Comparison

LunaCycle vs Cycle Sync

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

Head to head
About

LunaCycle

Features
Read full description

Every cycle tells a story. LunaCycle helps you read yours. Log your period, track symptoms, and get science-backed predictions -- all stored privately on your device, no account required. PERIOD & CYCLE TRACKING Log each period day with a single tap. LunaCycle automatically calculates your cycle length, predicts your next period, and shows you exactly where you are in your current cycle. FERTILITY WINDOW PREDICTIONS Know your fertile days before they arrive. LunaCycle uses your logged history to identify your ovulation day and fertile window, helping you plan with confidence -- whether you are trying to conceive or simply want to understand your body better. DAILY SYMPTOM LOG Record mood, flow intensity, physical symptoms, pain level, basal body temperature, water intake, and body weight. Every log builds a richer picture of your unique patterns over time. INSIGHTS & TRENDS Analyze your last 3, 6, or 12 months at a glance. See average cycle length, period duration, top symptoms, and BBT charts -- insights that help you spot changes and talk to your doctor with real data. CALENDAR VIEW A full monthly calendar shows period days, fertile windows, and ovulation markers at a glance. Tap any day for detailed phase information and logged symptoms. WHO IS LUNACYCLE FOR? LunaCycle is for anyone who wants a clear, honest view of their menstrual health -- whether tracking for the first time, planning a pregnancy, or monitoring patterns through perimenopause. Your data stays on your device. No cloud sync, no account, no data collection. LunaCycle works fully offline.

About

Cycle Sync

Features
Read full description

CYCLE-AWARE CALENDAR CycleSync helps professional women align their work schedules with their natural menstrual cycle phases. Instead of fighting through low-energy days, you get smart suggestions to move demanding meetings to days when your focus and energy peak. WORK WITH YOUR RHYTHM, NOT AGAINST IT Your cycle isn't an obstacle. It's a compass. Menstrual Phase (Winter) Rest and recovery. Reschedule high-stakes meetings. Follicular Phase (Spring) Rising energy. Schedule creative work and planning. Ovulation Phase (Summer) Peak performance. Take on negotiations and leadership. Luteal Phase (Autumn) Focused wind-down. Finish projects and organize. SMART RESCHEDULING CycleSync connects to your calendar and automatically detects: • Events on heavy-flow days • Events on rest-phase days • Dense meeting days during focus phases (3+ events) One tap on a conflict card opens the Time Slot Picker. Your available slots on better days are pre-calculated. Reschedule in seconds. An undo option gives you 10 seconds to reverse. RULES, NOT GUESSWORK. The recommendation engine is rule-based: 1. Your cycle history predicts your phase for any date. 2. Your phase preferences determine focus or rest classifications. 3. Your calendar events are flagged when they conflict with your classifications. 4. Available slots on recommended-phase days enable one-tap rescheduling. EVERYTHING IN ONE SUBSCRIPTION An active CycleSync Pro subscription unlocks the whole planner: • Cycle logging, phase prediction and a 14-day cycle outlook • Dashboard with today's phase and a 7-day week view • Calendar sync with Apple Calendar and Google Calendar • Conflict detection and unlimited reschedule suggestions • One-tap rescheduling with a 10-second undo • Five notification types: reschedule alerts, phase transitions, period predictions, tomorrow's preview and re-engagement nudges • Insights: energy curve, seasonal capacities and full cycle history • Cycle import from Apple Health • Export your cycle history as JSON or CSV • Light, Dark and System themes BEFORE YOU SUBSCRIBE Onboarding and the plan comparison are free, so you can see how CycleSync works before you pay. The planner opens once your subscription is active, and everything you have already logged stays on your device. Weekly, monthly and yearly plans are available in the app. PRIVACY FIRST • All cycle data is stored locally on your device • No cloud sync and no tracking • Health data is read-only from Apple Health • Export your data anytime as JSON or CSV HOW TO START 1. Open CycleSync and log your last period start date. 2. Connect your calendar using Apple Calendar or Google Calendar. 3. Set your typical cycle length (default: 28 days). 4. Review your dashboard. Suggested reschedules appear automatically. Download CycleSync and work with your natural rhythm. By subscribing, you agree to our Terms of Use (EULA): https://cyclesync.tunnxo.com/legal/eula.html Privacy Policy: https://cyclesync.tunnxo.com/legal/privacy.html

Screenshots

LunaCycle4 screens
Cycle Sync4 screens

Verdict

The call

The clearest difference is in-app purchases: LunaCycle at none against Cycle Sync's 3. LunaCycle also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Cycle Sync sells 3 in-app purchases, starting at $4.99 per 7 days. LunaCycle asks for nothing beyond the download.

Scorecard2 real differences Ā· 4 level
LunaCycle versus Cycle Sync: the parameters behind the verdict, then further details
ParameterLunaCycleCycle Sync
PriceFreeFree
Update frequency—Every 2 months
AdsNo — betterYes
In-app purchasesNo — betterYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better18.2
Further details — not scored
Size4 MB78 MB
Age rating4+4+
DeveloperNguyen Xuan HaiAmit Kairon

In-app purchases

None

LunaCycle

No in-app purchases

3 purchases

Cycle Sync

Subscriptions3
  • CycleSync Pro — Weekly$4.997 Days
  • CycleSync Pro$9.991 Month
  • CycleSync Pro$59.991 Year

Questions

Is LunaCycle free?
LunaCycle is free to download, with no in-app purchases.
Is Cycle Sync free?
Cycle Sync is free to download, with in-app purchases available.
Do LunaCycle or Cycle Sync have ads?
Cycle Sync shows ads; LunaCycle does not.

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