# 66 Challenge vs Wodspot72

The clearest difference is in-app purchases: Wodspot72 at none against 66 Challenge's 3. 66 Challenge's advantage is update cadence (every 5 days vs every 3 weeks) and iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. 66 Challenge sells 3 in-app purchases, starting at $3.99 per month. Wodspot72 asks for nothing beyond the download.

66 Challenge ships an update every 5 days, Wodspot72 every 3 weeks. Both last shipped on October 31, 2026.

## The numbers

| Metric | 66 Challenge | Wodspot72 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/66-challenge/id6758270405/reviews)** | — |
| Number of ratings | **5** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Monetization | Freemium | — |
| Size | 18 MB | 37 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Moad Ghajjate El Fal](https://appshunter.io/developer/1871890791) | [Achilleas Koletis](https://appshunter.io/developer/1888458470) |

## What reviewers say

### 66 Challenge

[App page](https://appshunter.io/ios/app/66-challenge/id6758270405)

Build lasting habits with a science-backed system designed to guide you through a 66-day journey. Track daily progress, visualize your transformation, and stay motivated with social features and achievements. Transform your life one habit at a time.

**Highlights:** Daily habit tracking, Progress visualization, Streak protection, Social feed and squads, Customizable reminders, Achievement badges

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $3.99 | per month |
| Pro Annual | $29.99 | per year |
| Pro Lifetime | $59.99 | one-time |


### Wodspot72

[App page](https://appshunter.io/ios/app/wodspot72/id6761260451)

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

**In-app purchases:** none


## Frequently asked questions

### Is 66 Challenge free?

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

### Is Wodspot72 free?

Wodspot72 is free to download, with no in-app purchases.

### Do 66 Challenge or Wodspot72 have ads?

Neither 66 Challenge nor Wodspot72 shows ads.

### Which is updated more often, 66 Challenge or Wodspot72?

66 Challenge ships an update every 5 days, and Wodspot72 every 3 weeks. Most recently, 66 Challenge was updated on October 31, 2026 and Wodspot72 on October 31, 2026.

---

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