App Overview

QR Laps icon

QR Laps

Ursin Tanner · Sports

Count how many laps each of your students has run and automatically calculate the total distance

$2.99 · In-app purchases

PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
3.2
13 ratings · Below Average

Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.

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What's included17 files

A product spec, phased build plan, differentiation notes, and screen references.

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.

Feature spec

Goal: Send a clear invoice after finishing a job.

  • Add a client, line items, a due date, and payment instructions.
  • Preview the total before exporting a PDF.
  • Keep an editable draft if export fails.

Screen plan

Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.

States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.

Differentiate and validate

Hypothesis: Contractors need faster repeat invoices more than more templates.

First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.

The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.

Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.

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> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for QR Laps: map the core Sports workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
            

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Opportunities

AI-GENERATED OPPORTUNITY HYPOTHESES

These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.

Hypothesis 1

Add more metrics and detailed analytics options.

Assumption to check: Limited features compared to competitors

Validate with people who use this workflow before building.

Hypothesis 2

Improve user interface and fix bugs.

Assumption to check: 3.2 rating indicates user dissatisfaction

Validate with people who use this workflow before building.

Hypothesis 3

Provide clear explanations of premium features.

Assumption to check: In-app purchases can be confusing

Validate with people who use this workflow before building.

Hypothesis 4

Integrate sharing features to enhance user engagement.

Assumption to check: No social sharing options

Validate with people who use this workflow before building.

App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

App Store description

Count how many laps each of your students has run and automatically calculate the total distance. Export the results. Everything happens without a single click and without entering a single name! The app counts how often a QR code is shown. The students have their QR code scanned after each round. Enter a lap length and the app automatically calculates the total distance run and creates a ranking list. This can be exported as a .csv file for further processing. INFO This app is based on the popular QR Counter and has been adapted to the wishes of sports teachers. The highlights are the automatic distance calculation, the prevention of cheating and the acoustic lap counter. HIGHLIGHTS -> NO CLICKS -> NO TYPING OF NAMES -> GET A RANKING -> SAVE AUTOMATICALLY Close the app and work on the same data the next day. All data is saved automatically. -> EXPORT -> MANUAL INTERVENTION Change the result by swiping right to add 1 point. Swipe left to remove 1 point. If there is a person without QR code, it is possible to manually add a counter. -> SELECT THE UNIT OF MEASUREMENT miles, yards, feets, kilometers -> AUDIO FEEDBACK The app calls the number of running laps after each scan. -> CHANGE CAMERA Choose between front or back camera. -> NO CHEATING POSSIBLE After each scan, the code is locked for 10 seconds. -> MISSING QR CODE? It's possible to add a counter manually. Just type in the name and click the add button. Tip for maximum performance: Use any smartphone for up to 12 students. This avoids traffic jams. -> CREATE MULTIPLE QR CODES ONLINE AT http://www.teaching-apps.com Simply type in all names/items at once and get multiple QR codes in a PDF, which you can then print and save. It couldn’t be any easier! Each QR code is embedded in a student ID card in a credit-card size. These cards can be used for different apps and uses.

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Screenshots

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Build scope

Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.

Define the first version

Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.

Set boundaries

Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.

Check the hard parts

Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.

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BUILD KIT DIFFICULTY
Intermediate

From the Build Kit assessment.

A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.