Comparison

Day75 vs Grind75

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Day75

This app guides users through a 75-day challenge focused on building discipline and mental toughness. It provides tools to track daily tasks like workouts, diet, water intake, and reading, with options for custom challenges and progress visualization.

Highlights
  • Daily task checklist
  • Smart countdown timer
  • Water intake tracker
  • Reading log
  • Progress photo journal
  • Challenge analytics
  • Custom challenge durations
Features
Read full description

A 75-day mental toughness challenge that transforms your discipline one day at a time. This isn't about motivation—it's about keeping promises to yourself. Track your journey with an app that keeps you accountable. Complete two 45-minute workouts (one outdoors), follow your chosen diet, drink a gallon of water, read at least 10 pages, and take a progress photo. Every single day, for 75 days. CORE FEATURES - Daily checklist for all 6 tasks - Smart countdown timer to your daily reset - Water intake tracker (128 oz daily goal default) - Reading log with book title and page counter - Progress photo journal with side-by-side comparisons - 75-day calendar with monthly and weekly views - Daily reminders, milestone alerts, and streak notifications - Challenge variants: Hard, Medium, and Soft modes - Daily notes to journal your progress - Challenge analytics and completion stats - Share your achievements with custom progress images PREMIUM FEATURES - Cloud photo backup and sync across devices - Up to 5 photos per day - Custom challenge durations - Create your own challenge rules and tasks - Edit previous day entries - Adjust start dates retroactively - Photo timelapse generation with export options - Health snapshot and trends dashboard - Export challenge data (CSV format) - Downloadable PDF completion certificate - Unlimited grace periods for missed days - Unlimited challenge history - Access to community workout links - Group challenges with friends THE CHALLENGE: - Two 45-minute workouts daily (one must be outdoors) - Follow a diet of your choice (no cheat meals, no alcohol) - Drink 1 gallon (128 oz) of water - Read at least 10 pages of a non-fiction book (no audiobooks) - Take a daily progress photo - Miss any task? Restart from Day 1 Built for those who understand that discipline isn't negotiable. Whether you're tackling the full 75 days in Hard mode, easing in with Medium or Soft mode, or building a completely custom challenge—this app tracks every task, logs every check mark, and holds you accountable when it's easier to quit. PERFECT FOR: - Building consistent daily habits - Mental toughness training - Fitness transformations - Accountability partners - Challenge communities - Personal development journeys Track your water intake, log your reading, store your progress photos, generate a time-lapse of your transformation, and watch your discipline compound—one day at a time. This app won't motivate you. It'll just show you exactly where you stand. The rest is up to you. Ready to commit? Download now and start your 75-day transformation. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://day75.com/privacy/

About

Grind75

This app helps you build discipline and stay consistent with self-improvement challenges like 75 Hard or 75 Soft. It offers flexible tracking for various habits, multiple challenge modes, and progress visualization to support your personal growth journey without rigid rules.

Highlights
  • Customizable challenge lengths
  • Multiple challenge modes (Hard, Medium, Soft, Parent)
  • Habit tracking for fitness, water, reading, diet, and more
  • Progress photo and milestone tracking
  • Flexible system with pause and resume options
  • Health integration for step tracking
  • Shareable transformation cards
Features
Read full description

Grind75 is a flexible habit tracker and challenge tracker designed to help you complete 75 Hard, 75 Soft, or any custom self-improvement challenge. Build discipline, stay consistent, and track your daily habits—without rigid rules or burnout. Whether you're working on fitness, routine building, or personal growth, Grind75 adapts to your lifestyle. Start Any Challenge Choose from 21, 30, 60, 75, or 100-day challenges—or create your own custom challenge tailored to your goals. Build routines that work for you. Multiple Challenge Modes ● Hard Mode – for strict 75 Hard-style discipline ● Medium Mode – balanced and structured ● Soft Mode – sustainable and flexible habits ● Parent Mode – designed for busy parents Parent Mode – Built for Real Life Stay consistent while balancing responsibilities: ● Realistic daily goals ● Grace days ● Audiobook-friendly reading ● Quiet-time tracking Habit Tracker for Daily Consistency Track habits like: ● Workouts & fitness ● Water intake (with reminders) ● Reading (books or audiobooks) ● Diet & nutrition ● Outdoor activity ● Daily steps (Health integration) ● Custom habits Stay accountable, build streaks, and improve every day. Track Progress & Transformation ● Capture progress photos ● Compare before & after results ● Track milestones throughout your challenge ● View past challenges with stats and insights Stay Motivated ● Generate shareable transformation cards ● Completion recognition screen for finished challenges ● Celebrate wins and milestones ● Stay consistent through your journey Flexible & Forgiving System Missed a day? Keep going. ● Restart anytime ● Pause, stop, or resume your challenge ● Focus on progress over perfection Smart Features That Make It Easy ● Browse 21 ready-made tasks across 6 categories ● Add, edit, delete, or reorder tasks ● Swipe to manage your habits ● Automatic step tracking with Health integration ● Set multiple water reminders ● Localized water units (oz / mL) No Subscriptions. No Ads. Grind75 keeps it simple: ● Start free ● Unlock everything with a one-time purchase ● No ads ● No subscriptions ● Just results Why Grind75? ● Perfect for 75 Hard & 75 Soft challenges ● Flexible habit tracking system ● Designed for real-life consistency ● Built for discipline without burnout Your challenge. Your rules. Let’s grind.

Screenshots

Day754 screens
Grind754 screens

Verdict

The call

The clearest difference is in-app purchases: Grind75 at none against Day75's 2. Grind75 also leads on ads (none vs shown) and ratings volume (22 vs 2). Day75's advantage is iOS requirement (16.4 vs 18.0). On price, rating, update cadence and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Day75 sells 2 in-app purchases, starting at $3.99 per month. Grind75 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Day75 against 5.0 for Grind75. That said, the two scores are not equally well evidenced: Grind75 has 22 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Day75 ships an update every 2 weeks, Grind75 monthly. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.

Scorecard5 real differences · 5 level
Day75 versus Grind75: the parameters behind the verdict, then further details
ParameterDay75Grind75
PriceFreeFree
Rating5.0 (2 ratings) — better5.0 (22 ratings)
Positive reviews—100.0% of reviews
Number of ratings222 — better
Update frequencyEvery 2 weeks — betterMonthly
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, Apple WatchiPhone, iPad
Requires iOS16.4 — better18.0
Further details — not scored
Size117 MB21 MB
Age rating4+4+
DeveloperOKCOKER LLCPriya Pappachen Yohannan

Customer experience

Day75

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Grind75

All ratings13 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews9 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Day75

Subscriptions2
  • Day75 Monthly7 Days trial$3.991 Month
  • Day75 Yearly7 Days trial$29.991 Year
None

Grind75

No in-app purchases

Questions

Is Day75 free?
Day75 is free to download, with in-app purchases available.
Is Grind75 free?
Grind75 is free to download, with no in-app purchases.
Which has better reviews, Day75 or Grind75?
Day75 is rated higher. Day75 averages 5.0 out of 5 from 2 ratings, while Grind75 averages 5.0 from 22 ratings.
Do Day75 or Grind75 have ads?
Day75 shows ads; Grind75 does not.
Which is updated more often, Day75 or Grind75?
Day75 ships an update every 2 weeks, and Grind75 monthly. Most recently, Day75 was updated on October 3, 2026 and Grind75 on October 7, 2026.

Other comparisons