Peri vs Full Moon Flow
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Peri
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No account, no cloud sync, no internet connection required. Track your periods and cycles in one place, log manually, get clear predictions and check what's coming up on a calendar. Gentle reminders, a history you can export. Minimal, clear, and calm. Peri is free to use, with no ads or paywalls. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Service: https://peri.asariko.net/terms/ Privacy Policy: https://peri.asariko.net/privacy/
Full Moon Flow
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Your cycle, your data, your device. Full Moon Flow is a simple, private period tracker that keeps all your data on your device. No accounts, no cloud sync, no tracking. Just open the app, tap a day, and log your flow. What it does: ⢠Log your daily flow intensity (spotting, light, medium, heavy) on a clean monthly calendar ⢠Log your mood if desired, track patterns over time to see how your cycle affects your mood. ⢠See your cycle history at a glance- period duration and cycle length for each past cycle ⢠View averages and trends- know your typical cycle length and how it's changing over time ⢠Get a gentle estimate of when your next period might start, based on your own history ⢠Export your data as a CSV file anytime. It's your data, you control it. What it doesn't do: ⢠No accounts to create ⢠No data sent to any server ever ⢠No ads, no analytics, no tracking ⢠No fertility or ovulation predictions ⢠No notifications (yet) Privacy first. Full Moon Flow was designed from the ground up to keep your menstrual health data completely private. Everything is stored locally on your device in an encrypted database. Nothing is transmitted over the internet. When you delete the app, your data is gone, because it was never anywhere else. Simple by design. No cluttered dashboards, no gamification, no social features. Just a calm, clean interface that helps you understand your cycle without the noise.
Screenshots
Verdict
The clearest difference is update cadence: Full Moon Flow at every 9 days against Peri's every 5 weeks. On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Peri ships an update every 5 weeks, Full Moon Flow every 9 days. The most recent releases landed on October 9, 2026 and October 8, 2026 respectively.
| Parameter | Peri | Full Moon Flow |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 weeks | Every 9 days ā better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone | iPhone, iPad ā better |
| Requires iOS | 16.4 | 16.4 |
| Further details ā not scored | ||
| Size | 44 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | ASAR AYGUL | Daniel Delellis |
In-app purchases
Peri
No in-app purchases
Full Moon Flow
No in-app purchases








