Android · No account needed

Pulse-check any API,
right from your pocket.

Import a Postman collection, run a real load test against it, and keep a glanceable green/red dashboard of the APIs you care about - without opening a laptop.

Everything a Postman collection needs to prove an API is healthy

Fathom Pulse turns a collection you already have into a real, device-aware load test - then keeps watching.

Import however you already have it

Paste the JSON, pick a file, share it straight from Drive/Slack/Mail, or drop in a .zip with the collection and its environment together.

A load test that knows your phone's limits

Fathom checks your device's CPU, RAM, and network before picking a safe concurrency - so a "Heavy" run never just crashes your phone instead of testing the target.

Real pre-request & test scripts

An embedded JavaScript engine runs your collection's actual scripts - HMAC signing, and chaining a login token into the next request, exactly like Postman does.

A dashboard you can actually glance at

Pin the flows you care about and see them green or red at a glance - even without unlocking your phone, via the home-screen widget.

It keeps watching after you close the app

Turn on auto-check and Fathom quietly re-runs a pinned flow on your own schedule, and taps you on the shoulder the moment one starts failing.

Your data never leaves your device

No account, and no backend of ours - test requests go straight from your phone to the target you configured. Collections, environments, and results all live in local storage on your device, plain and simple.

Your data isn't trapped on one phone

Two ways to move it - one automatic, one entirely up to you.

Automatic, via your Google account

Android's own Auto Backup is on for every install, no setup required. Reinstall Fathom, or set up a new phone signed into the same account, and your collections, environments, saved templates, dashboard pins, past run results, and settings (a configured Slack webhook included) come back on their own.

Manual, whenever you want a copy

Settings → Export data saves a plain file with your collections, environments, templates, dashboard pins, and settings - email it to yourself, keep it in Drive, hand it to a teammate. Import data merges it back in on any device; nothing existing is deleted, and past run results are left out on purpose so the file stays small and shareable.

Not just a load test - a pulse on what's live right now

Most of the time you don't want to hammer anything - you want to know it's still up. Fathom's Sanity Check runs your collection once, no load generated at all, and gives you a plain pass/fail read so a problem shows up before it turns into a page. When you do need to push it, the same collection becomes a real load test, sized to what your phone can safely generate.

A plain-language pass/fail verdict, with buttons to pin the flow, share the result, or send it to Slack
A verdict anyone on the team can read at a glance - pin it, share it, or push it to Slack.
A technical drill-down with p50/p95/p99 latency, throughput, and time-series charts
Full percentiles and time-series charts the moment you need the detail behind the verdict.
A passed Sanity Check result, showing every request in the collection came back OK with no load generated
A Sanity Check run - every request confirmed healthy, no load generated at all.
The Slack webhook integration dialog, letting you label a device and enable auto-alerts on failed checks
Wire up a Slack webhook once, and failures alert the whole team automatically.

Catch it before it pages you

Sanity Check runs every request once, on a schedule, with no load at all - just "still healthy" or "something broke," early enough to fix quietly.

Real load, sized to your phone

When you need an actual load test, Fathom checks your device's CPU, RAM, and network first and picks a concurrency it can safely sustain against the target.

A report you can actually send

Generate a polished PDF - verdict, charts, device specs, timestamps - and share it to any app: email, Slack, Drive, wherever it needs to land.

Straight into your team's Slack

Point Fathom at a Slack webhook and every run - or just the ones that fail - posts its verdict and metrics right into the channel your team already watches.

Free to pulse-check. Plus to load-test. Pro to stop thinking about it.

Three tiers, each for a different job - not one bucket with everything crammed in.

Free
$0
Forever - no trial, no card
  • Unlimited collection & environment imports
  • Light & Medium load presets
  • Business-friendly pass/fail verdict
  • Last 3 runs kept per collection
  • 1 pinned dashboard flow
  • Heavy preset & Advanced mode
  • Technical details & charts
  • PDF report export
  • Pre-request/test scripts
  • Periodic auto-check & widget
  • .zip bundle import
  • Slack alerts
  • Ad-free
Get it on Google Play
Plus
Monthly via Google Play
For an occasional, real load test
  • Everything in Free
  • Heavy preset - your device's real ceiling
  • Advanced mode - your own concurrency/duration
  • Full technical details & charts
  • Share a PDF report - charts, device specs, any app
  • Last 10 runs kept per collection
  • 3 pinned dashboard flows
  • Pre-request/test scripts
  • Periodic auto-check & widget
  • .zip bundle import
  • Slack alerts
  • Ad-free
Upgrade in the app
Pro
Monthly via Google Play
For running it unattended
  • Everything in Plus
  • Pre-request/test scripts (HMAC, chained tokens)
  • Periodic auto-check, failure alerts & widget
  • Up to 10 pinned dashboard flows
  • .zip bundle import
  • Slack alerts for your team
  • Ad-free
Upgrade in the app

Built for the person who gets paged at 2am

Not another cloud dashboard you have to remember to check - a pulse you glance at.

Import the collection you already have

A Postman v2.1 export, pasted, picked, or shared straight from wherever it already lives.

Run it once to see where it stands

Pick Light, Medium, or (Plus) Heavy - or dial in your own numbers in Advanced mode.

Pin it, and stop thinking about it

A pinned flow shows green or red on your Dashboard and home-screen widget - auto-check keeps it current.

Fathom Pulse only tests APIs you already own or are authorized to test. See the Terms of Service.