MonSpark's free tier allows one user to run up to 5 monitors with basic uptime, ping, TCP, DNS, and text monitoring, one status page, one integration, and only 3 months of log retention. MonSpark's paid plans unlock significantly more monitors, additional users, longer log retention, and advanced monitor types such as SSL, screenshot, Lighthouse, domain expiration, and source code monitoring. G2 reviewers note that many desirable features, including SMS and voice call alerts, multi-location monitoring, and higher check intervals, are gated behind paid tiers. One G2 reviewer specifically mentioned that too many features require a package upgrade, making the free tier best suited for initial evaluation only.