For product managers
Tomorrow's user test runs on a working app.
trialtill, a five-step checkout test that records where each tester stops, was built from the sentence below. It is live at checkout-trial.instroc.app.
What it got with nothing to set up: sign-in with email or google · each person sees their own · a database · a live address.
Five more sentences to paste
Each builds a working app with the parts listed beside it. A part that needs a paid plan says which.
The request board
A feature request board: customers sign in, post an idea, vote once per idea, and we mark each idea planned or shipped.
- Sign-in and accounts · A database · Each person sees their own
- Sign-in and accounts
- A database
- Each person sees their own
The variant test
An onboarding flow in three versions: each tester gets one at random, and a table shows who finished and how long each version took.
- Sign-in and accounts · A database · Visits and sources
- Sign-in and accounts
- A database
- Visits and sources
The release notes
Release notes with numbered entries, an RSS feed, and an email to subscribers when a new entry goes up.
- A database · Emails from the app (Starter and up) · A live address
- A database
- Emails from the app (Starter and up)
- A live address
The follow-up survey
A five-question survey for our beta testers that reminds anyone who has not finished after two days.
- Sign-in and accounts · Scheduled jobs · Emails from the app (Starter and up)
- Sign-in and accounts
- Scheduled jobs
- Emails from the app (Starter and up)
The live board
A board for the office screen that reads a public data feed, refreshes every 30 seconds and marks what changed since the last refresh.
- A live address · Visits and sources
- A live address
- Visits and sources
Live now, built on Instroc
Real apps at real addresses. Open one and use it.

Next Tube
Live London Underground departures from open data, every platform counting down, built from one sentence.

Wavelength
Release notes as numbered episodes, with a working RSS feed.
Start from this template
Pilot
A console for a software product: revenue, members, projects and usage in one place.
Start from this template
Asked before starting
- Is the data from a test real?
- Yes. Every app has its own database from the first build, so each tester's answers, saved basket and last step are rows you can read, filter and export.
- How fast can I change it between sessions?
- Each change is built and published to the preview address in minutes. Click the element that is wrong and describe the fix, or ask for a plan first when the change is big. Every version is kept, so you can go back to the one a tester saw.
- What does a test cost?
- A first test can run on the Free plan. A team that edits together starts at Starter ($15/month). The plans: Free $0, 30 credits a month, $5 of hosting usage once; Hobby $6/month, 40 credits a month, $5 of hosting usage a month; Starter $15/month, 100 credits a month, $10 of hosting usage a month; Pro $40/month, 250 credits a month, $20 of hosting usage a month; Business $80/month, 500 credits a month, $25 of hosting usage a month. Building spends credits; a running app spends hosting usage, and each plan includes some.
- Can engineering take the code?
- Yes. Every app is real React and TypeScript, and you can read and download the source on every plan, Free included. From Hobby ($6/month) up you can also edit the code in the built-in editor.
- Can my designer and engineer edit it too?
- Yes, from Starter ($15/month). A workspace holds the apps, and you invite editors (Starter 5, Pro 25, Business 100) and as many viewers as you like, free. Builds in a workspace are paid from that workspace's credits, so the people you invite need no plan of their own.
- What about testers' data?
- Each app has its own database. A customer sees only their own records unless you decide otherwise, table by table. You can pick where an app's database lives, keep a workspace's new apps in Europe, and take a backup whenever you want. From Hobby ($6/month), a backup is also taken every day and the last 7 are kept.
Tomorrow's test, from one sentence.
After sign-up the sentence is waiting in your prompt box. Nothing is built until you press send. The Free plan needs no card.
