Comparison

21 Days vs 100 Push

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

Head to head
About

21 Days

Features
Read full description

Build habits that actually stick — 21 days at a time. 21 Days Challenge is a simple and powerful habit tracker designed for real, lasting change. Pick a goal, commit for 21 days, check in daily, and watch your streak grow one day at a time. Whether you want to drink more water, read every day, exercise, meditate, or build any daily routine, 21 Days Challenge keeps you focused, motivated, and consistent. KEY FEATURES • Multiple Habit Challenges Track several habits at once including health, fitness, learning, productivity, mindfulness, and more — all from one home screen. • Streaks & Milestones Watch your streak grow daily. Reach milestones at Day 7 and Day 14, and unlock badges as you build consistency. • Daily Journal Add quick notes, moods, or reflections with each check-in. Discover patterns and understand what works best for you. • Insightful Stats View beautiful charts showing completion rates, mood trends, and overall progress. • Smart Reminders Set custom reminders for each challenge at the times that work best for you. • Private by Default Your data stays on your device. Optional cloud sync is designed with privacy in mind. HOW IT WORKS 1. Pick your challenge — choose a suggested habit or create your own 2. Check in daily — track progress with a single tap 3. Build momentum — strengthen routines through consistency BUILT FOR EVERY KIND OF GROWTH • Health & fitness — water, sleep, movement • Learning & focus — reading, studying, skill-building • Productivity — deep work, discipline, routines • Mindfulness & wellness — meditation, gratitude, journaling • Creativity — writing, drawing, creating • Personal goals — anything that matters to you Start your first 21 days today with 21 Days Challenge — your habit tracker, streak builder, and daily journal for lasting change. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

100 Push

Features
Read full description

Most fitness apps give you endless options and zero follow-through. Quest gives you exactly one job a day — and makes you do it. Pick a challenge — push-ups, pull-ups, squats, sit-ups or plank — and Quest builds you toward a single-set goal using "grease the groove," the Soviet strength method built on frequent, easy, sub-maximal sets. No burnout, no gym, no guesswork. HOW IT WORKS • Tell us your current max • Quest prescribes 10 small sets a day, spread across your schedule • Train six days a week, rest one • Retest every 14 days — the plan adapts to your real progress • Hit your goal and celebrate, then pick your next challenge THE GOALS • Push-ups, squats, sit-ups — 100 in one set • Pull-ups — 50 in one set • Plank — 5 minutes in one hold BUILT TO KEEP YOU GOING • Smart daily reminders so a set is never far away • Streaks, badges and milestone celebrations • Perfect-form coaching for every exercise • Adaptive deloads when you need to back off • Everything stays on your device — no account, no feed, no noise Challenge a friend, hold the streak, and become the person who actually finished what they started. SUBSCRIPTION Quest is a subscription. ——— Subscription details 100 Push-Up Quest offers auto-renewing subscriptions: • Weekly — Ā£1.99 per week • Yearly — Ā£39.99 per year (includes a 3-day free trial) Payment is charged to your Apple ID at confirmation of purchase. Subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://karaberkay.github.io/quest-legal/privacy.html

Screenshots

21 Days4 screens
100 Push4 screens

Verdict

The call

The clearest difference is update cadence: 100 Push at weekly against 21 Days's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. 21 Days sells 4 in-app purchases, starting at $0.99 per month and 100 Push sells 2 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

21 Days ships an update every 3 weeks, 100 Push weekly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard1 real difference Ā· 5 level
21 Days versus 100 Push: the parameters behind the verdict, then further details
Parameter21 Days100 Push
PriceFreeFree
Update frequencyEvery 3 weeksWeekly — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.014.0 — better
Further details — not scored
Size46 MB15 MB
Age rating4+4+
DeveloperiLoma TechnologyHUSEYIN BERKAY KARAHACIOGLU

In-app purchases

4 purchases

21 Days

Subscriptions4
  • Pro Monthly$0.991 Month
  • Ultra Pro Monthly$0.991 Month
  • Pro Yearly$4.991 Year
Show 1 more
  • Ultra Pro Yearly$9.991 Year
2 purchases

100 Push

Subscriptions2
  • Weekly$1.997 Days
  • Yearly3 Days trial$39.991 Year

Questions

Is 21 Days free?
21 Days is free to download, with in-app purchases available.
Is 100 Push free?
100 Push is free to download, with in-app purchases available.
Do 21 Days or 100 Push have ads?
Neither 21 Days nor 100 Push shows ads.
Which is updated more often, 21 Days or 100 Push?
21 Days ships an update every 3 weeks, and 100 Push weekly. Most recently, 21 Days was updated on October 30, 2026 and 100 Push on October 31, 2026.

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