Comparison

FemLogger Cycle Tracker vs Calla

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

Head to head
About

FemLogger Cycle Tracker

Features
Read full description

FemLogger is your personal log for cycle, mood, sleep and medication — built with privacy at its core. All your health data stays on your own device. No account, no cloud, no hassle. WHAT YOU CAN TRACK • Menstrual cycle — start and end dates, intensity and symptoms • Mood and energy throughout the day • Sleep — duration and quality • Medication and supplements, with personal reminders INSIGHTS THAT MATTER • A clear dashboard showing your day at a glance • A calendar with your full cycle in view • Charts that reveal patterns in mood, sleep and cycle • A prediction of your next cycle based on your own history SHARE AND EXPORT • Generate a clean PDF report, ideal for a conversation with your doctor • Export your data as CSV whenever you want • You decide what to share — nothing leaves your device without your action REMINDERS THAT WORK • Set a reminder per medication • Reliable notifications, even in the background PRIVACY FIRST • Your health data is stored locally on your device • No account required, no server storage of your log • You stay in control AVAILABLE IN 4 LANGUAGES Dutch, English, German and French. FemLogger is a tool to track your own data and is not a substitute for medical advice, diagnosis or treatment. Always consult a professional for health concerns.

About

Calla

Features
Read full description

Calla is a private perimenopause and menopause tracker for iPhone. Keep a daily diary of symptoms, hot flashes, sleep and hormone replacement therapy (HRT). Calla Pro adds insights and PDF reports for your next medical appointment. MADE FOR THIS STAGE • 25+ symptoms with severity, plus your own custom symptoms and notes • One-tap hot flash log with time of day, night sweats and sleep • Works whether your periods are regular, irregular or gone – including after a hysterectomy or with an IUD • Tracks the gap since your last period and flags bleeding after 12 months HRT, PROPERLY • Patches, gels, sprays, tablets, pessaries, testosterone and more • Daily, twice-weekly, weekly and cyclical schedules with reminders that respect Focus modes • Log dose changes and see how your symptoms compared before and after SEE THE PATTERNS • Calendar heatmap and 7/30/90-day trends • Which triggers (alcohol, caffeine, stress, poor sleep) go with worse days • Adherence vs symptoms, hot flash frequency by time of day BRING PROOF TO YOUR APPOINTMENT • PDF report with charts, your HRT regimen and adherence, bleeding pattern, labs and your questions • Share from the app or print PRIVATE BY DESIGN • No account, no sign-up, no email • Data stays on your iPhone; optional iCloud backup and full export (CSV, JSON, PDF) • Optional Face ID lock • Writes symptoms to Apple Health and imports your cycle history Daily logging, medication reminders and JSON/CSV exports are available without a subscription. Calla Pro unlocks Insights and creation of PDF reports. Calla Pro is available as a subscription: $39.99/year after a 7-day free trial, or $7.99/month. Payment is charged to your Apple ID account. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in Settings › Apple ID › Subscriptions. Calla is a tracking tool, not a medical device. It does not diagnose or treat conditions. Always talk to your healthcare provider about symptoms and treatment. Privacy Policy: https://callatracker.app/privacy Terms of Use: https://callatracker.app/terms Support: https://callatracker.app/support

Screenshots

FemLogger Cycle Tracker4 screens
Calla4 screens

Verdict

The call

The clearest difference is in-app purchases: FemLogger Cycle Tracker at none against Calla's 2. FemLogger Cycle Tracker also leads on iOS requirement (13.0 vs 16.4). On price, ads and device support 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. Calla sells 2 in-app purchases, starting at $7.99 per month. FemLogger Cycle Tracker asks for nothing beyond the download.

Scorecard2 real differences Ā· 4 level
FemLogger Cycle Tracker versus Calla: the parameters behind the verdict, then further details
ParameterFemLogger Cycle TrackerCalla
PriceFreeFree
Update frequency—Every 4 days
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPod — betteriPhone
Requires iOS13.0 — better16.4
Further details — not scored
Size37 MB69 MB
Age rating17+12+
DeveloperFull Measure ICTArman Malkhasyan

In-app purchases

None

FemLogger Cycle Tracker

No in-app purchases

2 purchases

Calla

Subscriptions2
  • Calla Pro - Monthly$7.991 Month
  • Calla Pro - Yearly7 Days trial$39.991 Year

Questions

Is FemLogger Cycle Tracker free?
FemLogger Cycle Tracker is free to download, with no in-app purchases.
Is Calla free?
Calla is free to download, with in-app purchases available.
Do FemLogger Cycle Tracker or Calla have ads?
Neither FemLogger Cycle Tracker nor Calla shows ads.

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