# Posture Nudge vs Migraine Attack Diary

The clearest difference is in-app purchases: Posture Nudge at none against Migraine Attack Diary's 3. Migraine Attack Diary's advantage is update cadence (every 4 days vs every 9 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Migraine Attack Diary sells 3 in-app purchases, starting at $0.99 per month. Posture Nudge asks for nothing beyond the download.

Posture Nudge ships an update every 9 months, Migraine Attack Diary every 4 days. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Posture Nudge | Migraine Attack Diary |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 4 days** |
| Size | 18 MB | 42 MB |
| Requires iOS | **16.1** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [佳宇 刘](https://appshunter.io/developer/1782912378) | [慧 刘](https://appshunter.io/developer/1857113525) |

## What reviewers say

### Posture Nudge

[App page](https://appshunter.io/ios/app/posture-nudge-upright/id6752515971)

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

**In-app purchases:** none


### Migraine Attack Diary

[App page](https://appshunter.io/ios/app/migraine-attack-diary/id6761049092)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $0.99 | per month |
| Yearly Pro | $3.99 | per year |
| Lifetime Pro | $4.99 | one-time |


## Frequently asked questions

### Is Posture Nudge free?

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

### Is Migraine Attack Diary free?

Migraine Attack Diary is free to download, with in-app purchases available.

### Do Posture Nudge or Migraine Attack Diary have ads?

Neither Posture Nudge nor Migraine Attack Diary shows ads.

### Which is updated more often, Posture Nudge or Migraine Attack Diary?

Posture Nudge ships an update every 9 months, and Migraine Attack Diary every 4 days. Most recently, Posture Nudge was updated on October 28, 2026 and Migraine Attack Diary on October 25, 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.*