# Ovulation Estimator vs Ovulation Calc

The clearest difference is rating: Ovulation Estimator at 5.0 against Ovulation Calc's 1.0. Ovulation Estimator also leads on update cadence (every 6 months vs every 45 months). Ovulation Calc's advantage is iOS requirement (7.0 vs 18.0). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Ovulation Estimator holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Ovulation Estimator ships an update every 6 months, Ovulation Calc every 45 months. The most recent releases landed on October 1, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Ovulation Estimator | Ovulation Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ovulation-estimator/id529437218/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/ovulation-calc/id615416891/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 45 months |
| Monetization | Free | Free |
| Size | 6 MB | 8 MB |
| Requires iOS | 18.0 | **7.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Malay Patel](https://appshunter.io/developer/510333524) | [Kyriakos Leivadas](https://appshunter.io/developer/537179532) |

## What reviewers say

### Ovulation Estimator

[App page](https://appshunter.io/ios/app/ovulation-estimator/id529437218)

This health tool helps you estimate your ovulation date. Simply enter your last menstrual period and cycle length to predict your most fertile days. It's designed for women tracking their reproductive health.

**Highlights:** Ovulation date calculation, Last menstrual period input, Period cycle length input, Fertile window prediction, Health and fitness tracking

**Features:** macOS Compatibility

**In-app purchases:** none


### Ovulation Calc

[App page](https://appshunter.io/ios/app/ovulation-calc/id615416891)

Predict your most fertile days to increase your chances of conception. This tool helps determine ovulation timing based on individual menstrual cycles. It is not intended for pregnancy prevention.

**Highlights:** Ovulation prediction, Fertile window identification, Menstrual cycle tracking, Conception assistance

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

**In-app purchases:** none


## Frequently asked questions

### Is Ovulation Estimator free?

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

### Is Ovulation Calc free?

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

### Which has better reviews, Ovulation Estimator or Ovulation Calc?

Ovulation Estimator is rated higher. Ovulation Estimator averages 5.0 out of 5 from 1 ratings, while Ovulation Calc averages 1.0 from 1 ratings.

### Do Ovulation Estimator or Ovulation Calc have ads?

Neither Ovulation Estimator nor Ovulation Calc shows ads.

### Which is updated more often, Ovulation Estimator or Ovulation Calc?

Ovulation Estimator ships an update every 6 months, and Ovulation Calc every 45 months. Most recently, Ovulation Estimator was updated on October 1, 2026 and Ovulation Calc on October 5, 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.*