# Feverchart vs Ondi

The clearest difference is in-app purchases: Feverchart at none against Ondi's 1. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Ondi sells 1 one-off in-app purchase. Feverchart asks for nothing beyond the download.

## The numbers

| Metric | Feverchart | Ondi |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Weekly |
| Size | 4 MB | 10 MB |
| Requires iOS | 17.4 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Christoph Pageler](https://appshunter.io/developer/933638039) | [Blue Flame Games](https://appshunter.io/developer/523824138) |

## What reviewers say

### Feverchart

[App page](https://appshunter.io/ios/app/feverchart/id6754285683)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Feverchart free?

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

### Is Ondi free?

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

### Do Feverchart or Ondi have ads?

Neither Feverchart nor Ondi shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*