Comparison

wCalFree vs Flow

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Period day tracking
  • Cycle length prediction
  • Event planning
  • Medical record support
  • Month view navigation
  • Date marking
Features
Read full description

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.

About

Flow

Features
Read full description

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

wCalFree2 screens
Flow4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
wCalFree versus Flow: the parameters behind the verdict, then further details
ParameterwCalFreeFlow
PriceFreeFree
Rating3.0 (1 ratings) — better—
Positive reviews42.1% of reviews—
Number of ratings1 — better—
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS8.0 — better17.0
Further details — not scored
Size5 MB4 MB
Age rating12+4+
DeveloperEric Da Cunha拥军 刘

In-app purchases

None

wCalFree

No in-app purchases

None

Flow

No in-app purchases

Questions

Is wCalFree free?
wCalFree is free to download, with no in-app purchases.
Is Flow free?
Flow is free to download, with no in-app purchases.
Do wCalFree or Flow have ads?
Neither wCalFree nor Flow shows ads.
Which is updated more often, wCalFree or Flow?
wCalFree ships an update every 2 months, and Flow every 3 weeks. Most recently, wCalFree was updated on October 23, 2026 and Flow on October 6, 2026.

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