Dropbox has a free plan, Basic, with 2 GB of storage listed on dropbox.com/plans. Basic can be signed in on only three devices at a time.
The three-device rule
Basic users can be logged into up to three devices at a time (Dropbox Help, updated Nov 14, 2025). The same limit applies to a plan called Dropbox Simple. Plus, Family, Professional and Essentials have no cap, and neither do team plans, although admins on Advanced, Business Plus and Enterprise teams can set one.
A device is counted when you sign in to the Dropbox desktop app or the mobile app. It then appears in the device list under Settings, Security on dropbox.com.
- Signing in at dropbox.com doesn't count toward the three and doesn't add a device to the list.
- If you were on Basic before March 2019, devices you'd already signed in on stay listed even when there are more than three. You still can't add a fourth without signing one out.
Try to sign in on a fourth device and Dropbox asks you to log out of one of the existing three. You can also do that ahead of time from the device list.
What the paid plans cost on iOS
Inside the Dropbox iPhone app (US App Store, as of Nov 9, 2026), Simple is $6.99 a month, Plus $11.99 a month or $119.99 a year, and Family and Professional $19.99 a month each.
Sources
- Dropbox Help — How many devices can I use with my Dropbox account? (checked Nov 9, 2026)
- Dropbox — Plans (checked Nov 9, 2026)
- Apple App Store (US) — Dropbox: Cloud Storage Backup (checked Nov 9, 2026)