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
Mircules DX Cluster
Find out which interesting DX HAM Radio Amateur operators are “on the air” on the amateur radio bands!
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.0
1 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.
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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 Mircules DX Cluster: 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
Integrate multiple data sources for more comprehensive tracking.
Assumption to check: Limited data sources for DX spots
Validate with people who use this workflow before building.
Hypothesis 2
Simplify navigation and provide onboarding tutorials.
Assumption to check: User interface may be confusing for new users
Validate with people who use this workflow before building.
Hypothesis 3
Clearly indicate features behind paywall and offer a free trial.
Assumption to check: In-app purchases may not be clearly communicated
Validate with people who use this workflow before building.
Hypothesis 4
Implement filtering by distance, frequency ranges, and modes.
Assumption to check: Lack of advanced filtering options
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
Find out which interesting DX HAM Radio Amateur operators are “on the air” on the amateur radio bands! Mircules DX Cluster is an iPhone and iPad app that shows the info found on the international DX Cluster. This cluster is widely used by radio amateurs and SWL enthusiasts to find the DX "treasures" on the bands. You can use one of the two web clusters we provide or choose a DXSpider (telnet) server from our list. You can also manually add your own DXSpider server address. This functionality is still a work in progress so let us know what you think and how we can improve it! ALL POPULAR AMATEUR BANDS ARE INCLUDED - MF / HF bands (10m, 12m, 15m, 17m, 20m, 30m, 40m, 60m, 80m, 160m) - VHF / UHF bands (70cm, 1.25m, 2m, 4m, 6m) SEE THE DX SPOTS IN A CLEAR LIST Mircules DX Cluster shows the last 50 DX spots on the selected band in a clear list. ALL THE INFO YOU NEED! Information that is shown per spot item in the main list is: - callsign of the spotted Radio Amateur - country of the spotted Radio Amateur - frequency where the person can be found - time and date of the spotting - any comments added to the spot by the spotter - CQ Zone, ITU Zone and DXCC info of both Radio Amateurs - callsign and other info of the person that did the spotting - QRZ.COM information of both Radio Amateurs - a map of the country / entity of both Radio Amateurs TOOLS AND INFO A list of HAM radio tools are available, like: - Azimuth calculator - Contest calendar - Grid calculator - ITU prefixes - Q-Codes - UTC clock etc...
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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.
SUGGESTED BUILD STACK
React Native
Expo
Axios
React Navigation
TypeScript
Redux
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.
