# 75 Soft Challenge™ Official vs Arc

The clearest difference is update cadence: Arc at every 4 days against 75 Soft Challenge™ Official's every 10 days. 75 Soft Challenge™ Official's advantage is iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 75 Soft Challenge™ Official sells 5 in-app purchases, starting at $1.99 per month and Arc sells 2 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

75 Soft Challenge™ Official ships an update every 10 days, Arc every 4 days. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 75 Soft Challenge™ Official | Arc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (50 ratings)](https://appshunter.io/ios/app/75-soft-challenge-official/id6737217284/reviews)** | — |
| Number of ratings | **50** | — |
| Positive reviews | 73.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 192 MB | 76 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Big TLK LLC](https://appshunter.io/developer/1817222815) | [Hauer Studios Inc](https://appshunter.io/developer/1774960396) |

## What reviewers say

### 75 Soft Challenge™ Official

[App page](https://appshunter.io/ios/app/75-soft-challenge-official/id6737217284)

This app guides users through a customizable health challenge focused on building positive habits like movement, nutritious eating, and hydration. It offers a flexible approach to fitness, encouraging users to feel good about their progress without strict rules.

**Highlights:** Customizable challenge goals, Habit tracking, Progress monitoring, Hydration tracking, Nutrition guidance, Movement tracking

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 75 Soft Unlimited | $1.99 | per month |
| 75 Soft Unlimited – Annual | $5.99 | per year |
| Annual | $6.99 | per year |
| 75 Soft Unlimited | $9.99 | per year |
| 75 Unlimited | $14.99 | per year |

**What reviewers like**

- 👍 Easy to use
- 🚀 Customizable challenge
- 💡 Helpful for building healthy habits
- 👍 Friendly and encouraging
- 👍 Clean and simple design

**What reviewers complain about**

- 🐛 App crashes when trying to upload data
- 🔍 Lacks ability to upload progress photos

**Reported bugs**

- App crashes when trying to upload data

**Requested features**

- Add ability to upload progress photos
- Improve app stability and reliability


### Arc

[App page](https://appshunter.io/ios/app/arc-habit-challenges/id6747728317)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Arc Weekly Access | $2.99 | per 7 days |
| Arc Annual Access | $34.99 | per year |


## Frequently asked questions

### Is 75 Soft Challenge™ Official free?

75 Soft Challenge™ Official is free to download, with in-app purchases available.

### Is Arc free?

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

### Do 75 Soft Challenge™ Official or Arc have ads?

Neither 75 Soft Challenge™ Official nor Arc shows ads.

### Which is updated more often, 75 Soft Challenge™ Official or Arc?

75 Soft Challenge™ Official ships an update every 10 days, and Arc every 4 days. Most recently, 75 Soft Challenge™ Official was updated on November 4, 2026 and Arc 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.*