Comparison

Lunar Flow vs Sync Period

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

Head to head
About

Lunar Flow

Features
Read full description

Lunar Flow helps you align your daily life with your menstrual cycle. Plan your days, track your moods, and understand your body's natural rhythms—all with complete privacy. YOUR CYCLE, YOUR GUIDE Every phase of your cycle affects your energy, mood, and capabilities differently. Lunar Flow helps you work with your body, not against it, by providing personalized daily guidance based on where you are in your cycle. DAILY PLANNING • Set your "Must Do" task and two important priorities each day • Get phase-appropriate themes and tips to guide your focus • See what to embrace and what to avoid based on your current phase • Carry forward yesterday's intentions and context REFLECTION & TRACKING • Quick mood check-ins with a simple 5-point scale • Log daily context like work stress, poor sleep, or social events • Celebrate daily wins and capture reflections • Set intentions for tomorrow INSIGHTS & TRENDS • View your mood patterns over time • See how your productivity correlates with each phase • Track your check-in streaks • Understand your unique patterns CYCLE CALENDAR • Beautiful monthly view with phase coloring • Tap any day to see your logged moods, tasks, and notes • Plan ahead with upcoming phase visibility LEARN ABOUT YOUR CYCLE • Understand each phase: Menstrual, Follicular, Ovulatory, and Luteal • Daily cycle facts to deepen your knowledge • Phase-specific insights for body and mind COMPLETELY PRIVATE Your data never leaves your device. No accounts, no cloud sync, no tracking—just you and your cycle. Delete the app anytime and all data goes with it. DESIGNED FOR REAL LIFE Add context tags when life gets complicated—deadlines, travel, poor sleep, or emotional days. Lunar Flow adjusts its recommendations to meet you where you are. Start flowing with your cycle today.

About

Sync Period

This health app offers a simple and intuitive way to monitor your menstrual cycles. It allows you to log periods, emotions, symptoms, and energy levels, providing insights and reminders for your next cycle. Personalized notes and a monthly calendar view help you stay informed about your reproductive health.

Highlights
  • Period tracking
  • Symptom logging
  • Emotion tracking
  • Energy level logging
  • Cycle insights
  • Period reminders
  • Notes and calendar view
Read full description

Minimal, clean, thoughtful health app - Easily Track Your Periods - Log Period, Emotions, Symptoms, Energy - Current Cycle Info - Write Personalized Notes - Stats & Monthly Calendar View - Next Period Estimate - Next Period Reminder Notification Any questions or feedback? Reach out at startinjune.apps@gmail.com Privacy Policy & Terms https://startinjune-apps.github.io/syncperiod/privacy https://startinjune-apps.github.io/syncperiod/terms

Screenshots

Lunar Flow4 screens
Sync Period3 screens

Verdict

The call

The clearest difference is device support: Lunar Flow at 3 against Sync Period's 1. Lunar Flow also leads on iOS requirement (15.6 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.

Scorecard2 real differences · 7 level
Lunar Flow versus Sync Period: the parameters behind the verdict, then further details
ParameterLunar FlowSync Period
PriceFreeFree
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
Update frequency—Monthly
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.6 — better17.0
Further details — not scored
Size4 MB6 MB
Age rating4+4+
DeveloperYing CaoStart in June LLC

In-app purchases

None

Lunar Flow

No in-app purchases

None

Sync Period

No in-app purchases

Questions

Is Lunar Flow free?
Lunar Flow is free to download, with no in-app purchases.
Is Sync Period free?
Sync Period is free to download, with no in-app purchases.
Do Lunar Flow or Sync Period have ads?
Neither Lunar Flow nor Sync Period shows ads.

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