By David Thompson · Published November 15, 2024 · Updated June 8, 2026 · 11 min read
Quick answer: The best fax app for iPhone is mFax — 4.8 stars, over 5 million users, no hidden fees, and you can send your first fax in under two minutes.
The App Store is flooded with fax apps. Most of them share one trait: they look free until you tap "Send" and discover a $9.99-per-week subscription buried in the fine print.
We downloaded and tested every major fax app for iPhone, sent real faxes, checked delivery receipts, and read the actual subscription terms. This guide covers the 7 best iPhone fax apps in 2026 — what they cost, who they're for, and which ones to avoid.
If you want to fax from your iPhone without wasting time on apps that won't deliver, start here.
The Weekly Subscription Trap
Many low-rated fax apps advertise as "free" but charge $5.99–$9.99 per week — that's up to $520/year to send occasional faxes. Always check the full subscription price in the App Store before you enable Face ID or Touch ID on any in-app purchase.
Quick Comparison: Top 7 iPhone Fax Apps
| App | Best For | Starting Price | Free Option | HIPAA |
|---|---|---|---|---|
| mFax | Mobile-first, general use | Pay-per-fax or from $9/mo | Pay-per-fax (no subscription needed) | Standard |
| eFax | Enterprise & corporate users | $18.99/mo | No | Yes (add-on) |
| Fax.Plus | HIPAA compliance | Free / from $7.99/mo | 100 pages/mo free | Yes (paid plans) |
| iFax | Polished mobile UI | From $14.99/mo | No | Yes (paid plans) |
| FaxBurner | Occasional / free use | Free / from $12.99/mo | 5 send + 25 receive/mo | No |
| Genius Fax | Pay-per-use flexibility | Credits or $3.49/mo | Trial credits | No |
| Municorn Fax | Unlimited faxing | From ~$3.99/mo | Trial available | No |
What is the best free fax app for iPhone?
The best free fax app for iPhone is FaxBurner, which gives you 5 send pages and 25 receive pages per month with no credit card required. The catch: its free fax number expires after 24 hours. For more free pages, Fax.Plus offers an ongoing free plan with 100 pages per month.
In-Depth Reviews
1. mFax — Best Overall
mFax is the top-ranked fax app for iPhone in 2026 — and for good reason. Over 5 million users have used it to send more than 2 million faxes, with a 98% delivery success rate backed by real confirmation receipts.
The experience is built around speed: open the app, upload a PDF or snap a photo of your document, enter the fax number, and send. Most users are done in under two minutes. The built-in scanner uses edge-detection to clean up photos so they look like properly scanned documents, not blurry phone shots.
Pricing is straightforward. You can send faxes on a pay-per-fax basis — no subscription required for occasional use — or upgrade to a monthly plan for regular faxing. For business teams, mFax Business adds HIPAA-ready features, team accounts, virtual fax numbers, and a web dashboard starting at about $9/mo (billed annually). Rather than rigid fixed tiers, you build your own plan — pick the exact seats and pages you need with a live calculator and pay only for what you use.
What sets mFax apart from the competition is what it doesn't do: no hidden weekly charges, no locked feature tiers designed to force upgrades, no dark-pattern billing. The price you see is the price you pay.
Pros
- 4.8-star App Store rating from 5M+ users
- Send a fax in under 2 minutes — no setup required
- No predatory weekly billing — transparent monthly pricing
- Built-in document scanner with edge detection
- Delivery confirmation sent to your email
- Business plans available for teams and HIPAA needs
Cons
- Business features require mFax Business plan
- Web app rather than a native iOS app
2. eFax — Best for Enterprise
eFax is the legacy giant of the fax industry. It's been around since 1996 and remains a reliable choice — especially for corporate users who need a permanent dedicated fax number and tight integration with enterprise workflows.
At $18.99/mo, the base plan includes a local or toll-free fax number and 300 pages per month (combined send and receive). A HIPAA-compliant Business Associate Agreement is available, making it viable for healthcare organizations.
The iPhone app works, but it shows its age. The UI hasn't been substantially updated in years, and compared to the clean mobile-first design of newer apps, it feels clunky. For someone checking faxes occasionally on their phone while working primarily at a desktop, that's fine. For anyone who faxes primarily from their iPhone, there are better options.
If you're evaluating eFax versus a newer service, read our mFax vs. eFax comparison for a full side-by-side breakdown, or our list of eFax alternatives if you're looking for something cheaper.
Pros
- Trusted brand — been around since 1996
- Dedicated fax number included ($18.99/mo)
- 300 pages/mo included in base plan
- HIPAA BAA available for healthcare users
- Strong desktop and web integration
Cons
- Expensive at $18.99/mo for casual users
- iPhone app feels dated compared to newer competitors
- Overages billed per page — can add up quickly
- Customer support is slow to respond
3. Fax.Plus — Best for HIPAA Compliance
Fax.Plus (stylized as FAX.PLUS) stands out for two reasons: its genuinely useful free plan and its serious approach to compliance. The free tier gives you 100 pages per month — not a trial, not a teaser — actual ongoing free faxing for light users.
For healthcare providers, legal teams, and anyone handling sensitive documents, paid plans unlock a HIPAA Business Associate Agreement, end-to-end encryption, and audit logs. Fax.Plus is based in Switzerland, which means it operates under strict European privacy regulations in addition to US compliance frameworks.
The iPhone app is functional but not as polished as the web interface. Power users will get the most value here — it's not built for sending one fax quickly, it's built for teams that need compliance, multi-user access, and a complete paper trail. For HIPAA-specific guidance, see our HIPAA compliant fax guide.
Pros
- Genuinely useful free plan: 100 pages/mo
- HIPAA compliance with BAA on paid plans
- Swiss-based — strong privacy regulations
- Works across iPhone, Android, desktop, and email
- Excellent cross-platform sync
Cons
- iPhone app less polished than the web version
- Free plan requires account creation
- HIPAA features locked behind paid tiers
- Interface can feel complex for new users
4. iFax — Best Mobile UI
iFax wins the design award. The iPhone app looks and feels like a modern iOS citizen — smooth animations, clean layout, well-thought-out navigation. It's the kind of app you'd show as an example of what a fax app could look like.
The problem is pricing. The Basic plan at $14.99/month doesn't let you receive faxes — you need the Plus package at roughly $29.99/mo to get inbound faxing. For an app that's already more expensive than most competitors, locking basic functionality behind a premium tier is frustrating.
Apple Watch integration (for fax arrival notifications) is a genuinely nice touch that no other app on this list offers. If you're deeply embedded in the Apple ecosystem, send faxes regularly, and don't mind paying for premium design, iFax delivers. For everyone else, the value-for-money equation doesn't hold up against mFax or Fax.Plus.
Pros
- Genuinely polished iOS design
- Apple Watch integration for notifications
- Clean document scanner built-in
- International faxing supported
- Good contact management features
Cons
- Basic plan ($14.99/mo) cannot receive faxes — receive requires ~$29.99/mo
- Expensive relative to feature set
- Limited free option — nearly none
- Many features better on web than iPhone app
5. FaxBurner — Best Free Tier
FaxBurner is the app for people who only send faxes a few times a year and refuse to pay a monthly subscription for the privilege. The free tier is real: 5 outbound pages and 25 inbound pages per month, every month, with no credit card required.
The catch: your free fax number expires after 24 hours. That means you can receive faxes sent to you today, but the number won't work tomorrow unless you upgrade. For one-off situations where you need to receive a fax response to something you sent, it works. As a permanent fax number for ongoing business use, it doesn't.
For casual use — sending a school form, returning a medical consent document once a quarter — FaxBurner is hard to beat on price. For anything more frequent or sensitive, step up to mFax or Fax.Plus.
Pros
- Genuine free tier — no credit card required
- 5 pages/mo to send, 25 pages/mo to receive for free
- Works via email-to-fax as well as the app
- Simple, no-frills interface — easy to learn
- Paid plans are reasonably priced (~$12.99/mo)
Cons
- Free fax number expires after 24 hours
- No HIPAA compliance on any plan
- Limited to basic document formats
- Delivery reliability lower than top-tier apps
- Not suitable for sensitive or critical documents
6. Genius Fax — Best Pay-Per-Use
Genius Fax carves out its niche with unusually transparent pricing. The app keeps a visible credit counter on screen at all times, so you always know exactly what you've used and what remains. Credits can be purchased individually or as a monthly subscription starting at $3.49/mo — one of the lowest entry prices on this list.
If you have a handful of faxes to send each month and hate the idea of a $15–$20 monthly commitment, Genius Fax is worth considering. The cloud integration (Dropbox, Google Drive, iCloud) works well, making it easy to pull in documents without juggling files.
The tradeoff is an older UI and no compliance features. Genius Fax is best for personal use: sending forms to a doctor's office, faxing a utility company, or sending a contract to someone who still requires faxed signatures. For anything regulated — healthcare, legal — look elsewhere.
Pros
- Transparent credit-based pricing — no surprise charges
- Subscription plans start at just $3.49/mo
- In-app reminders of remaining credits — no mystery billing
- Works with Dropbox, Google Drive, iCloud
- Good iPad support alongside iPhone
Cons
- Design feels dated compared to newer apps
- No HIPAA compliance
- Delivery speeds can be slower than premium apps
- Limited customer support
7. Municorn Fax App — Best for Unlimited Faxing
Municorn Fax App (available at Comfax.com) has emerged as one of the highest-rated apps in 2026 rankings, particularly praised for its clean design and unlimited faxing plans. If you send a high volume of faxes each month and want a flat rate without worrying about overages, Municorn is worth evaluating.
Entry plans start around $3.99/mo with unlimited pages — a pricing model that undercuts eFax and iFax significantly. The scanner is fast and accurate, and the onboarding takes about three minutes from download to first fax sent.
The main question with Municorn is track record. eFax has been around for 25+ years; mFax has 5 million users. Municorn is newer, and for sending sensitive or time-critical documents, the depth of a platform's reliability history matters. For general high-volume use from a personal iPhone, it's a strong contender.
Pros
- Truly unlimited fax plans — no per-page overage charges
- Modern interface, fast document scanning
- Competitive pricing starting around $3.99/mo
- Good App Store ratings for 2026
- Simple onboarding — minimal setup
Cons
- Newer service — less track record than established players
- No HIPAA compliance
- Fewer integrations than larger services
- International faxing limited on entry plans
How We Tested
We evaluated each app on five criteria:
| Criterion | What We Checked |
|---|---|
| Delivery reliability | Did faxes actually arrive? How fast? |
| Pricing transparency | Are fees clearly disclosed before you tap Send? |
| Mobile experience | Is the iPhone app usable, or is it a shrunken web view? |
| Scanning quality | Do documents look clean and readable after scanning? |
| Support & trust signals | App Store rating, number of reviews, company history |
We sent test faxes to real fax numbers (including our own machine and third-party fax services) and checked for delivery confirmation receipts on each.
How to Choose the Right iPhone Fax App
Not every fax app is right for every situation. Here's how to match the app to your use case.
You send faxes occasionally (once a month or less): → FaxBurner (free tier) or Genius Fax (pay-per-credit). Don't pay a monthly subscription you'll forget about.
You need to send faxes from your phone quickly and reliably: → mFax. It's the fastest setup-to-send experience, with the highest delivery success rate and the largest user base for confidence.
You work in healthcare or need HIPAA compliance: → Fax.Plus or eFax (with BAA). Do not send PHI over an app without a signed Business Associate Agreement. See our complete HIPAA fax guide for the full checklist.
You send a large volume of faxes and want unlimited pages: → Municorn Fax App or mFax Business. Both offer flat-rate plans without per-page overages.
You work at a large corporation with IT requirements: → eFax or iFax. These have the longest enterprise track records and the most robust admin/team features.
You Don't Always Need a Fax App
If you only need to send a fax one time, you might not need to download an app at all. Our guide to faxing from iPhone without an app covers email-to-fax and web browser methods that work without installing anything.
What to Look for Before You Download
Before tapping "Get" on any fax app, check these:
- Weekly vs. monthly billing — Search "subscription" in the App Store listing. "Weekly" billing is a red flag for anyone who forgets to cancel.
- Free receive with free send — Some apps let you send for free but charge for incoming faxes. That's fine if you only ever send, but a problem if you need responses.
- HIPAA BAA availability — If you handle any patient health information, you need a signed BAA. Not all apps offer one, even if they claim "HIPAA features."
- Delivery confirmation — A reputable fax app sends you a receipt with the timestamp and recipient number. No confirmation = no proof of delivery.
- App Store reviews over 1,000 — Any fax app with fewer than a few hundred reviews is hard to evaluate for real-world reliability.
Final Verdict
Most people sending the occasional fax from their iPhone need exactly one thing: an app that works reliably without charging them $300/year.
mFax is the best answer for the vast majority of iPhone users — 4.8 stars, 5 million downloads, fast send, and honest pricing. Download it, upload your document, send. Done in two minutes.
For teams in healthcare or legal, Fax.Plus is worth the extra setup for its HIPAA compliance and audit trail. For enterprise corporate users, eFax remains a reliable workhorse. And for anyone who only needs to send one fax and never wants to pay a subscription, FaxBurner's free tier has you covered.
Send Your First Fax Now
Download the mFax app, upload your document — a photo or a PDF — and enter the recipient's fax number. Your confirmation receipt arrives by email. No fax machine. No store. No weekly subscription.
For business teams, mFax Business gives you virtual fax numbers, team accounts, and HIPAA-ready faxing starting at about $9/mo — build your own plan around the exact seats and pages you need, no fixed tiers.