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Clue vs Mori
The short answer: Clue is the science-credibility choice — Berlin-based, GDPR-regulated, with research partnerships and dozens of tracking categories, but it requires an account and puts advanced features behind a subscription. Mori is the zero-friction choice: no account, fully offline, free core features, and a one-time US$3.99 if you ever want encrypted sync.
Side by side
| Clue | Mori | |
|---|---|---|
| Price | Free tier; Clue Plus subscription for all four tracking modes and extras (regional monthly/yearly pricing) | All core features free forever; optional encrypted sync US$3.99 once |
| Account | Required — its terms state you must create an account to use the app | None. An email is only needed if you opt into cloud sync |
| Offline use | Core logging works offline; account features assume connectivity | Fully functional without network — recording, calendar, estimates, insights, export |
| Where records live | Clue's servers, under EU/GDPR protections | On your phone by default; optional sync is encrypted on-device before upload |
| Privacy stance | Strong legal protection (GDPR), no ad-based data sales; data still sits in the cloud | Architectural privacy: no account, no server copy, no ads, no tracking SDKs |
| Prediction style | Science-branded predictions; broad cycle statistics | Date ranges with an explicit basis and confidence level — estimates, never guarantees |
| Platforms | iOS and Android | Android today (signed APK); iOS in progress |
| Languages | 20+ | English and Simplified Chinese |
Where they genuinely differ
Legal vs architectural privacy
Clue's privacy promise rests on European law: your data lives on EU servers under GDPR. That is real protection, but the data still leaves your device. Mori's promise is architectural — with sync off there is no server copy at all, so there is nothing to leak, subpoena or misconfigure.
Tracking breadth
Clue tracks dozens of categories (moods, pain, energy, sex, sleep) and supports conception and pregnancy modes. Mori deliberately stays narrow: periods, cycle estimates and basic insights. If you want deep symptom taxonomy, Clue has the wider toolkit.
Pricing shape
Clue Plus is a recurring subscription — all tracking modes and some features require it. Mori's free tier is the whole product minus sync; the single paid item is a US$3.99 one-time unlock, not a subscription.
Which should you choose?
- Choose Clue if you want deep symptom tracking, science-backed framing, EU privacy law protection and both iOS + Android — and you're comfortable creating an account and possibly paying a subscription.
- Choose Mori if you want no account, no server copy of your records, full offline use and no subscription. Android only, for now.
FAQ
Does Clue require an account?
Yes — Clue's terms state you need to create an account to use the app. Mori requires no account at all; the calendar is ready on first open.
Is Clue more private than Mori?
They take different approaches. Clue is Berlin-based and operates under GDPR — strong legal protection, but your data still lives on their servers. Mori stores records only on your phone unless you enable encrypted sync, so there is no server copy to protect in the first place.
Which is better for irregular cycles?
Both handle irregular cycles, but present them differently. Clue offers detailed cycle statistics across many tracking categories. Mori shows the estimate as a date range and lowers the stated confidence instead of implying false precision.