# No Sugar Challenge vs Sour

The clearest difference is in-app purchases: No Sugar Challenge at none against Sour's 2. Sour's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Sour sells 2 in-app purchases, starting at $8.99 per month. No Sugar Challenge asks for nothing beyond the download.

No Sugar Challenge ships an update every 2 months, Sour every 3 weeks. The most recent releases landed on October 11, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | No Sugar Challenge | Sour |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/no-sugar-challenge-tracker/id6763738356/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Ad-supported | — |
| Size | 40 MB | 52 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Seulki Eom](https://appshunter.io/developer/1718927408) | [Bartolomeo Steccanella](https://appshunter.io/developer/6775868763) |

## What reviewers say

### No Sugar Challenge

[App page](https://appshunter.io/ios/app/no-sugar-challenge-tracker/id6763738356)

This app helps you quit sugar with a simple daily check-in. Track your sugar-free streak, estimate sugar avoided, and identify personal triggers. Choose from various challenge lengths and customize your detox plan.

**Highlights:** Daily sugar-free check-in, Sugar-free streak counter, Estimated sugar avoided tracking, Customizable challenge plans, Weekly stats and insights, Evening reminders, Shareable progress cards

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

**In-app purchases:** none


### Sour

[App page](https://appshunter.io/ios/app/sour-quit-sugar-tracker/id6775868761)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sour Premium Monthly | $8.99 | per month |
| Sour Premium Yearly | $44.99 | per year |


## Frequently asked questions

### Is No Sugar Challenge free?

No Sugar Challenge is free to download, with no in-app purchases.

### Is Sour free?

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

### Do No Sugar Challenge or Sour have ads?

No Sugar Challenge shows ads; Sour does not.

### Which is updated more often, No Sugar Challenge or Sour?

No Sugar Challenge ships an update every 2 months, and Sour every 3 weeks. Most recently, No Sugar Challenge was updated on October 11, 2026 and Sour on October 5, 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.*