- Pick it if you are:
- Privacy-focused individuals leaving Google Drive; Existing Proton Mail, VPN or Pass users
- Top complaint:
- Proton Drive not syncing: desktop app stalls or says 'synced' when it isn't
- Price:
- Free plan, paid from $4.99/mo
- Pick it if you are:
- Privacy-focused individuals; Therapists, clinics and other HIPAA-covered practices
- Top complaint:
- Why is Sync.com so slow? Uploads and downloads crawl
- Price:
- Free plan, paid from $8/mo
Score Comparison
Signals Comparison
Proton Drive
- Proton Drive not syncing: desktop app stalls or says 'synced' when it isn't(8/10)
- Sync conflicts, 'Name clash' duplicates and deleted files coming back(8/10)
- Over storage after downgrading: sync stops and files can be deleted(8/10)
Sync.com
- Sync.com not syncing or stuck on indexing(7/10)
- 'Your Sync folder is unexpectedly empty' error(6/10)
Proton Drive
- Why is Proton Drive so slow? Uploads and downloads crawl(7/10)
Sync.com
- Why is Sync.com so slow? Uploads and downloads crawl(8/10)
- No block-level sync: small edits re-upload the whole file(6/10)
Proton Drive
- No Proton Drive Linux app (only a command-line tool)(7/10)
- rclone with Proton Drive fails: 'Too many recent API requests'(6/10)
- Few collaboration features and almost no third-party integrations(5/10)
Sync.com
- No Sync.com Linux app(6/10)
- Few integrations and no Office editing in the browser(5/10)
Proton Drive
- Proton Drive photo backup stuck or not uploading(6/10)
Sync.com
- Sync.com camera upload not working in the background(5/10)
Proton Drive
- Proton Drive renewal price is higher than the first-year deal(5/10)
- Free plan is really 2 GB until you unlock the other 3 GB(5/10)
- Proton Drive refund denied after the first 30 days(6/10)
Sync.com
- Sync.com auto-renewed and won't refund(7/10)
- Sync.com intro discount ends: renewals cost more(6/10)
Proton Drive
- Proton support is slow and redirects to forms(6/10)
Sync.com
- Sync.com support is slow and email-based(6/10)
Proton Drive
- Missing features: no incremental backups, duplicate detection or 'new photos only'(4/10)
Sync.com
No signals
Proton Drive
No signals
Sync.com
- Cancelling Sync.com deletes your files (no downgrade to free)(8/10)
- Sync.com web panel slow and freezes(5/10)
Proton Drive
No signals
Sync.com
- Forgot Sync.com password: you may lose access to everything(9/10)
Pricing Comparison
Proton Drive
Users: 1.0
Storage: 5 GB (2 GB base + up to 3 GB earned)
Limits: 5 GB max, shorter version history than paid plans, storage shared with Proton Mail, no priority support
Users: 1.0
Storage: 200 GB
Limits: Drive only; no VPN, Pass or premium Mail
Users: 1.0
Storage: 200 GB
Limits: Drive only
Users: 1.0
Storage: 500 GB (shared with Mail)
Limits: Storage is shared across all Proton apps
Users: 1.0
Storage: 500 GB (shared with Mail)
Limits: Storage is shared across all Proton apps
Users: 2.0
Storage: 2 TB
Limits: Two users only
Users: 2.0
Storage: 2 TB
Limits: Two users only
Users: 6.0
Storage: 3 TB
Limits: Storage pooled across the family
Users: 6.0
Storage: 3 TB
Limits: Storage pooled across the family
Storage: 1 TB per user
Limits: Drive, Docs and Sheets only (no Mail/VPN)
Storage: 1 TB per user
Limits: Drive, Docs and Sheets only
Users: 5000.0
Storage: 1 TB per user
Sync.com
Users: 1.0
Storage: 5 GB
Limits: 5 GB storage, short file history, no Microsoft Office previews in the web panel, no read-only team shared folders, link expiry and download limits are paid features
Users: 1.0
Storage: 1 TB
Limits: No custom branding, no HIPAA compliance
Users: 1.0
Storage: 1 TB
Limits: No custom branding, no HIPAA compliance
Users: 1.0
Storage: 5 TB
Limits: Single user, no admin console
Users: 1.0
Storage: 5 TB
Limits: Single user, no admin console
Users: 1.0
Storage: Unlimited
Limits: No custom branding, no HIPAA compliance
Users: 1.0
Storage: Unlimited
Limits: No custom branding, no HIPAA compliance
Storage: 1 TB per user
Limits: No custom branding, role-based access control or 2FA enforcement
Storage: 1 TB per user
Limits: No custom branding, role-based access control or 2FA enforcement
Storage: 2 TB per user
Limits: No phone support
Storage: 2 TB per user
Limits: No phone support
Storage: 10 TB per user
Storage: 10 TB per user
Feature Comparison
| Feature | Proton Drive | Sync.com |
|---|---|---|
| Security | ||
| End-to-end encryption All plans, including free | ||
| Zero-knowledge end-to-end encryption All plans | ||
| Sync | ||
| Windows desktop sync app Activity tab with pause/resume and rename | ||
| Block-level (delta) sync Whole file re-uploads on every change | ||
| macOS desktop sync app Menu bar app with File Provider, on-demand sync | ||
| Linux desktop app In development; Drive CLI available, no continuous sync | ||
| Selective sync | ||
| Command-line client (Drive CLI) Linux, macOS, Windows; released June 2026 | ||
| Online-only files (CloudFiles) macOS 13+ and Windows 10+ | ||
| Block-level / incremental sync Users request it for large files | ||
| Mobile | ||
| Mobile photo backup One-way backup on iOS and Android | ||
| Camera upload iOS and Android | ||
| Backup | ||
| File version history Up to 10 years on Drive Plus and bundles; 365 days on Drive Professional | ||
| Sharing | ||
| Password-protected links | ||
| Collaboration | ||
| Encrypted Docs and Sheets editors | ||
| Online document editing | ||
| Compliance | ||
| HIPAA compliance Solo and Teams plans | ||
| Integrations | ||
| Official API for third-party tools rclone backend is unofficial and throttled | ||
| Support | ||
| Live chat support Email tickets; phone on Teams 10TB | ||
| Bundle | ||
| Bundled VPN and password manager Proton Unlimited, Duo and Family include Proton VPN and Proton Pass | ||
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