App Overview

FAX from iPhone - Send Doc icon

FAX from iPhone - Send Doc

OCTAGONLAB · Business

Fax App turns your iPhone and iPad into a complete fax machine: scan, sign, and send faxes to any number worldwide — and get your own fax number to receive them right in the app

Free

PRICE
Free
No in-app purchases
BUSINESS MODEL
Free
No overall Grossing estimate available
RATING
★ 4.6
5,577 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.

First kit free with a verified email

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Combine features and design from your favorite apps.

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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/
Preview a sample Build Kit No email needed

Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.

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.

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

> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for FAX from iPhone - Send Doc: 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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App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

Screenshots

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App Store description

Fax App turns your iPhone and iPad into a complete fax machine: scan, sign, and send faxes to any number worldwide — and get your own fax number to receive them right in the app. No fax machine, no landline, no account setup. SEND A FAX IN A MINUTE • Scan paper documents with the built-in camera scanner • Attach files: PDF, Word, Excel, PowerPoint, Pages, Numbers, Keynote, JPG, PNG, TIFF, HEIC, TXT, RTF, CSV • Add pages from Photos and Files, or share documents straight from Mail, Google Drive, Dropbox, and other apps • Pick recipients from your contacts — country codes are handled for you PREPARE DOCUMENTS LIKE A PRO • Sign with your finger right on the page — no printing, no rescanning • Draw and add text anywhere on the document • Reorder or remove pages before sending • Add a cover page with sender info, callback number, a note, and marks like Urgent or Confidential GET YOUR OWN FAX NUMBER • Pick a local number from hundreds of US & Canada options • Incoming faxes land right in the app — read, forward, or share them anywhere • Instant notifications the moment a fax arrives KNOW YOUR FAX ARRIVED • Live status for every fax: queued, sending, delivered • PDF delivery receipt with a confirmation code — real proof of delivery • Clear failure reasons (busy line, no answer) with one-tap retry STAY ORGANIZED • Complete history of sent and received faxes, with search • Drafts save automatically and sync, so you can start on iPhone and finish on iPad • Resend or forward any fax in two taps Whether it's a contract, a medical form, a tax document, or a lease — Fax App gets it there and gives you the receipt to prove it. Sending faxes and personal fax numbers require a Fax PRO subscription. --------------------------------- Subscription information: Payment is charged to your Apple Account when you confirm the purchase. Subscriptions renew automatically unless auto-renewal is turned off at least 24 hours before the end of the current period. The renewal price depends on the selected plan. You can manage subscriptions and turn off auto-renewal in your account settings at any time. Privacy Policy: https://doc.faxapp.store/legal/privacy-policy Terms of Use: https://doc.faxapp.store/legal/terms-and-conditions Questions? We're happy to help: [email protected] * iPhone and iPad are trademarks of Apple Inc.

Written user reviews are not shown here. Check current App Store reviews >

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 support for more file types like images and PDFs.

Assumption to check: Limited document formats supported for faxing

Validate with people who use this workflow before building.

Hypothesis 2

Implement a more robust error handling and retry mechanism.

Assumption to check: Occasional upload errors

Validate with people who use this workflow before building.

Hypothesis 3

Show progress indicators and notifications for status updates.

Assumption to check: Lack of user feedback during fax sending process

Validate with people who use this workflow before building.

Hypothesis 4

Allow users to schedule faxes for future dates.

Assumption to check: No option for scheduled faxes

Validate with people who use this workflow before building.

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
Supabase
react-navigation
expo-document-picker
Zustand
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.