EteSync Notes vs OPSWAT SDP
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EteSync Notes
This app offers a secure and private note-taking experience. It features a change journal for data history, allowing you to restore or revert to past versions. An EteSync account is required, which can be hosted on a free, open-source server.
- Secure and privacy-respecting
- Open-source client and server
- Full data history and change journal
- Easy to use with credentials
- Data restoration and versioning
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EteSync is a secure and privacy respecting note taking application. In order to use this application you need to have an EteSync account, either on an existing server or your own (it's free and open source). Easy to Use =========== EteSync is very easy to use, you just put in your credentials and the app is ready to use. Secure & Open ============ EteSync is secure and respects your privacy. Don't believe us? You shouldn't, just verify yourself, both the client and server are open source. Full History ========= A full history of your data is saved in a change journal which means your data is never lost, even if deleted, and you can always restore, revert and access past versions of your data.
OPSWAT SDP
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Intended for use with the OPSWAT Mobile App, see https://apps.apple.com/us/app/opswat-mobile-app/id1037540857. OPSWAT's Secure Access solution for the MetaAccess Platform ensures that access from your device to your organization's applications is secure, whether connecting from the office, home or other remote locations, using our patented VPN technology. With SDP you will increase security by darkening visibility to your protected applications, and ensuring that the SDP VPN only connects to authorized user services.
Screenshots
Verdict
The clearest difference is update cadence: EteSync Notes at weekly against OPSWAT SDP's every 6 months. EteSync Notes also leads on iOS requirement (10.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
EteSync Notes ships an update weekly, OPSWAT SDP every 6 months. The most recent releases landed on June 4, 2026 and February 24, 2026 respectively.
| Parameter | EteSync Notes | OPSWAT SDP |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Weekly — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 21 MB | 62 MB |
| Age rating | 4+ | 4+ |
| Developer | EteSync Ltd | OPSWAT, Inc. |
In-app purchases
EteSync Notes
No in-app purchases
OPSWAT SDP
No in-app purchases
Questions
Is EteSync Notes free?
Is OPSWAT SDP free?
Do EteSync Notes or OPSWAT SDP have ads?
Which is updated more often, EteSync Notes or OPSWAT SDP?
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