wCalFree vs Flow
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.
Flow
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FlowSync is your intelligent period and cycle tracking companion. With a beautiful, intuitive calendar interface, FlowSync helps you understand your body's natural rhythms. KEY FEATURES: • Smart Calendar — Visual cycle tracking with color-coded days for period, fertile window, and ovulation • Period Predictions — AI-powered cycle predictions based on your history • Symptom Tracking — Log mood, energy, cramps, and other symptoms daily • Today View — At-a-glance dashboard showing cycle day, phase, and upcoming events • Cycle Insights — Understand your patterns with detailed cycle analysis • Beautiful Design — Clean, modern interface that's a joy to use FlowSync is designed for informational and general wellness purposes only. It is not intended to be used for contraception, medical advice, diagnosis, or treatment. Always consult your healthcare provider for medical concerns.
Screenshots
Verdict
The clearest difference is update cadence: Flow at every 3 weeks against wCalFree's every 2 months. wCalFree's advantage is device support (3 vs 1) and iOS requirement (8.0 vs 17.0). On price, 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.
wCalFree ships an update every 2 months, Flow every 3 weeks. The most recent releases landed on October 23, 2026 and October 6, 2026 respectively.
| Parameter | wCalFree | Flow |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (1 ratings) — better | — |
| Positive reviews | 42.1% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 8.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 5 MB | 4 MB |
| Age rating | 12+ | 4+ |
| Developer | Eric Da Cunha | 拥军 刘 |
In-app purchases
wCalFree
No in-app purchases
Flow
No in-app purchases









