wCalFree vs Ovulation Estimator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
wCalFree
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.
- Period day tracking
- Cycle length prediction
- Event planning
- Medical record support
- Month view navigation
- Date marking
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wCalFree is a special calendar for tracking period days. In order to help for medical records, prevent unexpected surprises and plan for future events with all the knowledge. It's a camp assistant for Miss, Mrs or Mr. An ad-free, enhanced version is also available: wCal. Instructions: All operations are done on a month view. On the opening, the current month is displayed. Right and left arrows navigate to next or previous month. Tap on a date: to mark it in red or deselect it. Current day is written in blue. Future occurrences will be displayed in purple. The cycle length automatically refines with the complete history. WARNING: This App is for iOS 8 and higher. Keywords : Menstrual calendar, period calendar, cycles, menses.
Ovulation Estimator
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.
- Ovulation date calculation
- Last menstrual period input
- Period cycle length input
- Fertile window prediction
- Health and fitness tracking
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Using this calculator know your ovulation date. Input your last menstrual period and period cycle to calculate the probable date of ovulation. Please give your valuable comments and ratings for further improvement.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 15, 2026 and October 16, 2026 respectively.
| Parameter | wCalFree | Ovulation Estimator |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (1 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 42.1% of reviews | — |
| Number of ratings | 1 | 1 |
| Update frequency | Every 2 months — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 8.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 5 MB | 6 MB |
| Age rating | 12+ | 4+ |
| Developer | Eric Da Cunha | Malay Patel |
Customer experience
wCalFree
Ovulation Estimator
In-app purchases
wCalFree
No in-app purchases
Ovulation Estimator
No in-app purchases
