Loop Habit Tracker: The free, open-source Android tracker (org.isoron.uhabits, also searched as "habit loop tracker") — a clean, private, ad-free app with a smart "habit strength" score instead of brittle streaks. (Android only · Free, open-source, no ads, no accounts)
HabitForge: The honest, whole-loop habit system — from the original habit-tracker pioneer (2009). Streaks and routines, yes, but also nudges at the real moment (even spoken in your own voice, on smart glasses), the half no streak app has — what a choice does to you hours out, and permission to let the right things drift — plus analysis of which actions actually move your energy, mood, and sleep. Built on HiveJournal.
✓ Completely free, open-source, private, and ad-free — a community favorite
✓ A thoughtful "habit strength" algorithm that survives the occasional miss (no guilt spiral)
✓ Fast, offline, no account required — your data stays on your device
✓ Beloved by privacy-minded users
Where HabitForge differs
→ Android only — nothing on iOS, web, or anywhere else
→ Deliberately minimal: no nudges beyond reminders, no voice, no analysis, no social
→ It tracks habits well but does only that — no anti-habit half, no decision help
→ No cross-device sync or ecosystem
Pick Loop Habit Tracker if…
• You're on Android and want a free, private, open-source tracker
• You like the forgiving "habit strength" model over rigid streaks
• On-device privacy with no account is a must
Pick HabitForge if…
• You want it beyond Android — on the web and on glasses
• You want the whole loop, not just tracking: nudges, voice, decision help, intervention ROI
• You want a system that also tells you when NOT to, and why
Where we’re honestly behind
– HabitForge is newly relaunched under this name — the original ran 2009–2016, and the revived experience is still being unified from separate surfaces
– No dedicated native iOS/Android habit app yet — it's web + smart glasses today (native mobile is in progress)
– The mature apps (Streaks, Habitify, Loop) have years more polish on the pure tracking basics
– Some pieces of the system currently live on their own screens rather than one cockpit — that unification is the roadmap