App Overview

Speedometer and G-Force icon

Speedometer and G-Force

Alexander Ross · Navigation

See your speed

$4.99 · In-app purchases

PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
1.0
2 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.

Build your own version

Build Kit

Make this idea yours

A product spec, screen plans, and build steps for your coding agent.

First kit free with a verified email

Add to a Remix

Combine features and design from your favorite apps.

Kit ready. Verify your email to download it.

What's included16 files

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

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
Preview a sample Build Kit No email needed

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.

JavaScript is required to complete mailbox verification.

Free quick prompt For a smaller starting point

Quick prompt

> SELECT BUILD PLATFORM:

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

// RORK SYSTEM PROMPT
Rork plan preview for Speedometer and G-Force: map the core Navigation workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
            

Preview ready. Verify your email to reveal and copy the full prompt.

JavaScript is required to complete mailbox verification. Return to this prompt preview.

Continue in Rork copies the full prompt to your clipboard first, then opens Rork in a new tab.

Continue in Rork >

Affiliate link: CloneChart may earn a commission at no extra cost

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

Implement real-time GPS tracking for precision.

Assumption to check: Inaccurate speed readings

Validate with people who use this workflow before building.

Hypothesis 2

Enhance with customizable themes and layouts.

Assumption to check: Limited user interface options

Validate with people who use this workflow before building.

Hypothesis 3

Allow offline data storage and retrieval.

Assumption to check: Lack of offline functionality

Validate with people who use this workflow before building.

Hypothesis 4

Integrate a feedback system for user issues.

Assumption to check: Poor customer support

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

See your speed. Make it yours. Speedometer puts your current GPS speed front and centre with large digits and a clean display. Use it on iPhone or iPad, or check your speed from your wrist with the standalone Apple Watch app. YOUR SPEED AT A GLANCE • Choose km/h, mph, knots or m/s. • See GPS status when the signal is weak or unavailable. • Use the iPhone and iPad display in portrait or landscape. A DISPLAY THAT FITS YOU On iPhone and iPad, choose from five colour themes and four digit styles. Follow your device’s light or dark appearance, or keep the app always light or always dark. YOUR SPEED ON YOUR WINDSHIELD HUD mode mirrors the display so its reflection in your windshield reads the right way round. Place your device securely on the dashboard with the screen facing the glass, keeping your view clear. Reflection visibility depends on the windshield, screen brightness and ambient light. Set it up while parked. EXPLORE MOTION On iPhone and iPad, view current and peak G-force alongside roll, pitch and yaw. Measure overall acceleration or an individual device axis. Reset the peak and orientation reference, or turn the motion panel off for a simpler speed display. Motion features require an available device motion sensor. SPEED ON YOUR WRIST The Apple Watch app measures speed independently of your iPhone. Choose your unit on the watch and glance at your speed while walking, running, cycling or boating. GET STARTED YOUR WAY An interactive introduction helps you explore the controls and personalise the display. You can revisit it from Settings. On iPhone and iPad, add a Siri shortcut for your current speed. Speed measurement requires location access and a usable GPS signal. Keep your attention on your surroundings and adjust the app only when it is safe to do so.

Written user reviews are not shown here. Check current App Store reviews >

Screenshots

< Scroll to see more >

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.

SUGGESTED BUILD STACK
React Native
Expo
react-native-chart-kit
react-native-async-storage
expo-location
@react-navigation/native
BUILD KIT DIFFICULTY
Starter

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.