# I vs 75 Days Challenge

The clearest difference is in-app purchases: I at none against 75 Days Challenge's 18. I also leads on iOS requirement (8.0 vs 18.0). On price there is nothing between them.

Both are free to download. 75 Days Challenge sells 18 in-app purchases, starting at $1.99 per 7 days. I asks for nothing beyond the download.

## The numbers

| Metric | I | 75 Days Challenge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (689 ratings)](https://appshunter.io/ios/app/75-days-challenge-better/id6667095733/reviews)** |
| Number of ratings | — | **689** |
| Positive reviews | — | 57.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | — | Yes |
| Update frequency | — | Every 2 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 3 MB | 91 MB |
| Requires iOS | **8.0** | 18.0 |
| Devices | — | **iPhone** |
| Age rating | 4+ | 4+ |
| Developer | [shingo kamei](https://appshunter.io/developer/1256845824) | [Alexander Parnev](https://appshunter.io/developer/1645934480) |

## What reviewers say

### I

[App page](https://appshunter.io/ios/app/i-flat/id1077653950)

**In-app purchases:** none


### 75 Days Challenge

[App page](https://appshunter.io/ios/app/75-days-challenge-better/id6667095733)

This app helps you build lasting habits by tracking your progress on custom challenges. Set flexible durations, log daily progress with photos and notes, and monitor weight trends. Stay motivated with home screen widgets to maintain your streaks.

**Highlights:** Custom challenges, Flexible durations, Home Screen widgets, Photo progress & compare, Notes on every entry, Weight tracking & summaries

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

**In-app purchases (18)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access (Weekly) | $1.99 | per 7 days |
| Full Access | $2.99 | per month |
| Full Access (Monthly) | $3.99 | per month |
| Pro | $5.99 | per 7 days |
| Full Access (Weekly) | $5.99 | per 7 days |
| Full Access | $5.99 | per month |
| Full Access (Monthly) | $9.99 | per month |
| Full Access (Annual) | $19.99 | per year |
| Full Access (Annual) | $29.99 | per year |
| Full access | $39.99 | per year |
| Full Access (Annual) | $49.99 | per year |
| Pro | $59.99 | per year |
| Small Tip | $0.99 | one-time |
| Medium Tip | $2.99 | one-time |
| Lifetime Premium | $5.99 | one-time |
| Lifetime Pro | $9.99 | one-time |
| Lifetime Premium | $19.99 | one-time |
| Lifetime Pro | $59.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 💡 Customizable challenges
- 🚀 Straightforward layout
- 🔒 Lifetime premium access

**What reviewers complain about**

- 🐛 Glitchy and buggy
- 🚫 Limited features for paid version
- 💰 Not truly free, requires payment
- 🤔 Lack of advanced tracking features

**Reported bugs**

- Settings page freezes app
- Checklist widget doesn't update automatically
- App gets stuck on day 6 and won't unlock
- Camera function is unreliable

**Requested features**

- Add ability to start over at day 1 instead of resetting whole challenge
- Integrate with friends/social features
- Expand tracking capabilities beyond just weight and photos
- Add more customization options


## Frequently asked questions

### Is I free?

I is free to download, with no in-app purchases.

### Is 75 Days Challenge free?

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

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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.*