Comparison

Lunar Flow vs SymptomLog

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

Head to head
About

Lunar Flow

Features
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Lunar Flow helps you align your daily life with your menstrual cycle. Plan your days, track your moods, and understand your body's natural rhythmsβ€”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 β€’ Set your "Must Do" task and two important priorities each day β€’ Get phase-appropriate themes and tips to guide your focus β€’ See what to embrace and what to avoid based on your current phase β€’ Carry forward yesterday's intentions and context REFLECTION & TRACKING β€’ Quick mood check-ins with a simple 5-point scale β€’ Log daily context like work stress, poor sleep, or social events β€’ Celebrate daily wins and capture reflections β€’ Set intentions for tomorrow INSIGHTS & TRENDS β€’ View your mood patterns over time β€’ See how your productivity correlates with each phase β€’ Track your check-in streaks β€’ Understand your unique patterns CYCLE CALENDAR β€’ Beautiful monthly view with phase coloring β€’ Tap any day to see your logged moods, tasks, and notes β€’ Plan ahead with upcoming phase visibility LEARN ABOUT YOUR CYCLE β€’ Understand each phase: Menstrual, Follicular, Ovulatory, and Luteal β€’ Daily cycle facts to deepen your knowledge β€’ Phase-specific insights for body and mind COMPLETELY PRIVATE Your data never leaves your device. No accounts, no cloud sync, no trackingβ€”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 complicatedβ€”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

SymptomLog

Features
Read full description

Log every symptom, flare, medication, and trigger in under 5 seconds β€” no setup overwhelm, no freezing, no blank screen when you feel worst. Built for lupus, fibromyalgia, CFS, POTS, endometriosis, and all autoimmune conditions. Analytics show your trigger patterns and help you prepare for appointments. Track sleep alongside symptoms. Export a full health timeline to share with your doctor. Not just a diary β€” an analytical engine that works on your worst days. Terms of Use: https://docs.google.com/document/d/e/2PACX-1vQdEtKDnCjuEDWelsB_wM-TjZAkXYh9ySPqfApocJcf4VjOaZX7NLnHqF0K46oGEhyfIsls3yvEDiPN/pub

Screenshots

Lunar Flow4 screens
SymptomLog4 screens

Verdict

The call

The clearest difference is in-app purchases: Lunar Flow at none against SymptomLog's 3. Lunar Flow also leads on iOS requirement (15.6 vs 17.6). On price, ads and device support there is nothing between them.

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

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

Both are free to download. SymptomLog sells 3 in-app purchases, starting at $2.99 per month. Lunar Flow asks for nothing beyond the download.

Scorecard2 real differences Β· 4 level
Lunar Flow versus SymptomLog: the parameters behind the verdict, then further details
ParameterLunar FlowSymptomLog
PriceFreeFree
Update frequencyβ€”Daily
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhone, iPad, iPod β€” betteriPhone, iPad
Requires iOS15.6 β€” better17.6
Further details β€” not scored
Size4 MB6 MB
Age rating4+4+
DeveloperYing CaoSajith Lal m k

In-app purchases

None

Lunar Flow

No in-app purchases

3 purchases

SymptomLog

Subscriptions2
  • SymptomLog Monthly7 Days trial$2.991 Month
  • SymptomLog Annual7 Days trial$14.991 Year
One-time1
  • SymptomLog Lifetime$24.99

Questions

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

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