# Valan vs Glucose Challenge

The clearest difference is in-app purchases: Valan at none against Glucose Challenge's 5. Valan also leads on iOS requirement (13.0 vs 15.1). Glucose Challenge's advantage is update cadence (every 2 weeks vs every 6 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Glucose Challenge sells 5 in-app purchases, starting at $5.99 per month. Valan asks for nothing beyond the download.

Valan ships an update every 6 weeks, Glucose Challenge every 2 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Valan | Glucose Challenge |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | — | Freemium |
| Size | 30 MB | 59 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [株式会社EPARKリラク&エステ](https://appshunter.io/developer/1096509136) | [Kengo Nomura](https://appshunter.io/developer/1895825185) |

## What reviewers say

### Valan

[App page](https://appshunter.io/ios/app/valan/id1620836080)

**Features:** macOS Compatibility

**In-app purchases:** none


### Glucose Challenge

[App page](https://appshunter.io/ios/app/glucose-challenge-carb-log/id6764540338)

This app helps you manage blood sugar through daily meals and actions without needing a sensor. It suggests personalized carb targets based on your weight goals and provides actionable habits derived from real user data to help prevent blood sugar spikes.

**Highlights:** Personalized daily carb targets, AI-powered meal carb estimation, Daily habit tracking, Glycation and Spike Score, Estimated HbA1c and diabetes risk, Meal suggestions based on goals, Weight and carb graphs

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic Plan | $5.99 | per month |
| Premium Coupon 50 | $5.99 | per month |
| Standard Plan | $9.99 | per month |
| Premium Coupon 25 | $9.99 | per month |
| Premium Plan | $11.99 | per month |


## Frequently asked questions

### Is Valan free?

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

### Is Glucose Challenge free?

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

### Do Valan or Glucose Challenge have ads?

Neither Valan nor Glucose Challenge shows ads.

### Which is updated more often, Valan or Glucose Challenge?

Valan ships an update every 6 weeks, and Glucose Challenge every 2 weeks. Most recently, Valan was updated on November 3, 2026 and Glucose Challenge 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.*