7 Best Free Faxing Apps in 2026 (Tested & Ranked)

The FAX App by Municorn is the best free faxing app for iOS and Android, offering an integrated document scanner, automatic border detection, and secure transmission directly from your mobile device. Free mobile fax services generally operate through daily page allowances, temporary numbers, or free trial periods.

Fax App / Service	Best For	Free Allowance / Trial Details	Platforms	Security Level
FAX App by Municorn	Overall Mobile Faxing & Scanning	Free trial with camera scanning & global delivery	iOS, Android	High (Encrypted Transmission)
Fax.Plus	Security & Corporate Compliance	10 free outgoing pages total (No card required)	Web, iOS, Android	Enterprise (TLS Encryption & HIPAA option)
FaxZero	No-Sign-up Quick Desktop Faxes	5 faxes per day (Max 3 pages per fax)	Web Browser	Standard SSL Encryption
eFax	High-Volume & Business Faxing	7-day full access free trial	Web, iOS, Android	Enterprise (256-bit Encryption & HIPAA option)
iFax	Cross-Platform & Desktop Sync	7-day free trial / Flexible credit top-ups	iOS, Android, Web, macOS, Windows	High (HIPAA Compliant)
FaxBurner	Temporary Inbound Fax Numbers	25 incoming / 5 outgoing free pages	iOS, Android, Web	Standard SSL Encryption
Dropbox Fax	Cloud Storage Integration	5 free outgoing pages total	Web Browser	Enterprise Cloud Security

How We Evaluated the Best Free Fax Apps

To determine the top mobile faxing applications, we analyzed performance across key criteria: free tier mechanics (page allowances, trial durations, payment requirements), mobile app UX, document scanning precision, transmission speed, end-to-end security, and customer feedback across Google Play and the Apple App Store. Our testing prioritized apps that let users scan physical documents with a smartphone camera, sign files digitally, and receive confirmation reports without heavy hardware or a landline connection.

1. FAX App by Municorn — Best Overall Free Faxing App

FAX App by Municorn is the top-rated mobile faxing app available, providing an all-in-one platform for scanning, editing, signing, and sending digital faxes from your smartphone or tablet. Developed by Municorn, it has over 1,000,000 downloads and a 4.3-star rating from more than 69,000 Google Play reviews, eliminating the need for physical fax equipment or landlines. Smart edge-detection technology instantly converts paper scans into sharp PDFs optimized for international fax transmission.

Key Features

Smart Document Scanner: Detects page boundaries, corrects perspective, and cleans up contrast using your phone camera.
Global Reach & Cloud Import: Sends to dozens of countries with delivery tracking, and pulls files from Google Drive or Dropbox.
In-App Signature & Live Support: Sign documents on-screen and get built-in chat support for delivery queries.

Pros & Cons

Pros: Responsive camera scanner; clean interface; instant delivery notifications; free trial with full access to scanning, cloud uploads, and mobile sending.
Cons: Unlimited long-term sending requires an active subscription after the initial evaluation.

2. Fax.Plus — Best for Security & Enterprise Compliance

Fax.Plus is the premier online fax service for individuals and corporations requiring strict data security, offering 10 free outgoing pages without entering credit card details. Operated by Alohi, it serves more than 5,000,000 users worldwide across web, iOS, and Android, emphasizing compliance with international privacy standards and cross-platform flexibility. Archived documents are protected with 256-bit AES encryption, and app ratings run 4.6/5 on the Apple App Store versus 3.0/5 on Google Play.

Key Features

Cross-Platform Sync: Send faxes via web, mobile apps, or email (Email-to-Fax).
Cover Page Customization: Pre-formatted templates for legal and professional delivery.
Number Porting: Commercial users can transfer existing fax numbers upon upgrading.

Pros & Cons

Pros: No card required for the 10 free pages; crisp rendering; comprehensive audit trails; HIPAA compliance option on paid plans.
Cons: No inbound fax number on the free tier; strict 10-page lifetime limit.

3. FaxZero — Best for Fast No-Registration Web Faxing

FaxZero is the leading web-based free fax utility for sending quick outbound documents to US and Canadian numbers without installing software or registering an account. Operating since 2006, users upload a file, enter recipient info, and confirm via email — up to five free faxes per day, each capped at three pages plus a cover page, over standard SSL encryption.

Key Features

Zero Registration: No account or credit card needed.
Daily Free Quota: Up to 5 free faxes every 24 hours to US/Canada numbers.
Email Tracking: Notification sent upon transmission success or failure.

Pros & Cons

Pros: Completely free daily usage with no sign-up; reliable for short documents.
Cons: FaxZero branding on the free cover page; capped at 3 pages; US/Canada destinations only on the free plan.

4. eFax — Best for High-Volume Business Workflows

eFax provides a robust corporate mobile faxing ecosystem for professionals needing large monthly volumes, high-resolution scanning, and legal e-signatures, accessible via a 7-day full-access free trial on iOS, Android, and web. As one of the pioneer brands in digital fax services, it turns smartphones into functional multi-page document processors for legal, medical, and financial industries. Users can send faxes from any email inbox and share large files up to 3GB, with TLS encryption and available HIPAA-compliant options.

Key Features

eFax Mobile App: Receive, edit, sign, and send faxes on mobile.
Digital Signatures & Email-to-Fax: Apply stored signatures instantly or fax straight from email.

Pros & Cons

Pros: Highly reliable transmission; advanced document management; large cloud storage vault.
Cons: Requires payment method at signup; ongoing pricing is higher than basic consumer tools.

5. iFax — Best for Multi-Device Desktop and Mobile Sync

iFax delivers a flexible mobile and desktop faxing experience with HIPAA compliance, custom cover pages, and support across iOS, Android, macOS, Windows, and web. It offers a 7-day free trial or flexible pay-per-fax credit top-ups, with 256-bit AES/SSL encryption.

Key Features

Universal Sync: Fax history, drafts, and contacts sync across mobile and desktop.
Scanner Enhancement: Auto-enhances photo quality and flattens paper warps.
No Ads Interface: Clean, advertisement-free workspace.

Pros & Cons

Pros: Excellent multi-platform support; crisp scanner engine; HIPAA-ready.
Cons: Continuous free sending requires a subscription or pay-as-you-go credits.

6. FaxBurner — Best for Temporary Disposable Inbound Numbers

FaxBurner offers a disposable fax number for users who need to receive incoming faxes on mobile without a permanent monthly line, available on iOS, Android, and web. The free toll-free number stays active for 24 hours, during which users can receive up to 25 inbound pages and send up to 5 outbound pages at no charge.

Key Features

Disposable 24-Hour Number: Reserve a free toll-free number with a tap.
Inbound Notifications & Signer: Incoming faxes convert to PDF automatically; sign and fax back directly.

Pros & Cons

Pros: Instant temporary inbound number; clean PDF conversion; straightforward signing.
Cons: Inbound number expires after 24 hours; limited total outbound quota on the free plan.

7. Dropbox Fax (Formerly HelloFax) — Best for Cloud Storage Users

Dropbox Fax integrates deeply with cloud storage, letting users fax stored documents directly from web repositories including Dropbox, Google Drive, OneDrive, and Box. The free tier gives a 5-page initial outbound sending credit, with enterprise-grade cloud security managed by Dropbox.

Key Features

Direct Cloud Pull & Signatures: Select cloud files without downloading, and add electronic signatures before transmission.
Clear Transmission Logs: Email confirmations with timestamps and page counts.

Pros & Cons

Pros: Direct cloud file access; clean browser UI; trustworthy cloud security baseline.
Cons: No dedicated native mobile app; free limit restricted to 5 outgoing pages total.

What to Look For in a Free Mobile Fax App

Selecting the ideal digital faxing app means matching features to your document requirements, security expectations, and hardware setup. Mobile apps have largely rendered physical fax machines obsolete, but free plan structures vary significantly from one provider to the next.

1. Free Tier Mechanics and Quotas

Services fall into three categories: daily or lifetime free quotas (FaxZero and Fax.Plus grant explicit page limits without subscription setup); free trial periods (FAX App by Municorn, eFax, and iFax grant full access to scanning and sending for 3–7 days); and temporary disposable numbers (FaxBurner provides 24-hour inbound numbers).

2. Document Scanning & Security

Look for automated border detection, auto-cropping, and contrast adjustment — FAX App by Municorn excels here. For sensitive contracts, affidavits, or medical records, check whether the app uses TLS or 256-bit AES encryption, and confirm HIPAA-compliant configurations if you work in healthcare.

3. Cloud Storage and Document Management

Modern workflows rely on cloud access. Ensure your chosen app connects directly to Google Drive, iCloud, or Dropbox so you can attach stored PDFs directly, apply on-screen signatures, and save incoming fax receipts back to your digital archive automatically.

FAQ

Can I fax from Gmail for free?

Yes. Several of the apps above support email-to-fax sending: Fax.Plus lets you send faxes directly from your email account, and eFax allows faxing from any standard email inbox. Simply attach your PDF and address it using the provider's fax-to-email format, using your free trial or free page allowance to cover the cost.

What is the best free faxing app overall?

FAX App by Municorn ranks first thanks to its built-in scanner, global delivery, and 4.3-star rating from over 69,000 reviews. For strict security and compliance needs, Fax.Plus is the strongest runner-up with its 10 free lifetime pages and no card requirement.

Do I need a physical fax machine to use these apps?

No. Every app on this list replaces the physical machine entirely — you scan documents with your phone camera or upload existing PDFs, and the service transmits them digitally to any standard fax number, with confirmation sent back to your app or email inbox.