Is Featherline: HRT Tracker safe?

Featherline is a thoughtful medication tracker built for people on long-term hormone therapy who want to keep their personal records private. Everything you log — doses, schedules, personal notes — stays in an encrypted database on your device, under your control. Track your routine, the way you actually live it Build a personal medication schedule, daily or weekly. Get reminders at dose times, w…

Developer: mkx173
Category: Health Manager
Earliest archived version: 30 Jun 2026
License: GPL-3.0-only (per F-Droid metadata)

02 / Release notes

Release notes from F-Droid

15 Oct 2026

1.4.2

New estimate calibration: tune the estradiol estimate to your own blood test results, route by route, with a prediction interval on the Home chart - Oral, sublingual, patch, gel and injection estimates updated to follow published blood levels - New Journal date widget and home-screen shortcuts…

Full notes →

30 Jun 2026

1.3.3

Added a new Journal tab to track meaningful dates on a timeline, with milestones and a short note for each day - Added support for importing dose history and blood test results from another HRT tracker's exported file - Added options to reorder and hide the home-screen cards - Bug fixes and…

Full notes →

03 / Package identity

Technical fingerprint

Application IDcom.mkx.hrttracker

Latest APK SHA-2563fe60a336b62dcce5667f6154d9bcee1109da4e376b31d1dc3c60820b9dcb484

Signing certificateEA:FB:62:3C:A5:5F:65:89:4F:5F:8A:58:0D:E2:E5:B2:1B:F0:FE:94:77:F9:F8:72:01:2D:73:DC:5A:D5:1E:89

MIN ANDROID26TARGET37ARCHITECTUREarm64-v8a

04 / History

Archive history

2 versions in WIKI archive: earliest 1.3.3 (30 Jun 2026), latest 1.4.2 (15 Oct 2026).

No change in android.permission.* between 1.3.3 and 1.4.2.

05 / Version archive

Documented releases

2 TOTAL

VersionReleasedAndroidArchitecture

1.4.215 Oct 202626+arm64-v8a→1.3.330 Jun 202626+arm64-v8a→

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

Permissions9 declared · 0 sensitive

Signaturepresent

Anti-featuresNo known anti-features

Sensitive accessNo sensitive permissions

Declared permissions

android.permission.ACCESS_NETWORK_STATE android.permission.FOREGROUND_SERVICE android.permission.POST_NOTIFICATIONS android.permission.RECEIVE_BOOT_COMPLETED android.permission.SCHEDULE_EXACT_ALARM android.permission.USE_BIOMETRIC android.permission.USE_FINGERPRINT android.permission.WAKE_LOCK com.mkx.hrttracker.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↗