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
Disk Decipher
Access encrypted virtual disks on iPhone & iPad. Open VeraCrypt, TrueCrypt, LUKS, DMG, ProxyCrypt and more—securely, anywhere.
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.6
90 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.
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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 included18 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 Disk Decipher: map the core Utilities 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
Add more tools for disk management and file organization.
Assumption to check: Limited features compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Optimize scanning algorithm to improve performance.
Assumption to check: Can be slow on large disks
Validate with people who use this workflow before building.
Hypothesis 3
Implement iCloud sync for user settings and scan history.
Assumption to check: No cloud backup options
Validate with people who use this workflow before building.
Hypothesis 4
Clarify and simplify in-app purchase options for users.
Assumption to check: In-app purchase confusion
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
Access encrypted virtual disks on iPhone & iPad. Open VeraCrypt, TrueCrypt, LUKS, DMG, ProxyCrypt and more—securely, anywhere. Disk Decipher supports many advanced features. Full compatibility details and documentation are available on the support site: https://disk-decipher.app. Highlights: - Freedom of storage - Keep your disk images on your device, on an external disk or NAS, or in the cloud - Broad disk‑image compatibility – VeraCrypt, TrueCrypt, LUKS, DMG, Apple sparse image/bundle, ProxyCrypt - Native file‑system handling – FAT, exFAT, NTFS, HFS, APFS, Linux ext (*) - Rich viewer & media playback – Work securely with your files within the app, or use the File Provider integration across apps - Secure authentication options – Password, passcode, Touch ID, Face ID; Keyfiles, smart-card and FIDO2 security key. (*) exFAT and write support for HFS, APFS and NTFS are offered as optional in-app purchases to cover patent and licensing royalties.
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
Victory Native
React Navigation
Async Storage
Styled Components
BUILD KIT DIFFICULTY
Advanced
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.
