# ZenTimer vs Migraine Sentry

The clearest difference is in-app purchases: ZenTimer at none against Migraine Sentry's 2. Migraine Sentry's advantage is iOS requirement (17.0 vs 26.2). On price, ads and device support there is nothing between them.

Both are free to download. Migraine Sentry sells 2 in-app purchases, starting at $4.99 per month. ZenTimer asks for nothing beyond the download.

## The numbers

| Metric | ZenTimer | Migraine Sentry |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (2 ratings)](https://appshunter.io/ios/app/migraine-sentry-forecast/id6789877577/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 days |
| Monetization | — | Freemium |
| Size | 12 MB | 16 MB |
| Requires iOS | 26.2 | **17.0** |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [takeshi kato](https://appshunter.io/developer/1884335472) | [KJC International Limited](https://appshunter.io/developer/6789877579) |

## What reviewers say

### ZenTimer

[App page](https://appshunter.io/ios/app/zentimer-align-your-mind/id6761677453)

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

**In-app purchases:** none


### Migraine Sentry

[App page](https://appshunter.io/ios/app/migraine-sentry-forecast/id6789877577)

This app forecasts migraine vulnerability by analyzing your personal health data, weather, and environmental factors. It provides daily and weekly outlooks, identifies personal triggers, and offers insights into effective treatments. Log migraines easily and receive a clinical report for your doctor.

**Highlights:** Personal migraine vulnerability forecast, Seven-day outlook based on weather and patterns, Passive analysis of sleep, HRV, heart rate, temperature, Personal trigger rankings, Plain-language explanations of changes, Fast logging from iPhone or Apple Watch, Clinical PDF report for doctors

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $4.99 | per month |
| Premium Annual | $29.99 | per year |


## Frequently asked questions

### Is ZenTimer free?

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

### Is Migraine Sentry free?

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

### Do ZenTimer or Migraine Sentry have ads?

Neither ZenTimer nor Migraine Sentry shows ads.

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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.*