# The 21 Days Challenge vs FutureMe

The clearest difference is review sentiment: The 21 Days Challenge at 92% against FutureMe's 28%. The 21 Days Challenge also leads on rating (4.7 vs 2.7) and ratings volume (571 vs 137). FutureMe's advantage is ads (none vs shown) and update cadence (every 9 days vs monthly). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. The 21 Days Challenge sells 2 in-app purchases, starting at $2.99 per month and FutureMe sells 11 in-app purchases, starting at $9.00 per year. Whichever you choose, the download price is not the number that matters.

The 21 Days Challenge holds the better App Store score, 4.7 against 2.7. Both are backed by a comparable volume of ratings — 571 and 137 respectively. Written reviews point the same way: 92% of The 21 Days Challenge's written reviews are positive against 28% of FutureMe's.

The 21 Days Challenge ships an update monthly, FutureMe every 9 days. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | The 21 Days Challenge | FutureMe |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (571 ratings)](https://appshunter.io/ios/app/the-21-days-challenge/id1485458184/reviews)** | [2.7 (137 ratings)](https://appshunter.io/ios/app/futureme/id1607047236/reviews) |
| Number of ratings | **571** | 137 |
| Positive reviews | **91.7% of reviews** | 27.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 127 MB | 17 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Kati Pereira](https://appshunter.io/developer/1697931524) | [Memories Group Pty Ltd](https://appshunter.io/developer/1523964786) |

## What reviewers say

### The 21 Days Challenge

[App page](https://appshunter.io/ios/app/the-21-days-challenge/id1485458184)

Build lasting habits and transform your life over 21 days with guided challenges. Track your progress, journal your thoughts, and customize your avatar with earned points. Discover new routines for health, productivity, and happiness.

**Highlights:** 21-day habit challenges, Habit tracking, Avatar customization, Daily journaling, Mood tracking, Community feed, Positive affirmations

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads month | $2.99 | per month |
| Remove Ads Year | $24.99 | per year |

**What reviewers like**

- 🚀 Simple and motivating
- 👍 Clean design and clear progress tracking
- 🤗 Genuinely helpful and enjoyable to use
- 💫 Positive impact on mental health and habits
- 🌟 Inspirational and encouraging messages

**What reviewers complain about**

- 🔍 Lack of search option in community challenges
- 🔀 Challenges disappear after creation, no way to find them
- 🤖 Too many ads interrupting the experience
- 🎨 App could use more customization options

**Reported bugs**

- Sharing created challenges does not work as expected
- Challenges sometimes disappear from the app

**Requested features**

- Add a search function for community challenges
- Allow users to save and revisit their own created challenges
- Provide more customization options for the app and user profile
- Introduce a widget for easier access to daily tasks


### FutureMe

[App page](https://appshunter.io/ios/app/futureme/id1607047236)

Write and send letters to yourself or others, scheduled for delivery years in the future. Track personal goals, send motivational messages, or reflect on your past. Enrich your messages with photos and videos for a more personal touch.

**Highlights:** Write letters to future self, Schedule future delivery dates, Send letters to friends and family, Enrich letters with photos and videos, Delivery day notifications, Edit letters after sending, Follow public letters

**Features:** Vision Pro support

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $9.00 | per year |
| Basic | $12.00 | per year |
| A La Carte | $1.00 | one-time |
| 1 Year Premium Membership | $2.99 | one-time |
| 1 Year Premium Membership | $4.99 | one-time |
| 1 Year Premium Membership | $9.99 | one-time |
| 1 Year Premium Membership | $24.99 | one-time |
| 5 Year Premium Membership | $24.99 | one-time |
| 10 Year Premium Membership | $49.99 | one-time |
| Lifetime Premium Membership | $99.99 | one-time |
| Lifetime Membership | $119.00 | one-time |

**What reviewers like**

- 💡 Great concept for self-reflection
- 💌 Long-time user loyalty
- 💖 Wholesome and emotional connection
- ✍️ Easy to use interface (historically)
- ✨ Keepsake for memories

**What reviewers complain about**

- 💸 Paywall for sending letters
- 😭 Loss of free functionality
- 📱 App now a web wrapper
- 😠 Ads everywhere
- 💔 Disappointment with recent changes

**Reported bugs**

- Cannot exit paywall screen
- App crashes when changing delivery date
- App freezes/crashes frequently
- Login issues between web and app
- Letters not sending/delivering

**Requested features**

- Revert to old UI/app design
- Allow voluntary contributions
- Add a drafts section
- Improve date selection for delivery
- Allow changing delivery date of existing letters


## Frequently asked questions

### Is The 21 Days Challenge free?

The 21 Days Challenge is free to download, with in-app purchases available.

### Is FutureMe free?

FutureMe is free to download, with in-app purchases available.

### Which has better reviews, The 21 Days Challenge or FutureMe?

The 21 Days Challenge is rated higher. The 21 Days Challenge averages 4.7 out of 5 from 571 ratings, while FutureMe averages 2.7 from 137 ratings.

### Do The 21 Days Challenge or FutureMe have ads?

The 21 Days Challenge shows ads; FutureMe does not.

### Which is updated more often, The 21 Days Challenge or FutureMe?

The 21 Days Challenge ships an update monthly, and FutureMe every 9 days. Most recently, The 21 Days Challenge was updated on October 29, 2026 and FutureMe on October 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*