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
EZCalc Diamonds
Thanks For making EZcalc Diamonds The Best professional and popular Software for Diamond's Today .
$34.99 · In-app purchases
PRICE
$34.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 2.0
12 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 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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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 EZCalc Diamonds: map the core Business 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
Include more tools and features for advanced diamond analysis.
Assumption to check: Limited functionality may frustrate users looking for advanced calculations.
Validate with people who use this workflow before building.
Hypothesis 2
Enhance UI design for better user experience and engagement.
Assumption to check: User interface is not modern or visually appealing.
Validate with people who use this workflow before building.
Hypothesis 3
Implement a free trial or freemium model to attract more users.
Assumption to check: High price point for the app without trial options.
Validate with people who use this workflow before building.
Hypothesis 4
Prioritize bug fixes and improve reliability in calculations.
Assumption to check: User reviews indicate bugs in calculations.
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
Thanks For making EZcalc Diamonds The Best professional and popular Software for Diamond's Today . Chosen by thousands of user's. Top 5 Paid business Application !!! • EZcalc Diamonds is now on sale ! for a limited-time ! Your mobile diamonds business manager . •Diamonds Calculator... •Sales reports... •Search for a Diamond over RAPNET All in one amazing Platform... After experience of 17 years developing The Best Diamond Calculator Software's for All platforms with a thousand's of users. Whether you are a wholesaler or a jeweler or anything in between, this application will revolutionize the way you do business. ADIRsoft is Proud to Present EZcalc Diamonds. The Best Diamond software and a must software for anyone. • ABOUT EZCALC • Your diamond manager that goes with you every where... With EZcalc you can calculate the price of stones based on rapaport price list with a touch of a finger. EZcalc also makes it easy to save reports, send them by e-mail, analyzing the average asking price market, searching Diamond's on Rapnet , get up-to-date with the industry news and more! EZcalc has been the best selling software in the pocket PC world for the past 15 years and is now bringing this amazing tool to the iPhone. • FEATURES • √ One touch syncronization with the rapaport price list. √ Calculate the price of a stone according to its specification. √ Search for a Diamond on RAPNET with one click. √ Ability to know the real asking price using the analyse feature based on Rapnet. √ Ability to calculate the profitability using the recut stone feature. √ Comparing two different results of calculations using the m+ feature. √ Ability to save searches . √ Ability to save lists of stones and reports of sales and send them by e-mail. • Important notice ! • EZcalc Diamonds is not available with Rapaport lists or relevant data. To update price lists, user must hold a valid Rapaport User Name and Password. • analysing market price features required rapaport membership. VISIT US ON YouTube channel http://www.YouTube.com/user/adirsoft ---------------------------------------- Thank You for choosing ADIRsoft. ----------------------------------------
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 Query
React Native Paper
Async Storage
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.
