Comparison · AI testing agentsChecksum vs TesterArmy

Checksum's agent writes Playwright TypeScript into your repo and repairs it when the app changes. TesterArmy's agent runs the sentence you typed.

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[01] Facts

At a glance

Checksum lists tier sizes without prices at checksum.ai/product/pricing; the docs on generate-tests and auto-maintenance show what a delivered test looks like, and trust.checksum.ai holds the SOC 2 report.

TesterArmytester.army

Approach: AI agent with vision, no selectors
Writing a test: Plain-English steps, CLI, MCP, or dashboard
Native mobile: iOS simulators + Android emulators
Public pricing: Free tier, then $99/mo self-serve
Pull requests: GitHub App: run per PR, check + comment

Checksumchecksum.ai

Approach: Generated Playwright locators, two-layer auto-heal
Writing a test: Agent generates Playwright TS from code and sessions
Native mobile: Not documented, web only
Public pricing: No public price, tiers by workflows, 30-day trial
Pull requests: GitHub App or GitLab, runs in your CI on every PR

[02] Authoring

The same test, both ways

Checksum's version is the Playwright TypeScript it would open as a pull request, one locator per line. TesterArmy's version is the same checkout as sentences the agent reads on screen.

Checksum · guest-checkout.checksum.spec.ts

Show me the guest checkout test from the pull request Checksum opened

Read(checksum/tests/guest-checkout.checksum.spec.ts)

Read 35 lines

1 import { init } from '@checksum-ai/runtime';
2 
3 const { test, defineChecksumTest, expect } = init();
4 
5 const promoCheckout = defineChecksumTest(
6   'Guest checkout applies a promo code',
7   'gc7Kq',
8 );
9 
10 test(promoCheckout, async ({ page }) => {
11   await page.goto('/collections/new-arrivals');
12   await page.getByText('Trail Jacket').click();
13   await page.getByLabel('Size').selectOption('M');
14   await page.getByText('Add to bag').click();

… +21 lines

TesterArmy · the same test

Guest checkout applies a promo codePassedWeb1m 52s

Open the new arrivals collection and pick the Trail Jacket in size MAct

Add it to the bag and start checkout as a guestAct

Fill in a valid UK shipping addressAct

Apply the discount code "WELCOME10"Act

The order summary shows a discount lineAssert

Pay with the sandbox cardAct

The thank-you page shows an order numberAssert

See it on your own app

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[03] Differences

Where they differ

Checksum calls itself a testing buddy for your coding agent: it detects flows, generates Playwright, runs it in CI, and heals it. TesterArmy never produces the code.

Who writes the test

Checksum's agent reads your source and recorded user sessions, then opens a pull request with Playwright TypeScript. TesterArmy runs the steps you wrote yourself.

What stays in the repo

Checksum leaves .checksum.spec.ts files plus a story file, runnable wherever Playwright runs. TesterArmy stores plain-English JSON steps with no locators inside.

Native mobile coverage

Checksum's site and docs describe browser tests only. TesterArmy takes the same steps to iOS simulators and Android emulators, Flutter and Expo included.

How you buy

Checksum publishes three tiers sized by workflows maintained, no prices, and offers a 30-day trial or a demo. TesterArmy lists $99 and $299 plans.

[04] Comparison

Side by side

Checksum learns flows from real user sessions, delivers verified Playwright you own, heals it by pull request, and holds a SOC 2 Type 2 report. The table shows the trade.

DimensionTesterArmyChecksum

How you startTesterArmySign up, give the agent a URL or a build, then run.ChecksumConnect the repo, add the optional SDK, then take a 30-day trial or demo.
Who picks the flowsTesterArmyYou name each flow in plain English and the agent runs exactly that.ChecksumThe agent analyses your code and recorded sessions, then proposes flows and asks questions.Advantage
Elements and driftTesterArmyThe agent reads the rendered screen each run, so nothing gets healed.AdvantageChecksumPlaywright selectors, recovered live by the CLI or healed through a PR you merge.
Pull request testingTesterArmyThe GitHub App runs flows per PR and posts a check with video.ChecksumGitHub App or GitLab integration runs the suite in your CI on each PR.
Native mobileTesterArmyZipped .app on iOS simulators, .apk on Android emulators, same step format.AdvantageChecksumNothing about iOS or Android appears on the site or in the docs.
Agent and API surfacesTesterArmyCLI, hosted MCP server over OAuth, and a REST API with OpenAPI, every plan.ChecksumThe checksumai CLI, a hosted MCP server, and a REST API with API keys.
Human layerTesterArmyThe transcript and video stand alone; Enterprise adds SLA support over Slack Connect.ChecksumEngineers verify every delivered test and each tier includes a dedicated customer engineer.Advantage
PricingTesterArmyFree tier, then $99 a month for 250 runs or $299 for 1,000.AdvantageChecksumNo public price; Emerging, Scaling, and Enterprise tiers hold 50, 200, or 400+ workflows.

Facts checked September 2026. Spotted something out of date? Tell us and it gets fixed.

[05] What it costs

Pricing

Checksum charges by workflows maintained and publishes no figures, so the price arrives after a demo or trial. TesterArmy prints its two plans on the pricing page.

TesterArmy

$99/mo after a free tier

Free tier: sign up and run against your own app
Hobby $99/mo: up to 250 test runs included, web and mobile
Startup $299/mo: up to 1,000 test runs included, 10 concurrent test runs

Full pricing

Checksum

No public price, 30-day trial

Emerging covers 50 CI/CD-ready workflows with autonomous healing and a dedicated customer engineer
Scaling adds 200 workflows, style guides, parallel execution; Enterprise adds 400+ and an API testing agent
No per-seat or per-run fees; one workflow is a test of up to 30 actions

[06] Fit

Who should pick which

Decide whether you want a Playwright suite somebody else keeps green, or no suite at all.

Pick TesterArmy ifPick Checksum if

Pick TesterArmy ifYou would rather describe ten flows in plain English than review ten generated pull requests.Pick Checksum ifYou want flows discovered from real user sessions and source code instead of naming them.
Pick TesterArmy ifYour product ships to iOS or Android and the web tests should cover those builds too.Pick Checksum ifYour team wants standard Playwright in its own repo, verified by engineers, healed by PR.
Pick TesterArmy ifYou want a public price, a free tier, and no generated suite to review or merge.Pick Checksum ifYour buyers require a SOC 2 Type 2 report and a dedicated customer engineer.

Already on Checksum?

Each Checksum test ships with a .checksum.md story file that already reads as steps. One prompt turns those stories into act and assert steps your agent runs.

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[07] FAQ

Questions

Checksum's agent studies your code and user sessions, writes Playwright TypeScript, opens it as a pull request, and heals it when the app changes. TesterArmy runs plain-English steps by looking at the screen and returns a verdict with video.

For end-to-end web coverage it can take Checksum's place, and it adds iOS and Android builds that Checksum does not mention. You lose the generated Playwright suite and the engineers who verify it, and you gain a public price.

Checksum publishes tiers by workflows maintained, 50, 200, or 400+, with no numbers and a 30-day trial. TesterArmy prices Hobby at $99 for 250 monthly runs and Startup at $299 for 1,000, above a free tier.

Neither the marketing site nor the docs mention iOS or Android; everything runs as Playwright in a browser. TesterArmy takes those same sentences to a cloud iOS simulator or Android emulator, Flutter, Expo, and React Native included.

Checksum wins in three places. It finds flows from user sessions and source code, hands you Playwright verified by engineers plus a dedicated customer engineer, and its trust center lists a SOC 2 Type 2 report, which TesterArmy lacks.

It takes little work. Every generated test pairs with a .checksum.md story in plain steps, so your coding agent restates each story as act and assert steps and saves the login as a credential. Playwright files stay until coverage matches.