Your app works on your laptop. Do not discover breakage on the client call.
The spinner never resolves. The screen goes empty. An error gets swallowed and Sentry stays quiet. Leaptr finds those breaks in a real session and hands you a graded report you can paste into Cursor before the next meeting.
No card required. One script tag. For Lovable, Bolt, and Cursor builders with a demo this week. Pre-client audit
Other tools answer different questions.
PostHog shows what users did. Sentry shows what threw. Leaptr shows what silently failed before your client sees it, and what to change next.
What did users click, scroll, and drop off on?
What exception was thrown, and where?
What silently broke with no exception, and how do I fix it before the call?
You lose sight the moment a paying client arrives.
It works on your laptop: fast wifi, fresh data, a short session. On the demo, none of that holds. The failures stay silent. Existing tools do not close that gap.
It is no longer one user. Many people hit the app at once. Race conditions and duplicate submissions show up that solo testing never can.
Slow is not forgiven. A client will not wait through a hang. They refresh, get nothing, and leave, often without saying why.
Failures are silent. Spinners that never resolve. Empty screens. Swallowed errors. You never see them on your machine.
Tests catch what you predict. Clients do not.
Synthetic suites run in sandboxes with clean data. Real clients hit edge cases under conditions you cannot stage on a laptop.
| Synthetic tests | Leaptr (real sessions) | |
|---|---|---|
| Environment | Sandbox, clean data | Production, real data |
| Network | Simulated or fast | Actual mobile networks |
| User behavior | Pre-scripted paths | Unpredictable real flows |
| Duration | Seconds per test | Hours of real sessions |
| Catches | Regressions you anticipate | Silent failures you never knew existed |
What your client would hit, and what to fix before the meeting.
Not more charts. Not hundreds of replays to scrub by hand. A clear diagnosis with a path to the fix.
Silent failures named
Spinner never resolves. Empty 200. Swallowed error with no UI change. Dead click that never fires a request.
Graded report
A to F grade for the session. Prioritized findings. Evidence tied to the route your client would hit.
Agent fix before the call
Every report ends with a prioritized prompt you paste into Cursor or Claude Code and ship before the next demo.
How it works: Leaptr correlates loading state, network outcome, and whether the screen settles. No request or response bodies. Emails, tokens, and keys are redacted before data leaves the browser.
From snippet to fix prompt before the next call.
Self-serve. No sales call. From account to graded report in one sitting.
Create a free account
Sign up at /app. Free to start. No card.
Create a project
Get a copy-paste snippet with your ingest key.
Install the collector
One script tag. Works in Lovable, Bolt, and Cursor-built apps.
Use the app for about 15 seconds
A real session streams in. Or run a synthetic test if traffic is not live yet.
Open report, copy fix
A to F grade, prioritized findings, and an agent-ready prompt. Re-run after you ship.
Install in under two minutes.
Sign up, create a project, and drop the collector into your authenticated app. Use your host and ingest key from the dashboard.
<script src="https://YOUR-HOST/collector.js"
data-endpoint="https://YOUR-HOST/api/ingest"
data-key="YOUR_INGEST_KEY"
data-domain="app.example.com"></script>Self-hosting? Set YOUR-HOST to your Leaptr origin (e.g. ).
No live traffic yet?
Run a headless synthetic test from the API. Leaptr logs in, navigates, and returns a graded report.
POST /api/test
Authorization: Bearer <token>
{ "url": "https://app.example.com/dashboard",
"auth": { "username": "u", "password": "p" } }Real difference: Synthetic tests help you validate fixes. Real user sessions reveal problems you did not know existed. See the test gap
Full agent loop in API and agents
Built for builders with a demo this week, not dashboard analysts.
| Analytics tools | Session replay | Leaptr | |
|---|---|---|---|
| Question they answer | "What did users do?" | "What did one user do?" | "What silently broke, and how do I fix it before the call?" |
| Posture | Analyst | Watcher | Pre-client audit |
| Who it's for | Teams with analysts | Teams with time to watch replays | Founders and agencies shipping client apps |
| What you do with output | Read charts, guess | Watch recordings, guess | Paste fix into your agent and ship |
Why not build it from scratch?
You could wire Playwright, ingest pipelines, silent-failure rules, and agent prompts yourself. Here is what that actually costs.
| Build yourself | Leaptr | |
|---|---|---|
| Time to first audit | Months wiring infra, auth, storage | Minutes with one snippet |
| Silent failure detection | Custom rules per failure type | Named silent failures shipped |
| Reports and agent output | Hand-rolled grading and prompts | A to F report + agent fix prompt |
| Ongoing maintenance | Browser APIs, collectors, analyzers | Maintained as a product |
Spend your time on the product your client will see, not rebuilding another monitoring stack.
Start free. Upgrade when the report is saving demos.
Every plan includes graded reports and silent failure detection. Free shows your top 3 findings so you can prove Leaptr catches what tests missed. Pro adds the full report and agent fix prompts for every handoff.
- 1 project
- 50 sessions / month
- Top 3 findings (see if tests missed them)
- 10 projects
- 2,000 sessions / month
- Full reports + agent prompts
- Unlimited projects
- 20,000 sessions / month
- Everything in Pro
Integrate and deploy without a sales call.
Quick reference, API details, agent workflows, and deployment guides.
Quick start
Sign up, create a project, install the collector, and open your first report.
Read guide →API and agents
Auth, synthetic tests, report endpoints, and the agent fix loop.
Read guide →Deploy
Docker compose, environment variables, CSP notes, and production checklist.
Read guide →Privacy
Two-layer PII redaction, what we collect, and what we never store.
Read guide →My app works for me. I have no idea what it will do on the client call. I only find out when they freeze or leave.
No card to start. Cancel anytime on paid plans. Free audit before your next meeting.
- Never collects request or response bodies
- Redacts emails, tokens, and API keys client-side
- Server re-applies redaction as a backstop
- Built for founders with a demo this week
Walk into the next demo without discovering breakage live.
One script tag. Graded report. Fix prompt for your coding agent. No card required.
Start free audit