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SPECIFICTION
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Islet vs MoodHaven Journal

Islet

islet.hamsterbase.com

MoodHaven Journal

moodhaven.app

Side by side

FigureIsletMoodHaven Journal
Price fromFreeFree
Free planYesYes
Free trial——
Open sourceYes—
Web—Yes
Windows—Yes
macOS—Yes
Linux—Yes
iOSYesYes
AndroidYesYes
Plans published11
Spec score · Journaling Software8.2 (#15)8.4 (#10)
Spec score · Journaling apps8.2 (#16)8.9 (#5)
Account RequirementNo sign-up or personal details are required.No account or email is required to use the app.
End-to-End EncryptionData is encrypted on the device before being uploaded.Entries use AES-256-GCM encryption with PBKDF2-HMAC-SHA256 and 600,000 iterations.
End-to-end encryptionYesYes
Free planYesYes
Available platformsios,android,chrome_extensionweb,windows,macos,linux,ios,android

Plans

Islet

  • FreeFree

Islet pricing →

MoodHaven Journal

  • FreeFree

MoodHaven Journal pricing →

In their own words

Islet

Islet has no write-up on Specifiction yet; its figures are above.

Visit islet.hamsterbase.com

MoodHaven Journal

MoodHaven Journal is a free, open-source journaling app with guided prompts and end-to-end encryption. It runs on Android, iOS, Windows, macOS, Linux, and the web; its browser PWA needs no installation or account. Native desktop apps are available for Windows, macOS, and Linux, and Wear OS supports voice captures and memos. Entries use AES-256-GCM encryption with PBKDF2-HMAC-SHA256 and 600,000 iterations. Keys are derived in memory and cleared when the app is locked, and passwords are not stored or transmitted. The app requires no account or email, and data is not uploaded or shared unless the user exports it. Devices can sync over a local network using encrypted transport without a cloud relay. Entries can be exported as encrypted .moodhaven backups or plaintext files. Wear OS voice memos are transcribed locally with Whisper.cpp. AI analyzes metadata such as mood scores and patterns; journal text stays on the device. The app includes 15 predefined activities and supports up to 50 custom activities.

Visit moodhaven.app