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
Phone Buddy Phone Lost Alert
Macworld’s 2020 “Must-Have apps for your new Apple Watch” Phone Buddy Notifier is an Apple Watch app that alerts you when you lose bluetooth connection with your iPhone.
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.2
517 ratings · Top 30%
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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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 Phone Buddy Phone Lost Alert: map the core Productivity 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 robust notification system with real-time updates.
Assumption to check: Users often find the alert notifications unreliable.
Validate with people who use this workflow before building.
Hypothesis 2
Provide a guided onboarding process to familiarize users with the app.
Assumption to check: The app can be confusing to navigate for new users.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to customize alert sounds and notification types.
Assumption to check: Limited customization options for alerts.
Validate with people who use this workflow before building.
Hypothesis 4
Optimize the location tracking feature for faster response times.
Assumption to check: Occasional lag in locating the phone.
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
Macworld’s 2020 “Must-Have apps for your new Apple Watch” Phone Buddy Notifier is an Apple Watch app that alerts you when you lose bluetooth connection with your iPhone. “All we want is the ability to get alerts on our Apple Watch when we leave our iPhone behind.” -Macworld Step away from your iPhone and Phone Buddy notifies your Apple Watch the moment bluetooth connection is lost with your iPhone. It’s that easy. This app is for the forgetful ones! If you’ve ever forgotten your iPhone, Phone Buddy Lost Phone Alert is the answer. Don’t forget your iPhone again using Lost Phone Alert. Phone Buddy Alerts can be configured to display when your iPhone connection is lost, when you leave your Apple Watch behind, or when devices move apart with Distance Going Away Alerts! And for extra protection, you can enable the Lost Alert Loud Alarm to ensure you never miss a Lost Phone or Watch Left Behind notification. If someone takes your iPhone, Phone Buddy will alert you with a Lost Phone Alert right on your Apple Watch. Lost Phone Alert is better than phone insurance since it helps prevent a loss! Use Lost Phone Alert now and never lose your phone again! Misplacing your iPhone is a thing of the past, find your iPhone easily using your Apple Watch with Signal Strength Monitor and Play Ring. Misplace your Apple Watch? Phone Buddy has your back; you can trigger a sound to play on your watch from your iPhone using the Play Sound on Apple Watch feature and follow the sound to locate your watch. ========================== Phone Buddy is compatible with the following Bluetooth LE enabled Apple Watch models running WatchOS 6 or later: Apple Watch Series 2 - Series 9, Apple Watch SE, and Apple Watch Ultra - Ultra 2. Privacy Policy: https://phonebuddy.app Terms of Service: https://phonebuddy.app Jason Cross. “10 must-have apps for your new Apple Watch: Take your little wrist computer to the next level with these great apps.” Macworld (2020): Web (https://www.macworld.com/article/3328398/10-must-have-apps-for-your-new-apple-watch.html). NOV 25, 2020
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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.
