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
ESP32 BLE Terminal
INTRODUCTION:
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 2.3
3 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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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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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/
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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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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 ESP32 BLE Terminal: map the core Developer Tools 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
Ensure broad BLE compatibility with multiple ESP32 versions.
Assumption to check: Limited device compatibility
Validate with people who use this workflow before building.
Hypothesis 2
Implement a modern, user-friendly UI with clear navigation.
Assumption to check: Poor user interface design
Validate with people who use this workflow before building.
Hypothesis 3
Provide real-time feedback for sent commands and received messages.
Assumption to check: Lack of feedback on commands sent
Validate with people who use this workflow before building.
Hypothesis 4
Enhance connection stability with better error handling and reconnect features.
Assumption to check: Inconsistent connectivity
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
INTRODUCTION: - One-of-a-kind App that is used for scanning nearby BLE devices and also use for serial communication. - Control any Micro-controller that uses any BLE Module like ESP32 through your smart phone. -- This app can send and receive commands via BLE so you can debug your ESP32 based hardware problems easily. FEATURES: - Separate panels for sending and receiving data. - Custom your own buttons for frequent sending of same data. - Monitoring receiving data as ASCII or HEX. - Sending Data as ASCII or HEX. - Auto send commands at timed interval - Selection for \r \n at the end of sending data. - Send Log file of Received and Sent data. - Simple copy option in sent data just long press on data. - Keep Screen on/off option. - Remove Ads option. NOTE: - By default, Received data in ASCII format and It can be changed from top MENU. - By default, Data sent in ASCII format and It can be changed from long pressing of particular Button. - By default, \r\n will be sent on every sending data and It can be changeable from long pressing of particular Button.
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
React Navigation
Async Storage
Bluetooth API
Axios
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.
