# Ondi vs Throb

The clearest difference is update cadence: Ondi at weekly against Throb's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Ondi sells 1 one-off in-app purchase and Throb sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Ondi ships an update weekly, Throb every 3 weeks. Both last shipped on October 17, 2026.

## The numbers

| Metric | Ondi | Throb |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Size | 10 MB | 2 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 12+ |
| Developer | [Blue Flame Games](https://appshunter.io/developer/523824138) | [Evatech Innovations,TOO](https://appshunter.io/developer/1712099707) |

## What reviewers say

### Ondi

[App page](https://appshunter.io/ios/app/ondi-private-period-tracker/id6760896784)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cyla Premium | $7.99 | one-time |


### Throb

[App page](https://appshunter.io/ios/app/throb-migraine-diary-tracker/id6780502995)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Throb Lifetime Unlock | $12.99 | one-time |


## Frequently asked questions

### Is Ondi free?

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

### Is Throb free?

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

### Do Ondi or Throb have ads?

Neither Ondi nor Throb shows ads.

### Which is updated more often, Ondi or Throb?

Ondi ships an update weekly, and Throb every 3 weeks. Most recently, Ondi was updated on October 17, 2026 and Throb on October 17, 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.*