Side by side
4Sync vs Filen
Both stand on cloud storage services. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan AndroidiPhoneMac+2
4Sync combines cross-device synchronization, backup copies, version history, and configurable folder sharing. Its free plan and trial provide entry options, while Premium adds the stated 1 TB storage and 20 GB upload allowance.
Visit 4Sync
Free plan Open source AndroidAPIiPhone+4
Filen combines encrypted cloud storage with syncing, notes, chats and developer tools. Before relying on a free account for long-term storage, note its three-month inactivity deletion policy.
Visit FilenThe facts
| 4Sync | Filen | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Yes |
| Runs on | Android, iPhone, Mac, Web, Windows | Android, API, iPhone, Linux, Mac, Web, Windows |
| Lowest paid plan | Premium: $8.25 a month | Pro I: €1.99 a month |
| Plans published | 2 | 6 |
| Maker | Not published | Filen |
| Website | 4sync.com | filen.io |
| On cloud storage services | #4 of 64 | #1 of 64 |
4Sync: what it does well
- 1 TB online storage
- 20 GB maximum upload size
- File versioning and backup copies
- Private or public shared folders
- Windows, macOS, iOS, and Android support
What to know first
- Monthly traffic starts at 100 GB
- Extra traffic requires purchase
- Service is designed for ages 18 and older
- Premium costs $8.25 a month
Filen: what it does well
- Client-side, end-to-end encryption.
- Free account includes 10GB storage.
- Available across desktop, mobile and web.
- Includes encrypted notes and chats.
- Offers TypeScript, Rust and Go SDKs.
What to know first
- Inactive free-account data is deleted after three months.
- Free account storage is 10GB.
- Paid plans start at €1.99/mo.