ghostmemo vs Keywave.
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
Keywave.
Securely encrypt and decrypt messages directly on your device. Manage your PGP keys locally without any server interaction or data tracking. Offers robust key generation and import/export options with a clean interface.
- Encrypt and decrypt messages
- Generate RSA keypairs
- Manage unlimited keys
- Import/export keys
- Native SwiftUI interface
- 100% local processing
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PGP encryption for people who value their privacy. Everything runs on your device. No servers, no tracking, no compromises. Keywave is a native iOS app for PGP encryption and decryption. Encrypt messages before sending them. Decrypt messages you receive. Manage your keys. That's it. Everything runs locally using Protonmail's open-source gopenpgp library. Your keys never leave your phone. Features: • Encrypt & decrypt messages with a tap • Generate 2048, 3072, or 4096-bit RSA keypairs • Store unlimited keys with search and filtering • Import from files, clipboard, or share extension • Export as ASCII Armored or Binary • Native SwiftUI interface with dark mode Why Keywave: • 100% local — no servers, no cloud, no network requests • Zero data collection — no analytics, no tracking • Built on Protonmail's battle-tested gopenpgp library • Keys stored securely in iOS Keychain • Compatible with GPG and other PGP tools Free. No ads. Works offline. Requires iOS 17.5+. New features coming in the next version: This will include a keyboard extension, and also adding support for encrypting and decrypting files. potentially could an encrypted file vault.
Screenshots
Verdict
The clearest difference is rating: ghostmemo at 5.0 against Keywave.'s 2.8. ghostmemo also leads on update cadence (monthly vs every 6 months). Keywave.'s advantage is in-app purchases (none vs 2). On price, 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
Both are free to download. ghostmemo sells 2 in-app purchases, starting at $2.99 per month. Keywave. asks for nothing beyond the download.
ghostmemo holds the better App Store score, 5.0 against 2.8. Both are backed by a comparable volume of ratings — 2 and 4 respectively.
ghostmemo ships an update monthly, Keywave. every 6 months. The most recent releases landed on October 1, 2026 and September 17, 2026 respectively.
| Parameter | ghostmemo | Keywave. |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 2.8 (4 ratings) |
| Positive reviews | — | 33.3% of reviews |
| Number of ratings | 2 | 4 — better |
| Update frequency | Monthly — better | Every 6 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | Free — better |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.2 — better | 17.6 |
| Further details — not scored | ||
| Size | 3 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | COLIN DIVELY | William Kelley |
Customer experience
ghostmemo
Keywave.
In-app purchases
ghostmemo
- ghostmemo+$2.991 Month
- ghostmemo+$24.991 Year
Keywave.
No in-app purchases









