Best API Monitoring Tools in 2026
Updated
In short: UptimeRobot is ranked #1 of 27 as of 4 October 2026, ahead of Site24x7 API Monitoring and Dotcom-Monitor. The best-ranked option with a free plan is Site24x7 API Monitoring. The lowest first paid tier on this page is Sematext Synthetics at $2/mo.
For teams keeping tabs on API availability and responses, monitoring tools can differ in where and how often they check. Compare check frequency, response assertions, multi-region checks and monitor limits, along with whether private locations are available. Incident workflows can help you assess how each option handles failures; free plans and paid-from pricing offer cost context. Site24x7 API Monitoring leads the ranking, followed by UptimeRobot and ObserveOne API Monitoring. APIContext, Dotcom-Monitor and Postman are also among the early entries, alongside Uptara and Watchlog. Consider the monitoring locations and response checks you need, then compare the listed limits and incident workflow features.
27 API monitoring tools ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
Recognised 40% · Phone app 26% · Documented 20% · Free plan 14% of the score
- 1 UptimeRobot iPhone + Android RecognisedPhone appDocumentedFree plan 7.9$9/mo
- 2 Site24x7 API Monitoring iPhone + Android RecognisedPhone appDocumentedFree plan 7.8$109/mo Check frequency: 1 minResponse assertions: YesMulti-region checks: Yes
- 3 Dotcom-Monitor iPhone + Android RecognisedPhone appDocumentedFree plan 7.7$13.33/mo
- 4 Uptrends iPhone + Android RecognisedPhone appDocumentedFree plan 6.8$42/mo
- 5 APIContext No phone app RecognisedPhone appDocumentedFree plan 6.3$29/mo Check frequency: 5 minResponse assertions: YesMulti-region checks: Yes
- 6 Cisco ThousandEyes Android only RecognisedPhone appDocumentedFree plan 6.3
- 7 HostTracker No phone app RecognisedPhone appDocumentedFree plan 6.3$4.08/mo
- 8 ObserveOne API Monitoring No phone app RecognisedPhone appDocumentedFree plan 6.3$6/mo Check frequency: 1 minResponse assertions: YesMulti-region checks: Yes
- 9 Postman No phone app RecognisedPhone appDocumentedFree plan 6.3$9/mo
- 10 Uptara No phone app RecognisedPhone appDocumentedFree plan 6.3$15/mo Response assertions: YesMulti-region checks: Yes
- 11 Watchlog No phone app RecognisedPhone appDocumentedFree plan 6.3$4.99/mo Check frequency: 1 minResponse assertions: YesMulti-region checks: Yes
- 12 Tallwatch No phone app RecognisedPhone appDocumentedFree plan 6.2$11.99/mo
- 13 Runscope No phone app RecognisedPhone appDocumentedFree plan 5.8$79/mo Check frequency: 1 minResponse assertions: YesMulti-region checks: Yes
- 14 Apica Vanguard No phone app RecognisedPhone appDocumentedFree plan 5.7 Check frequency: 5 minResponse assertions: YesMulti-region checks: Yes
- 15 Oh Dear No phone app RecognisedPhone appDocumentedFree plan 5.6€15/mo
- 16 Sematext Synthetics No phone app RecognisedPhone appDocumentedFree plan 5.4$2/mo Check frequency: 1 minResponse assertions: YesMulti-region checks: Yes
- 17 Uptime.com No phone app RecognisedPhone appDocumentedFree plan 5.4$9/mo
- 18 Sentinel No phone app RecognisedPhone appDocumentedFree plan 5.3 Response assertions: YesMulti-region checks: Yes
- 19 Signalog No phone app RecognisedPhone appDocumentedFree plan 5.3 Response assertions: YesMulti-region checks: Yes
- 20 Status Inspector No phone app RecognisedPhone appDocumentedFree plan 5.3 Check frequency: 1 minResponse assertions: YesMulti-region checks: Yes
- 21 Sysmos No phone app RecognisedPhone appDocumentedFree plan 5.3 Response assertions: YesMulti-region checks: Yes
- 22 CyberPing No phone app RecognisedPhone appDocumentedFree plan 5.2 Response assertions: YesMulti-region checks: Yes
- 23 Checkly No phone app RecognisedPhone appDocumentedFree plan 5.1
- 24 Loadster Synthetic Monitoring No phone app RecognisedPhone appDocumentedFree plan 5.1 Check frequency: 1 minResponse assertions: YesMulti-region checks: Yes
- 25 PageLantern No phone app RecognisedPhone appDocumentedFree plan 5.1
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which API monitoring tool is ranked first on Samsung Mobile US Press?
UptimeRobot is ranked #1 of 27 with a score of 7.9. Site24x7 API Monitoring is second and Dotcom-Monitor third.
How many of these have a free plan?
10 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Sematext Synthetics has the lowest first paid tier we found: $2/mo.
How is this list ranked?
Ranked mobile-first: a phone app alongside the web or desktop product, a free tier and the depth of its documentation. Paid placements never change a rank.