Comparison

Project50 vs 100Days

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

Head to head
About

Project50

This app guides users through a 50-day personal growth program to build lasting habits. Track daily tasks, monitor progress with insights, and share your journey for accountability. Start your transformation and reach your full potential.

Highlights
  • 50-day challenge program
  • Custom challenge creation
  • Daily task tracking
  • Interactive widgets
  • Journaling with notes and photos
  • Progress monitoring and insights
  • Progress sharing for accountability
  • Journal export
Features
Read full description

Join millions taking on the Project50 Challenge, a viral 50-day personal growth and lifestyle program designed to help you build lasting and life-changing habits and reset life. Project50 app helps you stay on track with your challenge by providing a simple and intuitive interface to track, manage and share your challenges. With the app, you can: - Start the official Project50 Challenge or create your own custom challenge - Track daily tasks in app or with the interactive widgets to build consistent routines - Add notes and photos to your daily tasks to record thoughts, reflections, or achievements - Monitor your progress across all challenges with detailed insights - Share your progress with others for extra accountability - Export the challenge journal on completion - Celebrate your milestones and build lasting habits that transform your life Start your transformation today with Project50 to reach your full potential. Privacy Policy: https://www.isomem.com/project50-privacy-policy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

100Days

Build better habits and achieve personal goals with daily check-ins, smart reminders, and visual progress tracking. This app provides the structure and motivation needed to stay consistent on your journey to transformation.

Highlights
  • Daily check-ins
  • Smart reminders
  • Visual progress tracking
  • Advanced analytics
  • Goal consistency
Features
Read full description

100Days – Build Better Habits, One Day at a Time Transform your life in 100 days with consistent action. 100Days keeps you accountable through daily check-ins, smart reminders, and powerful progress tracking. Whether you’re starting a fitness journey, learning a new skill, or simply aiming to stay consistent — this app gives you the structure and motivation to follow through. Features: • Daily Check-Ins: Log your progress and stay committed every day • Smart Reminders: Personalized notifications that keep you on track • Visual Progress Tracking: See your streaks grow and your goals come to life • Advanced Analytics: Understand your patterns and improve your consistency Start your 100-day transformation today. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Project504 screens
100Days4 screens

Verdict

The call

The clearest difference is update cadence: 100Days at daily against Project50's weekly. Project50's advantage is ratings volume (5 vs 1) and iOS requirement (16.0 vs 18.0). On price, rating, ads and in-app purchases 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. Project50 sells 3 in-app purchases, starting at $3.99 per 3 months and 100Days sells 3 in-app purchases, starting at $14.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Project50 against 5.0 for 100Days. That said, the two scores are not equally well evidenced: Project50 has 5 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Project50 ships an update weekly, 100Days daily. The most recent releases landed on June 11, 2026 and July 6, 2026 respectively.

Scorecard3 real differences · 6 level
Project50 versus 100Days: the parameters behind the verdict, then further details
ParameterProject50100Days
PriceFreeFree
Rating5.0 (5 ratings)5.0 (1 ratings)
Number of ratings5 — better1
Update frequencyWeeklyDaily — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad — betteriPhone
Requires iOS16.0 — better18.0
Further details — not scored
Size28 MB28 MB
Age rating4+4+
DeveloperISOMEM, Inc.Night House LLC

Customer experience

Project50

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

100Days

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Project50

Subscriptions2
  • Unlimited Access3 Days trial$3.993 Months
  • Unlimited Access3 Days trial$8.991 Year
One-time1
  • Unlimited Access$14.99
3 purchases

100Days

Subscriptions3
  • 100Days Pro$14.991 Month
  • 100Days Pro Annual1 Year trial$29.991 Year
  • 100Days Pro Annual$29.991 Year

Questions

Is Project50 free?
Project50 is free to download, with in-app purchases available.
Is 100Days free?
100Days is free to download, with in-app purchases available.
Which has better reviews, Project50 or 100Days?
Project50 and 100Days are both rated 5.0 out of 5 on the App Store, from 5 and 1 ratings respectively.
Do Project50 or 100Days have ads?
Neither Project50 nor 100Days shows ads.
Which is updated more often, Project50 or 100Days?
Project50 ships an update weekly, and 100Days daily. Most recently, Project50 was updated on June 11, 2026 and 100Days on July 6, 2026.

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