Comparison

75 Days vs Otter Stretch

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

Head to head
About

75 Days

Embark on a 75-day journey to build mental toughness, discipline, and achieve personal growth. This app guides you through daily exercise, diet planning, hydration, reading, and progress tracking to transform your life.

Highlights
  • 75-day transformative journey
  • Daily exercise (two 45-min sessions, one outdoors)
  • Customizable diet plan (no alcohol/cheat meals)
  • Daily water intake tracking (1 gallon)
  • Daily reading habit (10 pages non-fiction)
  • Daily progress photos
  • Daily progress tracking
Features
Read full description

Welcome to 75 Days - Transform Challenge, the ultimate self-improvement app designed to guide you through a transformative 75-day journey. This program is meticulously crafted to help you build mental toughness, enhance discipline, and achieve lasting personal growth. Through a structured regimen, you will push your limits and unlock your full potential. Are you ready to take on the challenge and transform your life? 75 Days of Life-Changing Commitment The 75 Days - Transform Challenge is not just another fitness app. It's a rigorous mental and physical challenge that will test your limits and redefine your boundaries. Over the next 75 days, you will embark on a journey that demands unwavering commitment and resilience. This streak is designed to cultivate mental toughness and instill discipline in every aspect of your life. Exercise Twice a Day Physical fitness is a cornerstone of the 75 Days - Transform Challenge. You will be required to engage in two 45-minute exercise sessions daily, with one of them being outdoors. This routine not only promotes physical health but also encourages you to connect with nature and break free from the monotony of indoor workouts. Whether it's a brisk walk in the park, a jog around the neighborhood, or an outdoor yoga session, the fresh air and natural surroundings will invigorate your mind and body. Make and Follow a Diet Plan Nutrition plays a crucial role in your transformation journey. The app allows you the flexibility to create and follow your own diet plan, tailored to your unique needs and goals. However, there are two non-negotiable rules: no alcohol and no cheat meals. This disciplined approach to eating will help you develop healthier habits, shed unwanted pounds, and fuel your body with the nutrients it needs to perform at its best. Stay Hydrated with Daily Water Intake Hydration is key to maintaining optimal health and performance. As part of the 75 Days - Transform Challenge, you will be required to drink a gallon of water every day. Staying hydrated supports digestion, enhances cognitive function, and improves your overall well-being. The app will help you track your daily water intake, ensuring you meet this essential requirement. Develop a Reading Habit Personal growth is not limited to physical fitness. The 75 Days - Transform Challenge encourages you to develop a habit of reading by requiring you to read 10 pages of a non-fiction book every day. This practice will expand your knowledge, stimulate your mind, and inspire you to think differently. Take a Daily Picture of Yourself Tracking your progress visually is a powerful motivator. The app prompts you to take a daily picture of yourself, allowing you to see the physical changes over the 75 days. These photos will serve as a visual diary of your journey, capturing the results of your hard work and dedication. They will remind you of how far you've come and motivate you to keep pushing forward. Track Your Daily Progress Consistency is key to success in the 75 Days - Transform Challenge. The app provides a comprehensive progress tracking system, allowing you to monitor your adherence to the program's requirements. From workouts and diet adherence to water intake and reading, you can log your daily activities and see your progress at a glance. This feature keeps you accountable and ensures you stay on track throughout the 75 days. Benefits of the Program 1. Experience improved mental toughness 2. Better physical health 3. Increased discipline 4. Enhanced focus 75 Days - Transform Challenge is more than just an app; it's a comprehensive guide to personal transformation. Are you ready to take the first step towards a stronger, more disciplined you? Download the app today and start your journey to becoming the best version of yourself. The challenge awaits!

About

Otter Stretch

This app gamifies stretching by having an otter swim through kelp based on your flexibility. It's designed for beginners, focusing on holding stretches steadily rather than depth. Turn screen time into stretch time with a built-in app locker.

Highlights
  • Gamified stretching with otter character
  • Camera-based range of motion tracking
  • App Lock to turn screen time into stretch time
  • Customizable routines and scenes
  • Progress tracking and range growth charts
  • Privacy-focused, on-device processing
Features
Read full description

Make stretching a habit. Otter Stretch turns a few minutes of stretching into a game. Prop your phone, get into position, and your stretch steers an otter swimming through the kelp. Hold steady and it glides through. BUILT FOR STIFF, NOT FLEXIBLE Can't touch your toes? Haven't stretched in years? This is for you. Otter Stretch measures your range when you start and sets every round to fit it. You're scored on steadiness, never on how far you bend, so there's no reason to push into pain for points. That is also what the research finds. Held for about thirty seconds a few times a day, a muscle is measurably looser within weeks, and a gentle hold gains as much as a hard one. Sources at https://otterstretch.com/research. TURN SCREEN TIME INTO STRETCH TIME With App Lock, the apps you pick stay locked until you've stretched. Stretch for 1, 5 or 10 minutes to open them for 10 minutes, an hour or the rest of the day. Time in the stretch is what counts, not how far you go. Can't stretch right now? A short wait always lets you in. App Lock uses Apple's Screen Time, and Otter Stretch never sees which apps you picked. 30 STRETCHES. UNDER 10 MINUTES. HANDS-FREE. - Standing, on a chair or on the floor - Hamstrings, hips, back, shoulders, neck, calves and more - Routines that run one stretch after another, no tapping - Body view: a plain figure and a steadiness bar, if you'd rather skip the game WATCH YOUR RANGE GROW Your camera measures your range and charts it over time, so you can see real progress instead of guessing. Every session is measured. Every two weeks you get a fresh reading built from your last five, so one stiff day can't knock you back. MAKE IT YOURS Play in six scenes, from a coral reef to outer space, and dress your otter in hats, scarves and more. - Streaks that forgive a rest day - Share your streak, or send a routine to a friend as a link - No account, no login PRIVATE BY DESIGN Otter Stretch follows your position with the camera. Video never leaves your phone, and it is never recorded. Pose tracking runs entirely on the device. FREE TO START Two stretches are free for good: the toe touch and the side bend. Otter Stretch Full opens the other 23, App Lock and the Den. Make one payment for the lifetime, which covers everything in the app today and every update to it, or try the monthly plan free for 3 days. Subscription details: Payment is charged to your Apple ID account at confirmation of purchase, after any free trial ends. The subscription renews automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Purchases restore through your Apple ID; your history stays on this device. Otter Stretch is not medical advice. Stretch within a comfortable range and stop if you feel pain. If you have an injury or medical condition, check with a doctor first. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: https://otterstretch.com/privacy Support: https://otterstretch.com/support

Screenshots

75 Days4 screens
Otter Stretch4 screens

Verdict

The call

The clearest difference is review sentiment: Otter Stretch at 100% against 75 Days's 0%. Otter Stretch also leads on rating (5.0 vs 4.5) and in-app purchases (none vs 1). 75 Days's advantage is ratings volume (16 vs 4). On price, monetization model, device support and iOS requirement 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. 75 Days sells 1 one-off in-app purchase. Otter Stretch asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Otter Stretch holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 16 and 4 respectively. Written reviews point the same way: 0% of 75 Days's written reviews are positive against 100% of Otter Stretch's.

UpkeepUpdate frequency

75 Days ships an update fortnightly, Otter Stretch every 2 days. Both last shipped on October 24, 2026.

Scorecard6 real differences · 4 level
75 Days versus Otter Stretch: the parameters behind the verdict, then further details
Parameter75 DaysOtter Stretch
PriceFreeFree
Rating4.5 (16 ratings)5.0 (4 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings16 — better4
Update frequencyFortnightlyEvery 2 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size35 MB63 MB
Age rating12+4+
DeveloperAli MuradMASOFT LLC

Customer experience

75 Days

All ratings16 ratings
Positive81.3%
Neutral12.5%
Negative6.3%
Written reviews2 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

Otter Stretch

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

75 Days

One-time1
  • Remove Ads$5.99
None

Otter Stretch

No in-app purchases

Questions

Is 75 Days free?
75 Days is free to download, with in-app purchases available.
Is Otter Stretch free?
Otter Stretch is free to download, with no in-app purchases.
Which has better reviews, 75 Days or Otter Stretch?
Otter Stretch is rated higher. 75 Days averages 4.5 out of 5 from 16 ratings, while Otter Stretch averages 5.0 from 4 ratings.
Do 75 Days or Otter Stretch have ads?
75 Days shows ads; Otter Stretch does not.
Which is updated more often, 75 Days or Otter Stretch?
75 Days ships an update fortnightly, and Otter Stretch every 2 days. Most recently, 75 Days was updated on October 24, 2026 and Otter Stretch on October 24, 2026.

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