# CarlOs vs Sanpo

The clearest difference is in-app purchases: CarlOs at none against Sanpo's 1. CarlOs also leads on iOS requirement (13.4 vs 15.0). Sanpo's advantage is update cadence (fortnightly vs every 5 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Sanpo sells 1 in-app purchase, starting at $4.99 per month. CarlOs asks for nothing beyond the download.

CarlOs ships an update every 5 weeks, Sanpo fortnightly. The most recent releases landed on October 9, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | CarlOs | Sanpo |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Fortnightly** |
| Monetization | Free | — |
| Size | 33 MB | 30 MB |
| Requires iOS | **13.4** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [ARROW GENERIQUES](https://appshunter.io/developer/1037851142) | [le duc](https://appshunter.io/developer/1444889822) |

## What reviewers say

### CarlOs

[App page](https://appshunter.io/ios/app/carlos/id1442806830)

This app helps you understand your daily calcium needs and track your dietary intake to support bone health. It provides practical information on bone health, calcium, and osteoporosis. All information is for guidance only and not a substitute for medical advice.

**Highlights:** Calculate daily calcium needs, Track dietary calcium intake, Monitor calcium intake evolution, Access bone health information, Learn about osteoporosis and risk factors

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

**In-app purchases:** none


### Sanpo

[App page](https://appshunter.io/ios/app/sanpo-interval-walking/id6806635111)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sanpo Pro | $4.99 | per month |


## Frequently asked questions

### Is CarlOs free?

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

### Is Sanpo free?

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

### Do CarlOs or Sanpo have ads?

Neither CarlOs nor Sanpo shows ads.

### Which is updated more often, CarlOs or Sanpo?

CarlOs ships an update every 5 weeks, and Sanpo fortnightly. Most recently, CarlOs was updated on October 9, 2026 and Sanpo on October 8, 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.*