10 Best Fax Apps for iPhone & Android in 2026

10 Best Fax Apps for iPhone & Android in 2026

The best fax apps in 2026 are Municorn Fax App (best overall), Fax.Plus (best cross-platform), eFax (best enterprise), iFax (best mobile UX), and Dropbox Fax (best light use). These mobile solutions let iOS and Android users securely scan, sign, send, and receive documents instantly without hardware.

Fax App Best For Supported Platforms HIPAA Compliant Starting Price
Municorn Fax App Overall Mobile Performance & Ease iOS, iPadOS, Android Yes (Pro plans) Free trial / Flexible sub
Fax.Plus Cross-Platform & Workflow Integration iOS, Android, Web, Email Yes (Enterprise) $8.99 / month
eFax High-Volume Enterprise Faxing iOS, Android, Web, Email Yes (eFax Protect) $18.95 / month
iFax iPhone Users & Document Scanning iOS, Android, Web, macOS Yes (Plus/Pro) $8.33 / month
Dropbox Fax Occasional Cloud Document Faxing Web, iOS, Android integrations No $9.99 / month
Documo (mFax) Strict Industry Compliance & Security iOS, Android, Web Yes (Native) $12.00 / month
FaxZero Free One-Off Web Faxing Web Browser No Free (5 faxes/day)
RingCentral Fax Unified Business Communications iOS, Android, Desktop Yes (Ultimate) $17.99 / month
MyFax International Online Faxing iOS, Android, Web No $12.00 / month
Genius Fax Pay-As-You-Go Credit System iOS, Android, Web No $0.99 / page (credits)

How We Ranked the Best Fax Apps

We evaluated more than 20 mobile fax services against seven criteria: scanning quality, delivery speed, encryption, HIPAA compliance, pricing transparency, cross-platform sync, and UI simplicity, cross-referencing real-user feedback for reliability and hidden fees.

1. Municorn Fax App – Best Overall Fax App

Municorn Fax App is the top-rated mobile faxing solution, combining an advanced document scanner, e-signature tools, high delivery speed, and 256-bit encryption in a clean interface. It turns your camera into a scanner with edge detection and perspective correction, ideal for professionals sending contracts or medical forms remotely.

  • Key Features: Auto-corrected scanning, integrated e-signatures, cloud syncing (Drive, Dropbox, iCloud, Box), real-time status tracking, custom cover pages.
  • Pricing: Free trial with flexible subscription plans thereafter.

Pro: Crisp image processing and a seamless mobile UI reduce transmission errors. Con: Dedicated inbound numbers require an active subscription.

Verdict: The complete package for anyone seeking the best fax apps for iphone or Android that handle scanning, signing, and tracking in one workflow.

2. Fax.Plus – Best for Cross-Platform Flexibility

Fax.Plus delivers a reliable cross-platform experience with enterprise-grade security, broad international support, and email integration. It provides unified account management with dedicated numbers from 40+ countries.

  • Key Features: Email-to-fax, iOS/Android apps plus web dashboard, Swiss-hosted 256-bit AES encryption with TLS 1.2+, Zapier automation.
  • Pricing: Starts at $8.99 per month.

Pro: Free tier sends up to 10 pages with no credit card. Con: HIPAA compliance is restricted to the Enterprise plan, and unused pages don't roll over.

Verdict: Ideal for users needing a versatile platform spanning browsers, mobile apps, and email.

3. eFax – Best for High-Volume Enterprise Faxing

eFax remains an industry heavyweight, offering reliable high-volume sending, cloud archiving, and regulatory compliance for enterprise teams, with instant access to corporate fax archives via its mobile app.

  • Key Features: Large file sharing up to 3 GB, unlimited lifetime cloud archiving, eFax Protect BAA-supported HIPAA tier, multi-user admin accounts.
  • Pricing: Starts at $18.95 per month.

Pro: Highly reliable enterprise-scale infrastructure with a searchable historical archive. Con: Monthly pricing is significantly higher than lighter mobile competitors.

Verdict: Worth the higher price for corporate and healthcare teams needing robust admin features and high transmission caps.

4. iFax – Best for HIPAA Compliance and iPhone Users

iFax offers an ultra-clean mobile interface with 256-bit SSL encryption, HIPAA compliance options, and OCR-based document editing designed for Apple hardware, syncing in real time across iPhone, iPad, Apple Watch, Android, and macOS.

  • Key Features: Integrated OCR text extraction, BAA execution on business tiers, cross-device sync, no-contract pay-as-you-go options.
  • Pricing: Starts at $8.33 per month, billed annually.

Pro: Outstanding iOS-optimized experience with built-in OCR. Con: Free trial has limited outbound page allocations, and international rates vary.

Verdict: A top pick for the best fax apps for iphone, pairing smooth design with strong compliance features.

5. Dropbox Fax – Best for Light Occasional Faxing

Formerly HelloFax, Dropbox Fax offers a streamlined web and cloud framework for users who occasionally transmit files stored in online drives, operating directly in the browser without heavy desktop software.

  • Key Features: Native integration with Dropbox, Google Drive, OneDrive, and Box; multi-recipient faxing; digital cover sheets; distraction-free dashboard.
  • Pricing: Starts at $9.99 per month.

Pro: Seamless for Dropbox-invested users, with no subscription needed for occasional faxes. Con: No standalone mobile app, and it lacks HIPAA compliance.

Verdict: Perfect for freelancers who infrequently send PDFs and want to skip traditional fax machinery.

6. Documo (mFax) – Best for Regulated Industries & Security

Documo (mFax) delivers industrial-strength security, granular access permissions, and guaranteed 99.99% uptime for legal, financial, and healthcare organizations, prioritizing security with full HIPAA, GLBA, and SOX compliance and continuous audit logging.

  • Key Features: HIPAA/HITECH/GLBA/PCI-DSS support, admin roles and department sub-accounts, developer API access, carrier-grade transmission lines.
  • Pricing: Starts at $12.00 per month.

Pro: Industry-leading security architecture with comprehensive audit logging and strong support SLAs. Con: Higher starting cost and a steeper learning curve.

Verdict: The premium choice for security-conscious medical practices, law firms, and financial organizations.

7. FaxZero – Best for Quick Free Web-Based Faxing

FaxZero is a long-standing web service for sending quick, occasional faxes online without registering an account or downloading an app, allowing up to five daily transmissions at zero cost.

  • Key Features: Free daily tier (5 faxes/day, 3 pages plus cover sheet), no account registration, $2.09 per fax for up to 25 pages ad-free, international support.
  • Pricing: Free, or $2.09 per fax for the ad-free option.

Pro: Completely free for small outbound documents on any browser. Con: Free version includes FaxZero branding and cannot receive inbound faxes.

Verdict: An excellent emergency option for sending a single document fast without subscribing.

8. RingCentral Fax – Best for All-in-One Business Communications

RingCentral Fax embeds enterprise cloud faxing within a comprehensive phone, SMS, and team messaging suite, letting users switch between VoIP calling, chat, video, and faxing from one dashboard.

  • Key Features: Unified workspace for calls/SMS/video/fax, intelligent spam blocking, Google Drive/Box/Dropbox/Office 365 integration, custom toll-free or local numbers.
  • Pricing: Starts at $17.99 per month.

Pro: Eliminates app fatigue with highly reliable delivery speeds. Con: Overkill for individual users, and entry-level plans cap monthly pages.

Verdict: Ideal for growing businesses wanting a unified communications tool combining voice, SMS, and faxing.

9. MyFax – Best for International Faxing

MyFax provides a cost-effective solution for sending and receiving documents globally across native iOS, Android, and web platforms, well suited for distributed teams and international departments.

  • Key Features: Local/toll-free/international number selection, multi-device sync, support for 17 file formats (DOCX, PDF, XLS, JPG, TIFF), email alerts.
  • Pricing: Starts at $12.00 per month.

Pro: Straightforward interface with broad file format support. Con: Lacks advanced automation APIs, and overage fees apply above monthly caps.

Verdict: A solid, budget-conscious option for professionals communicating across international borders.

10. Genius Fax – Best Pay-As-You-Go Mobile Option

Genius Fax, from the makers of Genius Scan, offers an affordable pay-as-you-go credit model for casual users who want to avoid monthly subscriptions, ideal for sporadic tasks like house sales or tax filings.

  • Key Features: Credits from $0.99/fax ($0.39/page in bulk), Genius Scan import, temporary or permanent number rental, real-time delivery tracking.
  • Pricing: $0.99 per page via credit packages.

Pro: No recurring fees and a clean, minimalist interface. Con: Lacks admin controls and HIPAA compliance; costs scale quickly with heavy use.

Verdict: The premier pay-as-you-go tool for casual users seeking a free-style fax app without subscription commitments.

Comprehensive Buyer's Guide: How to Choose a Mobile Fax App

Selecting the right app depends on your operational volume, regulatory obligations, device ecosystem, and workflow habits.

1. Regulatory Compliance (HIPAA, GDPR)

Medical, legal, or financial users need 256-bit encryption, secure cloud server locations, and signed BAAs. Municorn Fax App, Documo (mFax), and iFax all offer compliant plans for regulated data handling.

2. Device Compatibility & Camera Quality

If you handle physical paper, look for tools like Municorn Fax App that auto-detect edges, remove shadows, sharpen text, and optimize file size before sending, preventing illegible deliveries.

3. Flexible Pricing Models

  • Subscriptions: Best for 50–100+ pages/month (Municorn Fax App, Fax.Plus, eFax).
  • Pay-As-You-Go: Best for occasional users sending 1–5 pages/quarter (Genius Fax).
  • Free Web Alternatives: Best for emergency single documents where ads are acceptable (FaxZero).

FAQ

What is the best app to send fax for free?

FaxZero is best for quick web submissions, or Fax.Plus, which offers a free plan covering 10 total pages. Mobile users can also try Municorn Fax App's free trial to scan, sign, and deliver documents instantly.

Is eFax still free?

eFax no longer offers a permanent free plan, but provides a 7-day free trial to test sending and receiving. Once it expires, a paid monthly or annual subscription is required to maintain access.

Which is better, eFax or MyFax?

eFax suits high-volume enterprise operations needing large file transfers, lifetime storage, and HIPAA compliance. MyFax is more cost-effective and simpler, making it better for budget-conscious individuals and small businesses needing basic international sending.

Do faxing apps actually work?

Yes. Mobile fax apps convert digital files, such as PDFs, DOCX, or scanned images, into data streams that standard phone networks recognize. Destination machines print the transmission normally, while you receive digital delivery confirmations directly on your device.