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
TrayMinder: Aligner Timer
Built by an orthodontist, TrayMinder® helps you stay on track with your clear aligners, like Invisalign®, ClearCorrect®, Angel Aligner®, and others, so you can get the best possible results from your treatment.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
5,209 ratings · Top 15%
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
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A product spec, screen plans, and build steps for your coding agent.
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Combine features and design from your favorite apps.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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/
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.
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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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for TrayMinder: Aligner Timer: map the core Medical 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
Implement a more user-friendly reminder setup process.
Assumption to check: Users report difficulty in setting up reminders accurately.
Validate with people who use this workflow before building.
Hypothesis 2
Focus on a cleaner, more organized UI layout.
Assumption to check: Some users find the interface cluttered.
Validate with people who use this workflow before building.
Hypothesis 3
Provide more flexibility in scheduling and reminders.
Assumption to check: Limited customization options for medication schedules.
Validate with people who use this workflow before building.
Hypothesis 4
Optimize the app for better performance on lower-end devices.
Assumption to check: Inconsistent performance on older devices.
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
Built by an orthodontist, TrayMinder® helps you stay on track with your clear aligners, like Invisalign®, ClearCorrect®, Angel Aligner®, and others, so you can get the best possible results from your treatment. Your treatment is an investment. Your wear time protects it. Staying consistent helps you stay on schedule and avoid unnecessary delays. TrayMinder® gives you the tools to stay on track every day. ⎯⎯⎯⎯⎯ TIMER • Start/pause timer to track daily aligner wear • Automatically adjusts for time zones and daylight saving — no mental math • Share wear data with your doctor via email or text • Set reminders to put your trays back in after meals CALENDAR • Get notified when it’s time to switch aligners • Add reminders for orthodontic appointments • Add daily notes (e.g., pain, rubber bands, etc.) • Visualize your progress with a color-coded calendar TEETHIE® (Teeth Selfie) • Snap a photo with each tray change to track progress • Import existing photos from your library • Scroll through and watch your smile transform • Create side-by-side comparison photos • Make time-lapse videos to visualize your full treatment journey TREATMENT & RETAINERS • Track your clear aligner treatment from start to finish • Start a refinement when your treatment plan changes • Continue using TrayMinder® with Retainer Mode after active treatment • Back up and restore your treatment data ⎯⎯⎯⎯⎯ TRAYMINDER FREE Everything you need to track your aligner wear. Supported by ads. TRAYMINDER+ The best TrayMinder experience. No ads. More tools. More ways to stay on track. TrayMinder+ includes: → No ads → Home Screen widgets → Siri voice commands & shortcuts → Unlimited Teethie photo storage → Live Activities on your Lock Screen and Dynamic Island → Apple Watch support to track wear time from your wrist → Calendar sync for aligner changes and appointments → Multi-device sync for your wear time, treatment plan, and photos Protect your smile investment and get the most out of your aligner treatment. ⎯⎯⎯⎯⎯ © 2026 TrayMinder LLC. All rights reserved. All product names, trademarks, and registered trademarks are the property of their respective owners. All company, product, and service names used in this app are for identification purposes only. End User License Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://trayminder.com/privacy
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
Expo
Zustand
@react-navigation/native
expo-notifications
@react-native-async-storage/async-storage
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.
