Comparison

Ondi vs TideMoon

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

Head to head
About

Ondi

Features
Read full description

Private period tracking, with daily logs and cycle history on your device. No account required. Ondi learns your unique cycle and gives you personalised insights that get smarter with every log. WHAT'S FREE — ALWAYS • Period tracking with automatic cycle detection • Daily logging: flow, mood, energy, sleep, symptoms • Cycle predictions that improve over time • Calendar with cycle history • Cycle irregularity alerts UNLOCK EVERYTHING (one-time purchase) • Fertility tracking: temperature, cervical mucus, ovulation tests • Contraception side effect matching • Headache and migraine pattern detection • PMS prediction and sleep analysis • Exercise guidance tailored to your cycle phase • Trying to Conceive mode with timing insights • Pregnancy mode: week-by-week guidance and due date • Postpartum recovery tracking • Data export for doctor appointments PRIVACY FIRST Your logs are stored on your device. Ondi does not operate a server for your health records or use tracking analytics. Apple Health access is optional, and you choose when to export or share a report. Copies you export and data stored in Apple Health are managed separately. EVERY STAGE OF YOUR JOURNEY From first periods to menopause, Ondi adapts. Perimenopause pattern detection, postpartum period return guidance, and breastfeeding-aware insights — all explained in plain language. WORKS WITH APPLE WATCH Reads wrist temperature and heart rate data from Apple Health to enhance predictions without manual tracking. Ondi is not a medical device and should not be used as contraception. Predictions are estimates. Always consult a healthcare provider for medical decisions.

About

TideMoon

Features
Read full description

TideMoon —— A Premium & Elegant Menstrual Tracker Simplicity meets intelligence. TideMoon is a minimalist iOS application designed for the modern woman who values both exquisite aesthetics and absolute privacy. By combining high-end "Glassmorphism" design with precision tracking, we transform menstrual health management into a journey of visual and mental harmony. Key Features: Dynamic Tide Ring: A unique real-time visualization of your current cycle day and physiological phase. Privacy-First Design: 100% Local Storage. Your health records and cycle data stay exclusively on your device. No cloud servers, zero data leakage risks. Deep Cycle Insights: Unlock comprehensive analytics on cycle variance and fertility trends based on local biometric algorithms after just two records. Professional PDF Export: Generate clean, medical-grade PDF reports with one click—perfect for healthcare consultations or personal records. Secure Access: Fully integrated with FaceID / TouchID to ensure your most private data remains strictly confidential. Tactile Immersion: Experience fluid micro-animations and premium haptic feedback that make every interaction feel alive. Why TideMoon? No Accounts: Start using immediately without registry or login. Zero Tracking: No ads, no third-party trackers, no behavioral analysis. Offline Capable: All predictions and report generations are processed locally on your device. Questions or feedback? Contact us at: HeartLog@icloud.com

Screenshots

Ondi4 screens
TideMoon4 screens

Verdict

The call

The clearest difference is in-app purchases: TideMoon at none against Ondi's 1. On price, ads, 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. Ondi sells 1 one-off in-app purchase. TideMoon asks for nothing beyond the download.

Scorecard1 real difference · 5 level
Ondi versus TideMoon: the parameters behind the verdict, then further details
ParameterOndiTideMoon
PriceFreeFree
Update frequencyWeekly—
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better17.6
Further details — not scored
Size10 MB8 MB
Age rating12+4+
DeveloperBlue Flame Games向东 张

In-app purchases

1 purchases

Ondi

One-time1
  • Cyla Premium$7.99
None

TideMoon

No in-app purchases

Questions

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

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