Is Butterfly safe?

Butterfly is an open-source app for people who think better with space around their ideas. Instead of writing everything from top to bottom on a fixed page, you get an endless workspace where you can place notes, sketches, diagrams, images, and documents wherever they make sense. Use it for class notes, meeting notes, research, math, worksheets, planning, whiteboarding, storyboards, product sketc…

Developer: Linwood
Category: Draw
Earliest archived version: 12 Aug 2026
License: AGPL-3.0-only (per F-Droid metadata)

02 / Release notes

Release notes from F-Droid

18 Oct 2026

2.6.1

Changes since 2.6.1-rc.1: Add camera control visibility settings with fading after five seconds of inactivity and temporary visibility by default on mobile Migrate popover menus to Material UI Fix missing default Markdown formatting when importing notes This is a stable release, it includes all the…

Full notes →

01 Oct 2026

2.6.0

Changes since 2.6.0-rc.3: Fix fractional-pixel mismatch in the viewport cache Fix editor state loading and saving across WebDAV connections Automatically sync pinned files while the app is open and after reconnecting This is a stable release, it includes all the changes from the 2.6.0 nightly…

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12 Aug 2026

2.5.5

This is a hotfix update, cherry-picking important fixes from the latest 2.6.0 betas. Cherry picks: Improve context menu background Fix pasted strokes losing their relative positions Fix core pack palettes not being editable Fix incompatible document loading Fix file grid action menu overlapping the…

Full notes →

03 / Package identity

Technical fingerprint

Application IDdev.linwood.butterfly

Latest APK SHA-25689466e7b873cc987dece25952ee6b2522b6692bfb3688221f2cba10a87706d90

Signing certificate1A:88:41:E9:09:12:76:99:69:89:1B:60:0B:38:50:E7:B2:5B:79:2E:6E:31:5B:66:EC:51:F9:86:BD:61:44:A9

MIN ANDROID24TARGET36ARCHITECTUREarm64-v8a · armeabi-v7a · x86_64

04 / History

Archive history

3 versions in WIKI archive: earliest 2.5.5 (12 Aug 2026), latest 2.6.1 (18 Oct 2026).

No change in android.permission.* between 2.6.0 and 2.6.1.

05 / Version archive

Documented releases

3 TOTAL

VersionReleasedAndroidArchitecture

2.6.118 Oct 202624+arm64-v8a, armeabi-v7a, x86_64→2.6.001 Oct 202624+arm64-v8a, armeabi-v7a, x86_64→2.5.512 Aug 202624+arm64-v8a, armeabi-v7a, x86_64→

06 / Safety & access

Safety verdict

Authentic — file hash matches the source indexNo ads or tracking flagged by the source

IntegritySHA-256 verified vs source

SourceOpen-source · fdroid

Permissions8 declared · 4 sensitive

Signaturepresent

Anti-featuresNo known anti-features

Sensitive accessCAMERAREAD_EXTERNAL_STORAGERECORD_AUDIOWRITE_EXTERNAL_STORAGE

Declared permissions

android.permission.ACCESS_NETWORK_STATE android.permission.ACCESS_WIFI_STATE android.permission.CAMERA android.permission.INTERNET android.permission.READ_EXTERNAL_STORAGE android.permission.RECORD_AUDIO android.permission.WRITE_EXTERNAL_STORAGE dev.linwood.butterfly.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

Tracker status: Not assessed by WIKI for Android.

07 / Sources

Evidence ledger

Each entry is a captured public reference backing this record.

RepositorySource package page↗Source codeSource repository↗