Comparison

ghostmemo vs Keywave

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • End-to-end encryption
  • Local data handling
  • Face ID/PIN authentication
  • Password storage
  • Health log keeping
  • Text formatting
  • Beginner encryption guide
Features
Read full description

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

About

Keywave

This app provides robust PGP encryption and decryption capabilities directly on your device. It allows you to generate, manage, import, and export PGP keys locally, ensuring your data remains private and secure without server reliance.

Highlights
  • Encrypt and decrypt messages
  • Generate PGP keys (2048-4096 bit)
  • Manage unlimited local keys
  • Import keys from files or clipboard
  • Export keys in various formats
  • 100% local processing
  • Zero data collection
Read full description

PGP encryption for people who value their privacy. Everything runs on your device. No servers, no tracking, no compromises. WHAT IT DOES Keywave is a native iOS app for PGP encryption and decryption. Encrypt messages before you send them. Decrypt the ones you receive. Manage your keys. That's it. Everything runs locally using Protonmail's open-source gopenpgp library. Your keys never leave your phone. We can't see them even if we wanted to. CORE FEATURES • Encrypt & Decrypt Messages Swipe to switch modes. Select your keys. Tap to encrypt or decrypt. Copy the result. Done. • Generate PGP Keys Create new keypairs at 2048, 3072, or 4096-bit RSA. Optional password protection. Takes seconds. • Key Management Store unlimited keys on your device. Search by name, email, or fingerprint. Filter by public, private, expiring, or expired. Sort by name, date, type, or fingerprint. • Import Keys Open key files (.asc, .gpg, .key, .pub, .pem) from the Files app, paste from the clipboard, or share text straight into Keywave from another app. • Export Keys ASCII Armored or binary. Save to Files, share to another app, or copy to the clipboard. • Clean iOS Design Native SwiftUI. Haptic feedback. Dark by default. No clutter. WHY KEYWAVE Most PGP apps are ugly, complicated, or both. We're neither. • 100% Local Processing No servers. No cloud. No network requests at all. Everything happens on your device. • Zero Data Collection We don't collect, store, or see your data. No analytics. No tracking. No telemetry. • Open Source Foundation Built on Protonmail's battle-tested gopenpgp library. Transparent. Auditable. • iOS-Native Designed for iOS from the start. Not a port. Not a web page in a wrapper. WHO IT'S FOR • Privacy-conscious individuals • People tired of bloated encryption tools • Anyone who needs PGP without the complexity • Users who want their data to stay on their device SECURITY • Keys stored in the iOS Keychain • Password prompts for protected keys • Signature verification when you decrypt • No plaintext storage of sensitive data • Standard OpenPGP, so it works with GPG and other PGP tools WHAT IT'S NOT This isn't a messaging app. We don't send anything. We encrypt and decrypt text; you send it however you like. This isn't cloud-based. Everything stays on your device. If you want backups, export your keys yourself. This isn't for everyone. If you need someone to explain why encryption matters, we're not that app. THE FINE PRINT • Free. Every feature included. • No ads. No in-app purchases. • Requires iOS 17.6 or later • Works completely offline • Export your keys to keep your own backups Privacy isn't a feature. It's the whole point.

Screenshots

ghostmemo4 screens
Keywave3 screens

Verdict

The call

The clearest difference is in-app purchases: Keywave at none against ghostmemo's 2. ghostmemo's advantage is update cadence (monthly vs every 4 months). On price, ads, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. ghostmemo sells 2 in-app purchases, starting at $2.99 per month. Keywave asks for nothing beyond the download.

UpkeepUpdate frequency

ghostmemo ships an update monthly, Keywave every 4 months. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

Scorecard3 real differences · 7 level
ghostmemo versus Keywave: the parameters behind the verdict, then further details
ParameterghostmemoKeywave
PriceFreeFree
Rating4.7 (3 ratings) — better—
Positive reviews—33.3% of reviews
Number of ratings3 — better—
Update frequencyMonthly — betterEvery 4 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPad — betteriPhone
Requires iOS17.2 — better17.6
Further details — not scored
Size3 MB13 MB
Age rating4+4+
DeveloperCOLIN DIVELYWilliam Kelley

Customer experience

ghostmemo

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Keywave

Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

In-app purchases

2 purchases

ghostmemo

Subscriptions2
  • ghostmemo+$2.991 Month
  • ghostmemo+$24.991 Year
None

Keywave

No in-app purchases

Questions

Is ghostmemo free?
ghostmemo is free to download, with in-app purchases available.
Is Keywave free?
Keywave is free to download, with no in-app purchases.
Do ghostmemo or Keywave have ads?
Neither ghostmemo nor Keywave shows ads.
Which is updated more often, ghostmemo or Keywave?
ghostmemo ships an update monthly, and Keywave every 4 months. Most recently, ghostmemo was updated on October 30, 2026 and Keywave on November 5, 2026.

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