Selene vs Periodically
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Selene
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Simple, private, and secure. Your cycle data never leaves your phone. Period. ▸ TRULY PRIVATE No accounts. No cloud sync. No analytics. No tracking. Works 100% offline. ▸ MULTI-LANGUAGE SUPPORT English, Simplified & Traditional Chinese, and Spanish. ▸ COMPLETE TRACKING Log periods, flow intensity, 14+ symptoms, mood, and custom symptoms. Get cycle predictions based on your personal history. ▸ BACKUP & EXPORT Import/Backup exports. ▸ BEAUTIFUL & SIMPLE Clean calendar interface. Quick one-tap logging. Insights that actually help. No bloated features you'll never use. FEATURES • Track periods with one tap • Log flow intensity (light, medium, heavy, spotting) • Record 14+ symptoms: cramps, headaches, mood, fatigue, and more • Add custom symptoms that matter to you • Cycle predictions based on your history • Insights and patterns over time • Dark mode Selene - from the Greek meaning "Goddess of the Moon" Pay once, own forever. Built with Love by AiofEffect LLC Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://aiofeffect.com/privacy Terms & Conditions: https://aiofeffect.com/terms
Periodically
Track your menstrual cycle with a simple, private, and focused experience. Log periods, moods, and symptoms, and view historical data. An optional one-time upgrade unlocks advanced statistics and customization.
- Cycle tracking
- Mood and symptom logging
- History view
- Next cycle estimate
- Advanced statistics
- PDF export
- Custom themes
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Track your cycle with clarity, simplicity, and full privacy. Start for free. Upgrade once. No subscriptions. No data collection. Everything you track stays on your device, always. A focused experience that gives you exactly what you need to track your cycle with confidence. Free plan: • Track your period • Log mood and symptoms • View your history by day and month • Clean, simple interface • Next cycle window estimate • Widgets One-time upgrade: Unlock the full experience with a single payment • Advanced statistics for cycle, mood, and pain • Deeper insights and pattern summaries • PDF export • Custom color themes • Access to current premium features Features: • Clean and simple design — fast to use and easy to understand • Cycle tracking — log your period in seconds • Pain and mood tracking — understand how you feel over time • Useful statistics — see patterns in your cycle, mood, and symptoms • Full privacy — your data never leaves your device. No accounts. No tracking. No cloud Your health data is yours. All information is stored locally on your device. Periodically does not provide medical advice, and estimates should not be used for medical or contraception decisions.
Screenshots
Verdict
The clearest difference is update cadence: Periodically at fortnightly against Selene's monthly. Periodically also leads on iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and device support 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
Both are free to download. Selene sells 1 one-off in-app purchase and Periodically sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Selene ships an update monthly, Periodically fortnightly. Both last shipped on October 31, 2026.
| Parameter | Selene | Periodically |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.7 (3 ratings) — better |
| Number of ratings | — | 3 — better |
| Update frequency | Monthly | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.1 | 13.0 — better |
| Further details — not scored | ||
| Size | 41 MB | 25 MB |
| Age rating | 4+ | 12+ |
| Developer | Aiofeffect LLC | Danna Alexandra Garcia Lamas |
In-app purchases
Selene
- Selene Lifetime$1.99
Periodically
- Periodically Premium$5.99









