# Fertility Tracker | Ovulation vs Nisaa

The clearest difference is in-app purchases: Nisaa at none against Fertility Tracker | Ovulation's 4. Nisaa also leads on ads (none vs shown) and update cadence (every 6 weeks vs every 3 months). Fertility Tracker | Ovulation's advantage is iOS requirement (15.0 vs 18.0). On price and device support there is nothing between them.

Both are free to download. Fertility Tracker | Ovulation sells 4 in-app purchases, starting at $0.99 per 7 days. Nisaa asks for nothing beyond the download.

Fertility Tracker | Ovulation ships an update every 3 months, Nisaa every 6 weeks. The most recent releases landed on October 28, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Fertility Tracker | Ovulation | Nisaa |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Size | 80 MB | 12 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 12+ |
| Developer | [Erdem Kara](https://appshunter.io/developer/1015700209) | [Sussex Endocrine Clinic Ltd](https://appshunter.io/developer/1830882682) |

## What reviewers say

### Fertility Tracker | Ovulation

[App page](https://appshunter.io/ios/app/fertility-tracker-ovulation/id6754397480)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - Weekly Subscription | $0.99 | per 7 days |
| Premium - Monthly Subscription | $2.99 | per month |
| Premium - Yearly Subscription | $19.99 | per year |
| Premium - Yearly Subscription | $29.99 | per year |


### Nisaa

[App page](https://appshunter.io/ios/app/nisaa-period-and-cycle-tracker/id6772802488)

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

**In-app purchases:** none


## Frequently asked questions

### Is Fertility Tracker | Ovulation free?

Fertility Tracker | Ovulation is free to download, with in-app purchases available.

### Is Nisaa free?

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

### Do Fertility Tracker | Ovulation or Nisaa have ads?

Fertility Tracker | Ovulation shows ads; Nisaa does not.

### Which is updated more often, Fertility Tracker | Ovulation or Nisaa?

Fertility Tracker | Ovulation ships an update every 3 months, and Nisaa every 6 weeks. Most recently, Fertility Tracker | Ovulation was updated on October 28, 2026 and Nisaa on October 6, 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.*