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.
Genius Fax is the easiest and affordable way to send and receive faxes with your iOS device.
Free · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Genius Fax - Faxing app: 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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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
Assumption to check: Limited document formats supported for upload.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Frequent prompts for subscription upgrades.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Occasional delays in fax delivery confirmation.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No ability to schedule faxes to be sent later.
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Genius Fax is the easiest and affordable way to send and receive faxes with your iOS device. No need to go to the dreaded fax store anymore. Faxing with Genius Fax is simple, fast and beautiful. Read below for pricing and subscription information. To send a fax: choose a file from your favorite cloud service (Dropbox, Google Drive, Box) or from any other iOS app (Genius Scan, Safari, Mail…) To receive a fax: subscribe for a number and you’re all set. You receive documents as PDF and can preview them or open them with any other app. **** Sending: - Tap the New fax button to open the fax' details screen - Enter your recipient's fax number - Scan your document with the Genius Fax built-in scanner or pick a document from the Files or the Photos app. - Alternatively, open a PDF or image file in any of your favorite apps and use their “Open with” feature to open the file with Genius Fax. - Optionally, add a title, sender, description, recipient details and enable the cover page. - Tap the Send button! - Each page costs a fax credit, the cover page is free. Receiving: - Subscribe to a number for 1, 3 or 6 months. - Give away your number to whoever needs to fax to you. - Add credits to receive faxes. One page costs one credit. - Faxes appear in your fax list as soon as they are received and paid for. Features: - Simple and beautiful UI. We don't understand why business apps should be ugly! - Pick a PDF or image file to send from another app or from the cloud. - Send a fax to select international fax numbers (see list of countries below). - Send and forget: be notified with push notifications when your recipient successfully received your fax, or if it failed to send. - Receive faxes. - Free cover page that includes the sender and recipient contact details, as well as a subject and a long description. - Conveniently buy credits and fax number subscriptions. - History of the faxes you sent available from any of your devices with Genius Fax (using your Genius Fax account). - Easily delete from history. Cost: - Each page of your PDF file costs a fax credit to send or to receive. - When sending, the cover page appended by Genius Fax is always free. - You can buy credits in Genius Fax. A fax credit starts at $0.99 but costs as little as $0.39 if purchased in bulk. - You can buy a number in Genius Fax for as little as $3.49/month. - Send your fax to any supported country. It's always one credit per page. International destinations supported: US, Canada, UK, Japan, France, Germany, Spain, Austria, Portugal, Italy, Belgium, Luxembourg, Switzerland, Netherlands, Cyprus, Norway, Sweden, Estonia, Latvia, Greece, Hungary, Romania, Iceland, Ireland, Malta, Morocco, Turkey, Saudi Arabia, South Africa, Israel, Kazakhstan, India, China, Hong Kong, Singapore, Malaysia, Taiwan, Thailand, Mexico, Argentina, Brazil, Puerto Rico, Costa Rica, Panama, New Zealand and Australia Genius Fax is fully compatible with Genius Scan. You can scan documents with Genius Scan and fax them with Genius Fax. Genius Fax supports documents up to 50 MB. Please share your feedback at [email protected] so that we can improve the app with the next iteration! Legal: - By using Genius Fax, you agree to the terms of use. - These terms are always available from the Genius Fax' settings menu. Terms of use: https://geniusfax.com/terms
Written user reviews are not shown here. Check current App Store reviews >
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.