Private by design
Pair with the sync key shown on your Mac. Your files go straight from Mac to device — no accounts, no servers, no tracking. On iPhone they’re protected by your passcode and Face ID.
New Redesigned for iPhone, iPad & Mac
Your iPhone is
a backup disk.
Back up your Mac’s folders to your iPhone or iPad — over Wi‑Fi or cable. Hundreds of thousands of files in minutes, not hours. No cloud, no monthly storage bill.
One app for Mac, iPhone and iPad · Free to try
Only changes1,240 of 412,806 files
96 MB/sPackaged transfer
No cloudMac → iPhone, directly
100,000+small files per sync, no sweat
Wi‑Fi or USBwireless or plugged in
0 bytessent to any cloud
3platforms, one purchase
Built for speed
Hundreds of thousands of files.
Hundreds of thousands of files.
Minutes, not hours.
Copying a photo library, a code project or years of documents file by file — over Wi‑Fi or to a USB drive — can take hours. Backup Disk packs small files into large packages and sends only what changed.
100,000 small files
00:00
Ordinary copyOne file at a time
Backup DiskPackaged, only changes
Illustration. Actual speed depends on your network, devices and files.
Packaged transfer
Thousands of tiny files travel together in big packages, so your network runs at full speed instead of waiting on each file.
Only changes travel
Backup Disk knows what’s already on your device. The next backup copies just the new and edited files — usually in seconds.
Picks up where it left off
Interrupted? The next sync continues with what’s left instead of starting over.
Two minutes to set up
Three steps. Then just tap Sync.
- 1
Choose folders on your Mac
Add the folders you want to protect — or just drag them into the window.
- 2
Pair your iPhone or iPad
Your Mac appears automatically on the same network. Enter the six‑digit sync key once.
- 3
Tap Sync All
Watch it happen live. From then on, only changed files are copied.
Everything you need
A second copy of your work,
A second copy of your work,
always in your pocket.
Wi‑Fi or cable
Your Mac shows up automatically on the same network. Plug in for the fastest transfers.
Several Macs, one device
Back up your MacBook and your studio Mac to the same iPhone or iPad.
Every file at hand
Browse, search, open and share your backups — in the app or the Files app, even offline.
Both ways
Lost something on your Mac? Download any file or folder back from your iPhone or iPad.
No cloud. No storage plan.
The spare space on your iPhone or iPad is fast, always with you and already paid for. Backup Disk puts it to work.
Watch every transfer live
Elapsed time, changed and copied files, packages and speed — on your Mac and your device.
Take a look
Beautiful on every screen.
Free to try
Start free.
Start free.
Go unlimited with PRO.
The free version backs up to 5 GB per device. PRO removes the limit and connects several iPhones and iPads to your Mac at once.
- One purchase unlocks PRO on iPhone, iPad and Mac
- Monthly, yearly or a one‑time purchase
- Verified by the App Store on your device — no account needed
Questions & answers
Do my files go through the internet or a cloud?
No. Files travel directly from your Mac to your iPhone or iPad over your local network or a cable. Nothing is uploaded, and there is no account to create.
Do both devices need to be on the same Wi‑Fi?
Yes — or connected with a cable. Your Mac appears automatically on the iPhone or iPad when both are on the same network.
Where are the backups stored on my iPhone?
Inside Backup Disk’s own storage, protected by your passcode and Face ID. You can browse them in the app and in the Files app, even offline.
Why is it faster than copying files myself?
Copying many small files one by one wastes most of the time on per-file overhead. Backup Disk bundles them into large packages and copies only new or changed files, so later backups usually take seconds.
What do I need?
A Mac with macOS 13 or later and an iPhone or iPad with iOS / iPadOS 16 or later, with Backup Disk installed on both.
Back up today.
Sleep better tonight.
For Mac, iPhone and iPad.