# Smart Posture vs Shellog

The clearest difference is update cadence: Shellog at every 4 days against Smart Posture's every 2 months. Shellog also leads on iOS requirement (16.4 vs 18.5). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Smart Posture ships an update every 2 months, Shellog every 4 days. The most recent releases landed on October 12, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Smart Posture | Shellog |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Size | 13 MB | 69 MB |
| Requires iOS | 18.5 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 12+ |
| Developer | [BERAT GOEKBERK CALISKAN](https://appshunter.io/developer/1820009277) | [Minseo Ko](https://appshunter.io/developer/6805713431) |

## What reviewers say

### Smart Posture

[App page](https://appshunter.io/ios/app/smart-posture/id6756135916)

**Features:** macOS Compatibility

**In-app purchases:** none


### Shellog

[App page](https://appshunter.io/ios/app/shellog-pilates-and-posture/id6805713429)

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

**In-app purchases:** none


## Frequently asked questions

### Is Smart Posture free?

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

### Is Shellog free?

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

### Do Smart Posture or Shellog have ads?

Neither Smart Posture nor Shellog shows ads.

### Which is updated more often, Smart Posture or Shellog?

Smart Posture ships an update every 2 months, and Shellog every 4 days. Most recently, Smart Posture was updated on October 12, 2026 and Shellog on October 14, 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.*