Prime Period vs Dotted
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Prime Period
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PRIME PERIOD: THE PRIVATE CYCLE TRACKER More private than a paper journal. Prime Period is a cycle tracker designed to provide a secure and straightforward way to understand your body. Keep your data exactly where it belongs: on your device. SECURE & ACCOUNT-FREE - No Sign-Up Required: Your data is stored locally on your device, no accounts or emails required. - Privacy-First: We don't collect your personal information. - On-Device Storage: Data is stored locally on your device, protected by your device's built-in security. - Optional transfer: Move data between devices with a private key; we never see the key. STRAIGHTFORWARD TRACKING - Cycle Insights: Log dates and view your monthly patterns. - Preparedness: Get clear estimates for your next period. - Daily Logging: Track flow, mood, and symptoms. - Fluid Experience: Fast, responsive, and reliable. THE PRIME PROMISE Health tracking should be helpful and, above all, private. With Prime Period, your personal information stays exactly where it belongs: under your control. MEDICAL DISCLAIMER Prime Period is an informational tool and is not intended for contraception or medical diagnosis. Please consult a healthcare professional for medical advice. Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Dotted
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Dotted is a calm, beautiful period and cycle tracker that keeps your data completely private ā and is genuinely helpful in the moment. Private by design ⢠Everything stays on your phone, encrypted. No account, no servers, no tracking. ⢠No ads. No data selling. Free, always. ⢠Move your data between phones with a passphrase-encrypted backup ā nothing ever touches a server. Predictions that adapt to you ⢠Learns your own rhythm from your last cycles ā shown as honest ranges, never a fake exact day, and widening when your cycles vary. ⢠Estimates ovulation from your own ovulation tests and cervical-mucus logs, so it doesn't just assume "day 14." ⢠Personal symptom patterns: when cramps tend to hit, when PMS usually shows up. In the moment ⢠A big cramp-relief button with quick, evidence-based relief and craving swaps. ⢠Tap any day to log flow, pain, mood, energy, sleep and more ā in one quick screen. ⢠A cycle wheel, a phase-colored calendar, and home-screen widgets. Gentle reminders, your way ⢠Phase changes, period due/late, PMS, fertile window, pill, daily check-in ā each toggleable, scheduled locally on your device. Dotted's predictions are estimates, not contraception or medical advice.
Screenshots
Verdict
The clearest difference is iOS requirement: Dotted at 14.0 against Prime Period's 16.6. 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. Prime Period sells 2 in-app purchases, starting at $0.99 per month and Dotted sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
| Parameter | Prime Period | Dotted |
|---|---|---|
| Price | Free | Free |
| Update frequency | ā | Every 5 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.6 | 14.0 ā better |
| Further details ā not scored | ||
| Size | 1 MB | 27 MB |
| Age rating | 4+ | 12+ |
| Developer | Figenblad | TORBJOERN SUNDVOR HENRIKSEN |
In-app purchases
Prime Period
- Premium - Monthly$0.991 Month
- Premium - Yearly$9.991 Year
Dotted
- A coffee$3.00
- A snack$5.00
- A tip$10.00






