# wCalFree vs Ovulation Estimator

The clearest difference is rating: Ovulation Estimator at 5.0 against wCalFree's 3.0. wCalFree's advantage is update cadence (every 2 months vs every 6 months) and iOS requirement (8.0 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 3.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

wCalFree ships an update every 2 months, Ovulation Estimator every 6 months. The most recent releases landed on October 23, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | wCalFree | Ovulation Estimator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/wcalfree/id297245024/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ovulation-estimator/id529437218/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 42.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | Free | Free |
| Size | 5 MB | 6 MB |
| Requires iOS | **8.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Eric Da Cunha](https://appshunter.io/developer/297245027) | [Malay Patel](https://appshunter.io/developer/510333524) |

## What reviewers say

### wCalFree

[App page](https://appshunter.io/ios/app/wcalfree/id297245024)

This period tracker helps users log and predict menstrual cycles for better health management and event planning. It offers a simple interface to mark days and automatically refines cycle length predictions based on historical data.

**Highlights:** Period day tracking, Cycle length prediction, Event planning, Medical record support, Month view navigation, Date marking

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is wCalFree free?

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

### Is Ovulation Estimator free?

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

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

Ovulation Estimator is rated higher. wCalFree averages 3.0 out of 5 from 1 ratings, while Ovulation Estimator averages 5.0 from 1 ratings.

### Do wCalFree or Ovulation Estimator have ads?

Neither wCalFree nor Ovulation Estimator shows ads.

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

wCalFree ships an update every 2 months, and Ovulation Estimator every 6 months. Most recently, wCalFree was updated on October 23, 2026 and Ovulation Estimator on October 16, 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.*