# 75 Day Challenge vs Winter Arc by Coldstart

The clearest difference is ads: 75 Day Challenge at none against Winter Arc by Coldstart's shown. 75 Day Challenge also leads on device support (3 vs 1). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. 75 Day Challenge sells 7 in-app purchases, starting at $1.99 per 7 days and Winter Arc by Coldstart sells 7 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on October 1, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 75 Day Challenge | Winter Arc by Coldstart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (94 ratings)](https://appshunter.io/ios/app/winter-arc-by-coldstart/id6736709926/reviews)** |
| Number of ratings | — | **94** |
| Positive reviews | 9.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | Every 6 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 38 MB | 71 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Nadezhda Tereshkova](https://appshunter.io/developer/1588884701) | [TheRoaming, Inc](https://appshunter.io/developer/1660099104) |

## What reviewers say

### 75 Day Challenge

[App page](https://appshunter.io/ios/app/75-day-challenge/id1590868775)

This app guides users through a 75-day mental toughness challenge. It helps build consistency by tracking daily tasks and offers customization for diet and workout preferences. Users can also document their progress with photo galleries.

**Highlights:** 75-day mental toughness challenge, Track 6 daily non-negotiable tasks, Customizable diet and workout plans, Built-in habit tracking, Add custom habits, Full 75-day calendar view, Progress photo gallery

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 75 Day Challenge Premium | $1.99 | per 7 days |
| 75 Day Challenge Premium | $4.99 | per month |
| 75 Day Challenge | $4.99 | per month |
| 75 Day Challenge Premium | $9.99 | per year |
| 75 Day Challenge Premium | $19.99 | per 3 months |
| 75 Day Challenge Premium | $29.99 | per year |
| 75 Day Challenge Premium | $9.99 | one-time |


### Winter Arc by Coldstart

[App page](https://appshunter.io/ios/app/winter-arc-by-coldstart/id6736709926)

This app helps you achieve personal growth goals with a unique contract system. Create daily, weekly, or monthly tasks, sign and share your commitments, and track your progress with reminders and social sharing. Unlock unlimited tasks and notifications with a pro upgrade.

**Highlights:** Create custom or premade task contracts, Set daily, weekly, or monthly tasks, Sign and share goal contracts, Track progress with checklists, Receive reminders and inspirational quotes, Share progress on social media

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Winter Arc Pro | $2.99 | per month |
| Winter Arc Pro (Monthly) | $5.99 | per month |
| Winter Arc Pro Weekly | $9.99 | per 7 days |
| Winter Arc Pro (6 months) | $14.99 | per 6 months |
| Winter Arc Pro (Annual) | $24.99 | per year |
| Winter Arc Pro (Six Months) | $24.99 | per 6 months |
| Winter Arc Pro Annual | $49.99 | per year |


## Frequently asked questions

### Is 75 Day Challenge free?

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

### Is Winter Arc by Coldstart free?

Winter Arc by Coldstart is free to download, with in-app purchases available.

### Do 75 Day Challenge or Winter Arc by Coldstart have ads?

Winter Arc by Coldstart shows ads; 75 Day Challenge does not.

### Which is updated more often, 75 Day Challenge or Winter Arc by Coldstart?

75 Day Challenge ships an update every 6 weeks, and Winter Arc by Coldstart every 6 weeks. Most recently, 75 Day Challenge was updated on October 1, 2026 and Winter Arc by Coldstart on October 25, 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.*