# Ovulation Predictor vs Estri

The clearest difference is rating: Estri at 4.5 against Ovulation Predictor's 1.0. Estri also leads on monetization model (free vs free with in-app purchases). Ovulation Predictor's advantage is ads (none vs shown) and iOS requirement (6.0 vs 15.0). On price, ratings volume, in-app purchases and device support there is nothing between them.

Both are free to download. Ovulation Predictor sells 1 one-off in-app purchase and Estri sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

Estri holds the better App Store score, 4.5 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

## The numbers

| Metric | Ovulation Predictor | Estri |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/ovulation-predictor/id967594995/reviews) | **[4.5 (2 ratings)](https://appshunter.io/ios/app/estri-period-tracker-and-cycle/id6739126294/reviews)** |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 6 days |
| Monetization | Free with in-app purchases | **Free** |
| Size | 12 MB | 121 MB |
| Requires iOS | **6.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [RAHI PATEL](https://appshunter.io/developer/931224275) | [Aditya Agarwal](https://appshunter.io/developer/1783729351) |

## What reviewers say

### Ovulation Predictor

[App page](https://appshunter.io/ios/app/ovulation-predictor/id967594995)

This app helps women predict their most fertile days and ovulation. It features a calendar view to track cycles, moods, and notes, along with charts for weight and temperature changes. Users input their last period's start and end dates, and average cycle length to generate predictions.

**Highlights:** Menstrual cycle tracking, Fertility prediction, Ovulation prediction, Calendar view, Mood and note tracking, Weight and temperature charting

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### Estri

[App page](https://appshunter.io/ios/app/estri-period-tracker-and-cycle/id6739126294)

This app accurately tracks menstrual cycles, predicting periods, ovulation, and fertile windows. It offers personalized insights for conception, birth control, and overall women's health management. Stay informed and prepared about your body's reproductive patterns.

**Highlights:** Cycle and period tracking, Ovulation and fertility window prediction, Pregnancy planning mode, AI-powered cycle forecasts, PMS symptom and mood logging, Personalized health insights

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Estri Pro - Monthly | $6.99 | per month |
| Estri Pro - Yearly | $39.99 | per year |


## Frequently asked questions

### Is Ovulation Predictor free?

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

### Is Estri free?

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

### Which has better reviews, Ovulation Predictor or Estri?

Estri is rated higher. Ovulation Predictor averages 1.0 out of 5 from 1 ratings, while Estri averages 4.5 from 2 ratings.

### Do Ovulation Predictor or Estri have ads?

Estri shows ads; Ovulation Predictor does not.

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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.*