Dualock vs ghostmemo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Dualock
This app securely stores your notes by splitting them into two encrypted parts, stored separately. Access requires authentication from two specified SNS accounts, ensuring your data remains private and inaccessible to others.
- Two-part encrypted note storage
- Separate cloud storage for each part
- Dual SNS account authentication
- No password required
- Secure and private data handling
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Write your note. Leave Dualock keep it safe in the cloud. We do not use password, because password is not safe enough and hard to remember. Every note you saved here will be splited into two part. Both the parts will encrypted separately and saved separately, using a pair of SNS account you specified. To unlock your note, both accounts is needed. Only you know the pair and the order of the pair. It's safe. Even I don't know how to crack it.
ghostmemo
Securely store private notes, passwords, and logs with end-to-end encryption. This app offers local encryption, Face ID/PIN protection, and an intuitive interface for easy data safeguarding. Keep your personal information private and accessible only to you.
- End-to-end encryption
- Local data handling
- Face ID/PIN authentication
- Password storage
- Health log keeping
- Text formatting
- Beginner encryption guide
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ghostmemo is a file management and note-taking app designed with security in mind. Encryption is an invaluable tool for preserving your digital privacy, and ghostmemo simplifies the process of safeguarding your personal thoughts. You can use ghostmemo to easily and safely jot down private notes, keep a health log, store your passwords, and more. With one tap, any memos can be encrypted. Users can opt-in to Face ID or make their own custom PIN, ensuring that the authentication and encryption process is quick and simple. As an added level of security, ghostmemo gives you the option of locking your memos so that they cannot be opened or altered. All encryption is handled locally on your device, using secure standards and algorithms supported by Apple's operating system. Data can be encrypted, decrypted, locked, or deleted without any network connection. You hold the keys to your own data, at all times. Learning to use the app is quick and intuitive — ghostmemo also includes a helpful guide to encryption for beginners to , as well as text formatting features you rely on to write comfortably. ghostmemo gathers no data, requires no account registration, and provides everyone the peace of mind that their most personal information is safe. ghostmemo utilizes Apple's standard Terms of Use (EULA) –– to read it in detail, follow the link below https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ghostmemo's privacy policy can be found at the following link: https://cbd1221.github.io/ghostmemo/#privacy-policy feedback or feature requests can be sent here: ghostmemo.app@gmail.com
Screenshots
Verdict
The clearest difference is price: ghostmemo at Free against Dualock's $1.99. ghostmemo also leads on update cadence (monthly vs every 4 months). Dualock's advantage is in-app purchases (none vs 2) and iOS requirement (12.0 vs 17.2). On rating, ratings volume, ads 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
ghostmemo is free to download; Dualock costs $1.99 up front. ghostmemo sells 2 in-app purchases, starting at $2.99 per month. Dualock asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Dualock against 5.0 for ghostmemo. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
Dualock ships an update every 4 months, ghostmemo monthly. The most recent releases landed on October 3, 2026 and October 1, 2026 respectively.
| Parameter | Dualock | ghostmemo |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 4 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Freemium — better |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.0 — better | 17.2 |
| Further details — not scored | ||
| Size | 26 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Gear Zero Network Inc. | COLIN DIVELY |
Customer experience
Dualock
ghostmemo
In-app purchases
Dualock
No in-app purchases
ghostmemo
- ghostmemo+$2.991 Month
- ghostmemo+$24.991 Year
