# CallerAPI Reviews **Vendor:** CallerAPI **Category:** [Phone Verification Software](https://www.g2.com/categories/phone-verification) **Average Rating:** 4.3/5.0 **Total Reviews:** 24 ## About CallerAPI CallerAPI is an enterprise spam call blocking and telecom fraud prevention API that helps carriers, CPaaS platforms, VoIP providers, and enterprises protect their networks, reduce fraud, and improve call trust — all through a single, scalable API With global coverage across 27 countries and more than 15,000 new spam numbers identified every day, CallerAPI delivers real-time intelligence that stops robocalls, spoofing, and scam attempts before they reach end users Known for its low-latency performance (average response ~0.5 seconds) and ability to handle millions of daily lookups, CallerAPI combines spam detection, carrier validation, and risk scoring into one unified solution. Its continuously updated fraud database refreshes every 5 minutes, ensuring businesses always operate with the most accurate and reliable data Trusted by telecom operators, VoIP providers, and fraud prevention teams worldwide, CallerAPI enables organizations to strengthen compliance, raise answer rates, and protect revenue streams. With flexible integration options, white-label support, and enterprise-grade scalability, it provides the foundation for a safer, more efficient global calling ecosystem CallerAPI is building the world’s leading spam call intelligence and blocking infrastructure — purpose-built for enterprises that demand reliability, speed, and accuracy at scale ## CallerAPI Pros & Cons **What users like:** - Users find CallerAPI **easy to use** , enabling quick implementation and effective spam and fraud detection. (9 reviews) - Users value the **seamless API integration** of CallerAPI, enhancing caller identification and reducing spam effectively. (7 reviews) - Users value the **real-time data** capabilities of CallerAPI for accurate caller identification and spam detection. (6 reviews) - Users appreciate the **easy integrations** of CallerAPI, enhancing automation and compatibility with their existing setups seamlessly. (5 reviews) - Users commend the **impressive speed and accuracy** of CallerAPI, facilitating easy phone number verification and call management. (5 reviews) - Users appreciate the **user-friendly interface** of CallerAPI, noting its clear documentation and seamless integration capabilities. (5 reviews) - Automation (3 reviews) - Easy Setup (3 reviews) - Features (3 reviews) - Helpful (3 reviews) **What users dislike:** - Users find CallerAPI **too expensive** for small business budgets, making it unaffordable for many. (4 reviews) - Users experience **slow performance** with call logs and analytics, particularly during peak hours, impacting usability. (4 reviews) - Users express concerns over **poor customer support** , highlighting slow response times and a need for improvement in service. (3 reviews) - Users express concerns about **billing issues** , particularly regarding unclear pricing structures and customer support responsiveness. (2 reviews) - Users find the **complex setup** of CallerAPI time-consuming and unclear, particularly for less common tools. (2 reviews) - Limited Customization (2 reviews) - Users feel the **pricing issues** of CallerAPI make it tough for small businesses to afford full features. (2 reviews) - API Limitations (1 reviews) - Data Management (1 reviews) - Integration Issues (1 reviews) ## CallerAPI Reviews ### 1. Great Experience with Caller API **Rating:** 4.5/5.0 stars **Reviewed by:** Kartik G. | React.js Developer, Information Technology and Services, Small-Business (50 or fewer emp.) **Reviewed Date:** March 10, 2025 **What do you like best about CallerAPI?** CallerAPI fit into our existing setup easily. As a React developer, I often worry about compatibility with other tools, but CallerAPI works well with both our front-end (React) and our backend server. **What do you dislike about CallerAPI?** Sometimes, when we check very uncommon or new phone numbers, CallerAPI doesn’t have much info on them **What problems is CallerAPI solving and how is that benefiting you?** when a new user signed up on our site, we wanted to check if the phone number they provided was real and to know if it might be associated with spam. CallerAPI solved this problem for us. By integrating CallerAPI, we can now instantly get information about any phone number. ### 2. Caller API Makes Phone Verification Super Simple **Rating:** 4.0/5.0 stars **Reviewed by:** Akshay V. | Senior Software Developer, Information Technology and Services, Enterprise (> 1000 emp.) **Reviewed Date:** March 15, 2025 **What do you like best about CallerAPI?** I love how easy it is to verify phone numbers. The API is fast, accurate, and doesn’t need a complex setup. Just a few lines of code, and it works perfectly **What do you dislike about CallerAPI?** Sometimes, the response time can be a bit slow during peak hours. Also, I wish they had more detailed error messages to debug issues faster. **What problems is CallerAPI solving and how is that benefiting you?** It saves a lot of time by providing a single API for multiple phone verification services. Instead of using different providers, everything is unified in one place. ### 3. Reliable and Easy-to-Use Caller Management Tool **Rating:** 4.5/5.0 stars **Reviewed by:** Prashant B. | Consultant, Information Technology and Services, Enterprise (> 1000 emp.) **Reviewed Date:** March 05, 2025 **What do you like best about CallerAPI?** CallerAPI helps our team manage calls smoothly. The interface is simple, and we can easily track call logs, record conversations, and analyze data. It saves a lot of time and improves our workflow. **What do you dislike about CallerAPI?** Sometimes, the call analytics take longer to load, especially during peak hours. Also, I wish there were more customization options for reports. **What problems is CallerAPI solving and how is that benefiting you?** CallerAPI has streamlined our call tracking process, saving us a lot of manual work. We can now automatically log, monitor, and analyze calls, which improves customer interactions and support efficiency. ### 4. Easy and Reliable Caller API for Business Needs **Rating:** 4.5/5.0 stars **Reviewed by:** Sushant S. | Associate Business Analyst, Enterprise (> 1000 emp.) **Reviewed Date:** March 07, 2025 **What do you like best about CallerAPI?** CallerAPI is very simple to use. It gives quick and clear call details, helping me track all important calls without any trouble. The setup is easy, and the reports are useful. **What do you dislike about CallerAPI?** Sometimes, the call logs take a little longer to update. Also, I wish there were more customization options in the reports. **What problems is CallerAPI solving and how is that benefiting you?** It helps me keep a record of all business calls, so I never miss any important details. It also helps my team analyze call patterns and improve customer interactions. ### 5. "Revolutionizing Caller Identification with Speed and Accuracy" **Rating:** 3.5/5.0 stars **Reviewed by:** insha b. | Proposal Specialist, Small-Business (50 or fewer emp.) **Reviewed Date:** December 18, 2024 **What do you like best about CallerAPI?** It's real-time caller identification with global coverage of 2.65 billion phone numbers. The fast response time of just 0.5 seconds and its ability to detect spam and fraud calls at scale make it incredibly efficient. Plus, the affordability (10x cheaper than competitors) and seamless integration options with CRMs and no-code tools are big highlights. **What do you dislike about CallerAPI?** What I dislike about CallerAPI is that it’s unclear how easy it is to set up with all tools, especially less common ones **What problems is CallerAPI solving and how is that benefiting you?** CallerAPI solves the problem of identifying unknown callers and blocking spam or fraud calls. This is a big help for corporate work because it ensures you only connect with real clients and avoid wasting time on spam. It also improves communication by giving trusted information about callers, which makes follow-ups and writing to clients much easier. ### 6. A Must-Have Tool for Developers Building Call Features **Rating:** 4.5/5.0 stars **Reviewed by:** Abhijeet R. | Full Stack Developer, Information Technology and Services, Small-Business (50 or fewer emp.) **Reviewed Date:** February 27, 2025 **What do you like best about CallerAPI?** The seamless integration with both frontend and backend systems saves me hours of coding, and the documentation is crystal clear. **What do you dislike about CallerAPI?** Advanced features like custom call routing require extra setup, which can feel time-consuming for complex projects. **What problems is CallerAPI solving and how is that benefiting you?** It handles caller authentication and spam detection automatically, letting me focus on core app features. ### 7. Reliable API for Managing Calls Efficiently **Rating:** 4.0/5.0 stars **Reviewed by:** Rahul D. | DevOps Engineer, Information Technology and Services, Mid-Market (51-1000 emp.) **Reviewed Date:** March 10, 2025 **What do you like best about CallerAPI?** CallerAPI makes it easy to automate call handling, logs everything properly, and integrates well with our DevOps workflows. **What do you dislike about CallerAPI?** Sometimes, API response time fluctuates during high traffic, but overall, it’s stable. **What problems is CallerAPI solving and how is that benefiting you?** It automates call handling and monitoring, reducing errors and making troubleshooting faster. ### 8. Simple Call Tracking & Great Analytics **Rating:** 4.5/5.0 stars **Reviewed by:** Vaishali V. | SEO SMO Executive, Information Technology and Services, Mid-Market (51-1000 emp.) **Reviewed Date:** March 08, 2025 **What do you like best about CallerAPI?** It helps me track calls in real-time and gives clear reports. **What do you dislike about CallerAPI?** Sometimes, call logs take a few seconds to update. **What problems is CallerAPI solving and how is that benefiting you?** I struggled to track call leads from ads. CallerAPI made it easy by showing call sources and details instantly. ### 9. Streamlined API Solution for Everyday Needs **Rating:** 4.5/5.0 stars **Reviewed by:** Sajith M. | Software Developer, Computer Software, Small-Business (50 or fewer emp.) **Reviewed Date:** December 20, 2024 **What do you like best about CallerAPI?** CallerAPI is extremely user-friendly, with clear documentation and seamless integration capabilities. The response times are fast, and the dashboard makes tracking API usage intuitive. **What do you dislike about CallerAPI?** There are occasional issues with customer support response times, and the pricing structure could be more transparent, especially for smaller businesses. **What problems is CallerAPI solving and how is that benefiting you?** CallerAPI has simplified API management by offering robust features like real-time monitoring and detailed logs. It helps reduce development time by providing prebuilt integrations and ensures scalability as our business grows. ### 10. Efficient and Reliable API for Call Management **Rating:** 5.0/5.0 stars **Reviewed by:** Manoj M. | Full Stack Developer, Small-Business (50 or fewer emp.) **Reviewed Date:** February 27, 2025 **What do you like best about CallerAPI?** It is very easy to integrate, and it's best for call tracking and management, and it simple to work with. **What do you dislike about CallerAPI?** some times facing delays in data updates. **What problems is CallerAPI solving and how is that benefiting you?** Its very easy method to verify number, reducing fraud and improving security. ### 11. Best tool to identify call **Rating:** 5.0/5.0 stars **Reviewed by:** SHAIK S. | System Admin, Enterprise (> 1000 emp.) **Reviewed Date:** April 28, 2025 **What do you like best about CallerAPI?** CallerAPI helps us to identify calls and helps us reduce spam calls. **What do you dislike about CallerAPI?** CallerAPI is very expensive for everyone to afford. **What problems is CallerAPI solving and how is that benefiting you?** CallerAPI helps in detecting spam phone calls. It reduce the phone calls from spam. ### 12. Efficient Caller Identification tool to identify phone numbers **Rating:** 5.0/5.0 stars **Reviewed by:** Panchal H. | Wordpress Developer, Mid-Market (51-1000 emp.) **Reviewed Date:** December 23, 2024 **What do you like best about CallerAPI?** Caller API makes it easier to identify phone numbers and validates services that provide trustworthy caller ID API. Furthermore, it gives users and developers real-time identification so they may provide accurate and legitimate phone number information to their applications. It has a global reach and can recognize callers from various sources. It also makes it easier to identify spam callers. **What do you dislike about CallerAPI?** While everything comes at some price, small business budgets could find it too expensive. **What problems is CallerAPI solving and how is that benefiting you?** Spam calls which are the biggest headach now a days. CallAPI solves this by filtering the spam calls. ### 13. Best tool to Identify and Block Fraud Calls **Rating:** 4.5/5.0 stars **Reviewed by:** Keerthanaa N. | Web Developer, Small-Business (50 or fewer emp.) **Reviewed Date:** December 11, 2024 **What do you like best about CallerAPI?** Easy to identify spam & fraud calls with real time tracking. **What do you dislike about CallerAPI?** The pricing may be bit high for small business budgets **What problems is CallerAPI solving and how is that benefiting you?** Provides accurate caller ID tracking and fraud detection for identifying spam ### 14. Caller API - Best app for phone number identification **Rating:** 4.5/5.0 stars **Reviewed by:** Ruchita A. | Quality assurance , Mid-Market (51-1000 emp.) **Reviewed Date:** September 26, 2024 **What do you like best about CallerAPI?** Caller API is useful for phone number identification and validates services that provide robust caller ID API. It also offers real time identification to developers and its users to improve their application with accurate and genuine phone number information. It has a global coverage with multiple sources to identify callers. It also helps us to detect spam callers. It is a GDPR compliance certified application. **What do you dislike about CallerAPI?** Nothing to dislike as it meets our business requirements. **What problems is CallerAPI solving and how is that benefiting you?** It helps us to identify callers information. Also let us know if the call is a spam call or not. Even helps to find caller information from multiple sources across global. ### 15. Best tool to identify phone numbers **Rating:** 5.0/5.0 stars **Reviewed by:** Sappa Jawahar T. | System administrator, Enterprise (> 1000 emp.) **Reviewed Date:** December 29, 2024 **What do you like best about CallerAPI?** CallerAPI is easy to use and it helps to detect spam calls .It is fast and accurate. It helps us to check the phone number . **What do you dislike about CallerAPI?** CallerAPI is very expensive to afford it. the customer support is not good. **What problems is CallerAPI solving and how is that benefiting you?** CallerAPI helps in detecting the phone number . It detect spam calls which save a lot of time. ### 16. Effortless Caller Validation **Rating:** 4.0/5.0 stars **Reviewed by:** Mahir N. | Software Enginner, Small-Business (50 or fewer emp.) **Reviewed Date:** December 19, 2024 **What do you like best about CallerAPI?** I like how fast and accurate it is. It’s easy to use and helps check phone numbers quickly and securely. **What do you dislike about CallerAPI?** It can get expensive for small businesses with limited usage. **What problems is CallerAPI solving and how is that benefiting you?** I was working on a project that required verifying phone numbers quickly and accurately. CallerAPI made it easy by providing real-time validation, saving time, and improving data quality. ### 17. Best tool from Spam detecting **Rating:** 5.0/5.0 stars **Reviewed by:** Sri Mani Kiran V. | System administrator, Enterprise (> 1000 emp.) **Reviewed Date:** December 29, 2024 **What do you like best about CallerAPI?** Caller API provied good features like fruad and spam calls detection and it's very easy to use and also helps in call tracking. **What do you dislike about CallerAPI?** To use all features caller API subscription plans are a bit expensive. **What problems is CallerAPI solving and how is that benefiting you?** Caller API helps in detecting spam and fraud calls. which saves me from any form of cyber crimes. ### 18. Great Experience **Rating:** 3.5/5.0 stars **Reviewed by:** Verified User in Information Technology and Services | Small-Business (50 or fewer emp.) **Reviewed Date:** February 20, 2025 **What do you like best about CallerAPI?** Helps identify callers, track calls, automate logs, improve customer service, and integrate with CRM & VoIP systems **What do you dislike about CallerAPI?** Privacy concerns, API costs, occasional inaccurate caller data, dependency on third-party providers, and spam detection limitations **What problems is CallerAPI solving and how is that benefiting you?** CallerAPI helps identify callers, track calls, and log interactions automatically. It saves time, reduces spam, improves customer service, and integrates with CRM systems. ### 19. ReviewCallerAPI **Rating:** 4.0/5.0 stars **Reviewed by:** Ramprasad V. | Tech Lead, Small-Business (50 or fewer emp.) **Reviewed Date:** December 11, 2024 **What do you like best about CallerAPI?** One of the standout fetautres is its comprehensive set of tools for managing calls,including real-time tracking and detailed reporting.The API's response time is impressive,ensuring smooth and reliable performance even under high triffic conditions. **What do you dislike about CallerAPI?** Customer Support needs to be improved and in terms of expanding integrtaions with third party systems . **What problems is CallerAPI solving and how is that benefiting you?** High performance ### 20. Easier Identify and validation of phone numbers at bulk using callerAPI **Rating:** 3.5/5.0 stars **Reviewed by:** Deepak R. | Cloud; DevOps Engineer , Small-Business (50 or fewer emp.) **Reviewed Date:** September 04, 2024 **What do you like best about CallerAPI?** We use upload things as .csv at bulk to validate with api **What do you dislike about CallerAPI?** Pricing is somewhat higher and the api has some latency **What problems is CallerAPI solving and how is that benefiting you?** Identify and verification of valid phone numbers ### 21. Ease of Implementation **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Computer Software | Mid-Market (51-1000 emp.) **Reviewed Date:** October 11, 2024 **What do you like best about CallerAPI?** its very easy to implemenation and can help identifying fraud callers or verify caller ids. **What do you dislike about CallerAPI?** there is nothing as such which I dislike **What problems is CallerAPI solving and how is that benefiting you?** Help me verify and identify caller using apis and validate data. ### 22. Verifying caller's Identity with callerAPI **Rating:** 4.0/5.0 stars **Reviewed by:** Aparna T. | Associate Consultant, Small-Business (50 or fewer emp.) **Reviewed Date:** September 11, 2024 **What do you like best about CallerAPI?** It offers real-time caller identification, allowing businesses and developers to enhance their applications with accurate and comprehensive phone number information. We can use it to upload things to .csv to validate an api in bulk process. **What do you dislike about CallerAPI?** Pricing rate is little higher. high Latency in api sometimes. **What problems is CallerAPI solving and how is that benefiting you?** We can easily identify and verify phone numbers. ### 23. User Friendly and Easy To Understand **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Biotechnology | Enterprise (> 1000 emp.) **Reviewed Date:** December 12, 2024 **What do you like best about CallerAPI?** Quick, less hands on time, accurate and user friendly. **What do you dislike about CallerAPI?** Hangs up occasionally, unavailable offline. **What problems is CallerAPI solving and how is that benefiting you?** Verification made easy, accurate and reduced the dependency on external sources of verification. ### 24. CallerAPI Good Experience **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Information Technology and Services | Mid-Market (51-1000 emp.) **Reviewed Date:** September 17, 2024 **What do you like best about CallerAPI?** Ease of use, flexibility, and technology works great for API connections to various platforms **What do you dislike about CallerAPI?** It can get glitchy at times. A few times we have had to re-start from the begining as nothing has saved. **What problems is CallerAPI solving and how is that benefiting you?** Creates connectors with various platforms for our tool - allows for automation - [View CallerAPI pricing details and edition comparison](https://www.g2.com/products/callerapi/reviews?section=pricing&secure%5Bexpires_at%5D=2026-05-13+15%3A32%3A38+-0500&secure%5Bsession_id%5D=176d0aa5-d919-4e83-9742-b517eb534e77&secure%5Btoken%5D=a081298e5eaf4c00c138d4fc30cf6cbfd784b0c97e27435d49460c150915558a&format=llm_user) ## CallerAPI Features **Functionality** - Diverse Extraction Points - Data Structuring - Consolidation - Data Cleaning - Cloud Extraction - Visualization **Integrations** - Integration Breadth - Data Processing - Ease Of Integration **Platform Basics - Phone Verification** - Accuracy - Call Screening - Scalability - Security Measures - Reliable Delivery - Customizable Workflows **Support** - Documentation - Professional Support - Community Support **Diverse Extraction Points** - Diverse Extraction Points **Additional Features - Phone Verification** - Integration Abilities - Compliance with Regulations - Reporting and Analytics **Agentic AI - Phone Verification** - Autonomous Task Execution ## Top CallerAPI Alternatives - [Plivo](https://www.g2.com/products/plivo/reviews) - 4.5/5.0 (742 reviews) - [Vonage Communications APIs](https://www.g2.com/products/vonage-communications-apis/reviews) - 4.2/5.0 (368 reviews) - [Fivetran](https://www.g2.com/products/fivetran/reviews) - 4.3/5.0 (776 reviews)