# Bye Bye Slouch vs Smart Posture

The clearest difference is in-app purchases: Smart Posture at none against Bye Bye Slouch's 1. Smart Posture also leads on ads (none vs shown). Bye Bye Slouch's advantage is update cadence (every 3 days vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Bye Bye Slouch sells 1 one-off in-app purchase. Smart Posture asks for nothing beyond the download.

Bye Bye Slouch ships an update every 3 days, Smart Posture every 2 months. The most recent releases landed on September 22, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Bye Bye Slouch | Smart Posture |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 2 months |
| Size | 6 MB | 13 MB |
| Requires iOS | **17.6** | 18.5 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 12+ |
| Developer | [Karin Kanemura](https://appshunter.io/developer/1842997632) | [BERAT GOEKBERK CALISKAN](https://appshunter.io/developer/1820009277) |

## What reviewers say

### Bye Bye Slouch

[App page](https://appshunter.io/ios/app/bye-bye-slouch/id6755031803)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 無音version解禁 | $1.99 | one-time |


### Smart Posture

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Bye Bye Slouch free?

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

### Is Smart Posture free?

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

### Do Bye Bye Slouch or Smart Posture have ads?

Bye Bye Slouch shows ads; Smart Posture does not.

### Which is updated more often, Bye Bye Slouch or Smart Posture?

Bye Bye Slouch ships an update every 3 days, and Smart Posture every 2 months. Most recently, Bye Bye Slouch was updated on September 22, 2026 and Smart Posture on June 1, 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.*