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.
App Overview
HealthGlance - Complications
If app does not show on your Watch after purchase, please read troubleshooting steps at the end of this description.
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.6
26 ratings · Top 50%
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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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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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.
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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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for HealthGlance - Complications: map the core Health & Fitness 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
Expand metrics to include more health indicators and personalized insights.
Assumption to check: Limited health metrics displayed
Validate with people who use this workflow before building.
Hypothesis 2
Ensure reliable integration with HealthKit/Google Fit for real-time updates.
Assumption to check: Inconsistent syncing with health data
Validate with people who use this workflow before building.
Hypothesis 3
Introduce social challenges and sharing options for user engagement.
Assumption to check: Lack of social features
Validate with people who use this workflow before building.
Hypothesis 4
Simplify navigation with clearer pathways and user onboarding.
Assumption to check: Difficult navigation structure
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
If app does not show on your Watch after purchase, please read troubleshooting steps at the end of this description. Health Glance is a standalone Watch app that provides customisable health data complications, with support for multiple different complications. You can also view health data in the app, without using complications. - Support most data types from HealthKit (i.e. data that you can also see in the Health app on your iPhone) - Add multiple complication configurations, and set any of them as a complication, support for multiple different complications at the same time - Support for all watch faces and complication slots - Summary of all configured data when you open the app - Set goals, complications can show difference from goal, or percentage completed - Configure period for data. E.g. 7 day average Weight, Step Count from last 24 hours, Yesterday walking distance. All data types have many period types to choose from - Configure unit - Set custom icon, from a selection of more than 100 icons - Complication second line can show icon, unit, or can be hidden - Set colors, separately for value and icon (only for multicolor watch faces) - Option to hide unit - Complications update every 20 minutes, if it's not enough you can open the app any time to see the most up-to-date data - Standalone watch app means there is no iPhone app, you can configure everything on your watch Privacy: The application only stores data needed for your complications, and stores this data locally, on your watch. The app never connects to the internet or any 3rd party service. Troubleshooting: - Application doesn't show on Watch after purchase: Please go to the App Store on your Watch (not iPhone) and find the app here either by searching the name, or by going to Account (at the bottom), Purchased, and download the app from here. - Application/complication shows 0 for some data: a) There is no data in Health for that type and period. b) You didn't authorise HealthKit access on the first launch. On your iPhone go to Health app > Account > Privacy > Apps > Health Glance. c) New data added on your iPhone takes couple minutes to sync with your watch.
Written user reviews are not shown here. Check current App Store reviews >
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.
SUGGESTED BUILD STACK
React Native
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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.
