Comparison

MoonFlow vs Holsi

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

Head to head
About

MoonFlow

This app helps you track your menstrual cycle, ovulation, and pregnancy with a focus on privacy. It offers accurate predictions, daily logging of symptoms, and a pregnancy mode. All your data is stored locally on your device, ensuring it's never shared or sold.

Highlights
  • Accurate period and ovulation predictions
  • Daily symptom and mood logging
  • Pregnancy mode with week-by-week development
  • 100% offline data storage
  • App lock with PIN or biometrics
  • Stealth mode for calculator disguise
  • Data export to file
Features
Read full description

MoonFlow is the privacy-first period and pregnancy tracker designed to be simple, beautiful, and 100% trustworthy. Track your menstrual cycle, ovulation, and pregnancy journey without compromising your privacy. No accounts. No ads. No data harvesting. Just you and your flow. Whether you are tracking your period, trying to conceive, or following your pregnancy week-by-week, MoonFlow adapts to your body's changing needs. COMPLETE CYCLE TRACKING Understand your body better with a modern, elegant dashboard. - Accurate Predictions: Know exactly when your next period, ovulation day, and fertile window will start based on your history. - Sexy Calendar: A visually stunning monthly view with color-coded days for period, fertility, and ovulation. - Daily Logging: Track flow intensity (light, medium, heavy, disaster), spotting, cervical mucus, and more. - Symptom & Mood Tracker: Log PMS symptoms, mood swings, energy levels, and intimacy to discover patterns in your health. - Intimacy Logging: Track protected/unprotected sex to help with family planning or contraception awareness. PREGNANCY MODE Switch seamlessly to Pregnancy Mode and watch your baby grow. - Week-by-Week Development: Track your baby’s size and gestational age with beautiful visuals. - Due Date Countdown: Know exactly how many days are left until you meet your little one. - Trimester Tracking: See which trimester you are in and what to expect. - Smart "Late" Detection: If you're trying to conceive and your period is late, MoonFlow intelligently suggests switching modes. PRIVACY-FIRST (SERIOUSLY) In a world where apps sell your health data, MoonFlow is a safe haven. - No Account Required: Start using the app instantly. We don't ask for your email, phone number, or social login. - 100% Offline: Your data lives on your phone, not in the cloud. We cannot see, sell, or share your health information because we don't have it. - App Lock: Secure the app with your biometric face ID, fingerprint, or a PIN code. STEALTH MODE Need extra discretion? - Calculator Disguise: Enable Stealth Mode to turn the MoonFlow icon into a functional calculator. - Hidden Entry: The app only opens when you enter your secret PIN code. To everyone else, it's just a calculator. - Discreet Notifications: Reminders are silenced or masked to protect your privacy. INSIGHTS & REMINDERS - Smart Notifications: Get reminders for your coming period, fertile window, or daily log—only if you want them. - Cycle History: View all your past cycles and averages in one place. - Data Export: You own your data. Export your entire history to a file for backup or to share with your doctor. MOONFLOW PREMIUM MoonFlow is free to use forever. Premium unlocks: • Advanced Analytics: Dive deeper with detailed charts and trend insights. • Weight Tracking: Set goals, view progress, and visualize history with smart charts. • Cycle Tips: Daily lifestyle tips for energy, workouts, and nutrition to match your rhythm. • Medication Reminders: Custom schedules for vitamins, supplements, and birth control. • Partner Forecast: Share your estimated timeline for better planning together. • PDF Reports: Export your complete cycle and wellness logs for personal backup. • Home Screen Widgets: See your cycle status at a quick glance. • Custom Themes: Personalize your journal with premium styles and app icons. Why choose MoonFlow? Most period trackers are cluttered with ads, social networks, and confusing interfaces. MoonFlow is different. We believe your health data belongs to you. We built a tracker that is calm, private, and powerful. Download MoonFlow today and sync with your cycle, securely. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Holsi

Features
Read full description

Your Personal Hormone Sister Track your cycle, get AI-powered advice, and care for your hormones — all in one app. Partner mode now available! Holsi isn't a complicated medical app. Think of her as your closest friend who nags you when you're struggling with PMS, reminds you to take your supplements, and looks out for your mental and physical health every day. Cycle Tracking Log your period with one tap. Holsi predicts your next date, ovulation window, and cycle phases — and gets smarter the more you log. AI Advice (Holsi's Take) Get personalized daily advice based on where you are in your cycle. Holsi speaks your language — no medical jargon, just real talk. Supplement Reminders Add your vitamins and supplements and set custom daily reminders. Never miss iron on period day again. Partner Mode Connect with your partner so they can see your cycle status and understand what you're going through. Care starts with understanding. AI Image Import (OCR) Already tracking somewhere else? Take a screenshot of your old records and Holsi reads the dates automatically. Cycle Insights After a few cycles, Holsi shows you your patterns — average cycle length, PMS trends, symptom history, and more. Backup & Restore Your data is safely synced to the cloud. Switch phones without losing a single record. (EULA): https://hol-si.com/terms (privacy): https://hol-si.com/privacy

Screenshots

MoonFlow4 screens
Holsi4 screens

Verdict

The call

The clearest difference is ads: MoonFlow at none against Holsi's shown. Holsi's advantage is update cadence (every 5 days vs fortnightly). On price, in-app purchases, device support and iOS requirement 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. MoonFlow sells 3 in-app purchases, starting at $3.99 per month and Holsi sells 4 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

MoonFlow ships an update fortnightly, Holsi every 5 days. The most recent releases landed on October 13, 2026 and October 17, 2026 respectively.

Scorecard2 real differences · 7 level
MoonFlow versus Holsi: the parameters behind the verdict, then further details
ParameterMoonFlowHolsi
PriceFreeFree
Rating1.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyFortnightlyEvery 5 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size176 MB15 MB
Age rating12+4+
DeveloperTarik Murat Islamheungsu hyun

In-app purchases

3 purchases

MoonFlow

Subscriptions2
  • Monthly Premium3 Days trial$3.991 Month
  • Annual Premium7 Days trial$29.991 Year
One-time1
  • Lifetime Access$79.99
4 purchases

Holsi

Subscriptions4
  • adsfree$1.991 Month
  • 홀시 프리미엄 월간$3.991 Month
  • 홀시 프리미엄 연간$29.991 Year
Show 1 more
  • Holsi with Partner$39.991 Year

Questions

Is MoonFlow free?
MoonFlow is free to download, with in-app purchases available.
Is Holsi free?
Holsi is free to download, with in-app purchases available.
Do MoonFlow or Holsi have ads?
Holsi shows ads; MoonFlow does not.
Which is updated more often, MoonFlow or Holsi?
MoonFlow ships an update fortnightly, and Holsi every 5 days. Most recently, MoonFlow was updated on October 13, 2026 and Holsi on October 17, 2026.

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