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10 Best Fax Apps in 2026 (Honest Reviews)

Last updated : October 13, 2026

Fax machines are basically extinct outside a handful of law firms and hospital basements – but faxing itself never went away. The IRS still accepts faxed forms. Doctor's offices still want records sent "by fax." Real estate contracts, insurance claims, government paperwork – a surprising amount of it still runs through a fax number, just not a physical machine anymore.

The good news: you don't need one. A fax app turns your phone into a virtual fax machine, no landline or toner involved. We compared the apps people actually rely on in 2026 – what they cost, how the fax quality holds up, and who each one is really built for.

1. Municorn Fax App – Best Overall

Municorn Fax App is the most complete package on this list if you want one app that handles everything: sending, receiving, and a real fax number, without juggling a separate service for each.

Every plan comes with a dedicated US fax number in any state you pick, and it stays yours for as long as you're subscribed – hand it to your doctor or your bank and incoming faxes just land in the app. There's no page cap in either direction, which matters once you're sending anything longer than a one-page form. It sends to 90+ countries, imports files from PDF, DOC, JPG, PNG, and TIFF, and has a built-in camera scanner for paper documents. It's also HIPAA-compliant, independently certified by Compliancy Group, with a Business Associate Agreement available for healthcare practices.

It currently holds a 4.8 average across more than 370,000 App Store and Google Play ratings, with over 18 million US downloads – one of the higher-rated apps in the category. Plans start at $9.99/week up to $249.99/year, and you can send a free one-page test fax before committing. If you want to see how it stacks up feature-by-feature against the rest of the field, this online fax comparison breaks down pricing and compliance side by side.

Best for: Anyone who wants a single app for regular sending and receiving, with real HIPAA compliance and no page limits.

2. eFax – Best for Large Businesses

eFax has been around since the early days of internet faxing, and it's built its reputation on enterprise features: multi-user accounts, admin controls, and archive storage for companies that generate a high volume of paperwork.

It's a solid pick if you're setting up faxing for a whole office rather than one person, with account management tools that most consumer-focused apps don't bother building. The trade-off is that its plans lean toward business pricing, and casual or occasional users will likely find it more than they need.

Best for: Offices and teams that need multi-user admin controls, not solo users sending the odd fax.

3. iFax – Best for Compliance on a Budget

iFax positions itself as a compliance-first option without the enterprise price tag – it offers a Business Associate Agreement for healthcare users at a lower cost than some of the bigger enterprise brands, along with a dedicated personal fax line and cross-platform support.

It's a reasonable middle ground for solo practitioners or small clinics that need a documented compliance path but don't need eFax-level account management.

Best for: Solo healthcare providers or small practices that need a BAA without enterprise pricing.

4. Fax.Plus – Best Free Tier

Fax.Plus stands out for offering one of the more generous free allowances in the category, alongside a full compliance stack for users who eventually need it. Its scanner and HD-quality send mode are frequently mentioned as some of the strongest in independent testing.

The compliance features are there, but a signed BAA is usually reserved for the top-tier enterprise plan, so smaller users may not get that specific protection at the price they're paying.

Best for: People who want to try faxing for free before deciding if they need a paid plan.

5. Genius Fax – Best Pay-as-You-Go Option

Built by the team behind Genius Scan, Genius Fax skips subscriptions entirely in favor of a credit system – you buy credits and spend them only when you actually send a fax. It connects smoothly to Google Drive, Dropbox, and iCloud for pulling in documents.

That model makes it a good fit for anyone who faxes a handful of times a year and doesn't want a recurring charge sitting on their card. It's less suited to businesses that fax daily, since per-fax credits add up faster than a flat monthly plan.

Best for: Occasional senders who don't want a monthly subscription.

6. FaxBurner – Best Free Receiving Option

FaxBurner's angle is the receiving side: it gives out a temporary fax number for free, useful for the one time a year someone insists on faxing you something back. Its permanent free tier includes a small monthly allowance of send and receive pages, with no card required to start.

Fax quality on the free tier tends to lag behind paid competitors in side-by-side tests, and temporary numbers expire unless you upgrade – so it's best treated as a backup option, not a primary fax line.

Best for: Rarely faxing, and mainly needing somewhere for an incoming fax to land.

7. mFax – Best for First-Time Users

mFax focuses on a clean, simple setup process, usually pointed to as an easy on-ramp for someone who's never used a fax app before. A short free trial lets new users test sending before paying anything.

It covers the basics well – scan, enter a number, send – without the deeper admin or compliance tooling that business-focused apps build out.

Best for: First-time faxers who just want the simplest possible setup.

8. MyFax – Best for Owning a Number Cheaply

MyFax has built its niche around being one of the more affordable ways to get and keep a dedicated fax number, without the bells and whistles of the pricier enterprise apps.

It's a no-frills option – fine for straightforward sending and receiving, but light on the extras like advanced compliance certifications or multi-user tools.

Best for: Budget-conscious users who mainly want a number of their own.

9. RingCentral Fax – Best if You Already Use RingCentral

RingCentral's fax feature is really an add-on to its broader business communications platform, which makes it convenient if your team is already using RingCentral for calls and messaging – faxing just becomes one more tab.

It's not really built to be chosen on its own merits as a standalone fax app; it makes the most sense as a bundled feature rather than a dedicated faxing tool.

Best for: Existing RingCentral users who want faxing without adding another separate app.

10. MetroFax – Best Legacy Budget Option

MetroFax is one of the older names in online faxing, still used mainly by small businesses that set up an account years ago and never had a reason to switch. Its plans are generally priced competitively for basic sending and receiving.

It doesn't get the same frequent feature updates as newer, mobile-first apps, so anyone starting fresh in 2026 will likely find more modern options with better apps and cleaner interfaces.

Best for: Small businesses that want a straightforward, no-frills legacy fax line.

Which Fax App Should You Choose?

If you only need to send the occasional fax, a pay-as-you-go app like Genius Fax or a free tier like FaxBurner will cover it without locking you into a subscription. If you're a solo healthcare provider, iFax or Fax.Plus give you a compliance path without enterprise pricing. But for anyone who needs to send and receive regularly, wants a real dedicated fax number, and needs HIPAA compliance built in from the start, Municorn Fax App is the most complete option on this list – unlimited pages, no separate add-ons, and one of the highest user ratings in the category.