Slover Digital

SatisFaxion

Pay per fax. Nothing else.

Send a fax from your phone without signing up for anything. Buy credits when you need them, and they never expire. One credit sends up to five pages, and a fax that fails to deliver gives the credit straight back.

SatisFaxion fax app screen
Platforms
iPhone (iOS 18.6 and up), Android coming
Price
From $0.75 a fax
Credits
5 for $4.99, 15 for $12.99, 40 for $29.99
Sends to
United States and Canada
On the App Store since
August 2026

Fax apps got greedy

Most fax apps want a monthly subscription to send the two faxes a year most people need. SatisFaxion charges for what you send and nothing else. No account, no ads, no monthly fee, and credits that never expire.

Your document is deleted from the server the moment the fax is delivered. Nothing is kept.

What you can do

  • Scan with the camera

    Edge detection, shadow clean up and auto straighten.

  • Open or write a document

    Pick a PDF or photo, or write one from scratch in the app.

  • Sign and mark up

    Draw a signature or initials, ink, highlight and type anywhere on the page.

  • Redact for good

    Redaction removes what is underneath instead of covering it.

  • Cover sheets

    Four looks with a live preview. Free unless it is the only page.

  • See it like a fax machine

    Preview every page in black and white before it sends.

  • Blank page check

    Blank pages get flagged so you never pay to fax nothing.

  • Schedule a fax

    Send now or later, and cancel a scheduled fax to get the credit back.

  • Free PDF tools

    Rotate, reorder, combine, split, compress, OCR, page numbers, watermark and password protect, all on the phone.

  • Delivered or it is free

    If a fax fails, the credit comes back automatically.

Screens

  • SatisFaxion fax app screen 1
  • SatisFaxion fax app screen 2
  • SatisFaxion fax app screen 3
  • SatisFaxion fax app screen 4
  • SatisFaxion fax app screen 5

How it is built

The iPhone app is native Swift and SwiftUI with VisionKit scanning and StoreKit 2 purchases, verified on the server. A Laravel API on Slover Digital's own server queues each fax, tracks delivery and keeps a credit ledger, so a failed fax refunds itself without a support ticket. The Android app is built in Kotlin to match the iPhone version feature for feature.

Good to know

SatisFaxion is send only and does not receive faxes. It sends to numbers in the United States and Canada. It is not HIPAA certified.

Questions

Do I need a subscription to send a fax?

No. SatisFaxion has no subscription and no monthly fee. You buy credits only when you need them, and they never expire.

How much does a fax cost?

One credit sends up to five pages. Credits cost $4.99 for 5, $12.99 for 15, or $29.99 for 40, which works out to $1.00 down to $0.75 a fax.

What if my fax does not go through?

If a fax fails to deliver, the credit comes straight back to your account.

Does SatisFaxion keep my documents?

No. Your document is deleted from the server the moment the fax is delivered.

Can I receive faxes?

Not yet. SatisFaxion is send only.

Where can I send a fax?

To fax numbers in the United States and Canada.