Tallyforge: 75 Day Challenge

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About this app

Tallyforge is a 75 day challenge tracker built around one screen: today's checklist. Open it, see "Day 23 of 75", tap each task as you finish it, and watch one more tally mark fill in. Doing a 66 day habit challenge, a 30 day challenge or a 21 day challenge instead? Pick that length when you start; all four are free. No account and no sign-in; your data stays on your phone.

Pick your plan in three taps
Choose a plan: a strict one with two 45-minute workouts (one outdoors), a diet you follow, no alcohol, a gallon of water, 10 pages of reading and a progress photo; a softer plan; a 75 medium challenge plan; or your own custom list for any habit challenge. Then choose 21, 30, 66 or 75 days. Every task and target can be changed, and the start date can be today, tomorrow or in the past.

A checklist that stays out of your way
• One tap marks a task done
• Water fills one glass at a time (ml or oz), or all at once
• Reading and workout minutes: one tap for your target, or type the real number
• Two workouts, with an Outdoor tag you can move
• Progress photo straight from your camera
• Optional daily journal

Forgot to log before bed?
Yesterday stays open until today ends, marked "Logged late", and your day can end at 3 am instead of midnight. In strict mode an unfinished day never fails silently: Tallyforge asks whether you forgot to log, want to restart, or want to switch to flexible mode. In flexible mode a missed day is marked and you keep going. The day count comes from your start date, so an update or a time zone change can't put you on the wrong day. A restart keeps every past attempt, with its photos, in your history.

Every day at a glance
The calendar shows one box for each day (75 for a 75 day challenge), in groups of five like tally marks: done, logged late, missed and today each look different. Tap a day to see its tasks, photo and journal. A month view is included.

Progress photos
A gallery labelled by day. Compare Day 1 with today side by side or with a slider, and share the comparison. A photo is only added to a share card when you choose it.

Stats, reminders and widget
Completion rate, current and best streak, total water, pages and workouts, a 14-day chart and your attempt history. Set a reminder for each task, get an 8 pm nudge only when tasks are still open, and mark simple tasks done from the notification. The Today widget shows your day number and tasks done.

Share your day
Make a "Day 23/75" card for a Story or a post with your tally and checklist.

Tallyforge Pro
Pro is a yearly subscription with a 7-day free trial for new subscribers, or a one-time lifetime purchase. You can cancel the subscription anytime in Google Play. Pro adds up to 5 challenges at once, unlimited custom tasks, a custom length from 7 to 365 days, a timelapse video and collage from your photos, advanced stats, several reminders per task, an interactive checklist widget and a tally widget, 4 share card styles without the watermark, accent colors, ZIP backup, CSV export and no ads. You can also unlock Pro for 24 hours by watching 2 short videos. The free version shows ads: banners on the Calendar, Stats and Settings screens and occasional full-screen ads at natural breaks. There are no ads in your photo gallery or Compare.

Tallyforge tracks your own challenge. It gives no medical or diet advice; talk to a doctor before an intense routine. Tallyforge is not affiliated with any challenge program or its creators.

Privacy policy: https://tinyfair.my.id/tallyforge/privacy/
Track a 75 or 66 day habit challenge: one-tap checklist, Day 23 of 75, photos
Updated on
Nov 6, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Location, App activity and 2 others
  • This app may collect these data types
    Location, Financial info and 3 others
  • Data is encrypted in transit
  • Data can’t be deleted

What’s new

First release of Tallyforge. Track a 75 day challenge with a one-tap daily checklist and a clear Day N of 75. Strict, softer, medium or custom plans, editable tasks and start date. Yesterday stays open until today ends, and strict mode always asks before a restart. 75-box tally calendar, progress photos with Day 1 compare, stats, reminders, Today widget and share cards. Pro (yearly with a 7-day free trial, or lifetime) adds timelapse, collage, more widgets and no ads.