# ephira vs Ondi

The clearest difference is in-app purchases: ephira at none against Ondi's 1. ephira also leads on iOS requirement (15.1 vs 17.0). Ondi's advantage is update cadence (weekly vs every 6 months). On price, ads and device support there is nothing between them.

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

ephira ships an update every 6 months, Ondi weekly. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | ephira | Ondi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/ephira/id6741593838/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Weekly** |
| Monetization | Free | — |
| Size | 34 MB | 10 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 12+ |
| Developer | [Alexander Ulbrich](https://appshunter.io/developer/1794821380) | [Blue Flame Games](https://appshunter.io/developer/523824138) |

## What reviewers say

### ephira

[App page](https://appshunter.io/ios/app/ephira/id6741593838)

This period tracker prioritizes your privacy by encrypting all data locally on your device. Log your cycle, symptoms, moods, and medications with confidence, knowing your information is secure and can be protected with biometrics or a password.

**Highlights:** Local data encryption, Track flow, symptoms, moods, Log medications and birth control, Biometric and password lock, Open source code available, Data deletion option

**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 ephira free?

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

### Is Ondi free?

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

### Do ephira or Ondi have ads?

Neither ephira nor Ondi shows ads.

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

ephira ships an update every 6 months, and Ondi weekly. Most recently, ephira was updated on October 30, 2026 and Ondi on October 28, 2026.

---

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