Comparison

Prime Period vs Diamond Period Tracker

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

Head to head
About

Prime Period

Features
Read full description

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/

About

Diamond Period Tracker

Read full description

Your Cycle. Your Privacy. Your Diamond. Diamond is a private period tracker, period calendar, menstrual cycle tracker, ovulation tracker, and fertility tracker designed for women who value privacy, elegance, and simplicity. Track your period, predict your ovulation, monitor your fertile window, record symptoms, moods, and energy, and build a complete cycle history—all without creating an account. No sign up. No cloud. No tracking. Your data stays on your device. A BEAUTIFUL PERIOD TRACKER Diamond transforms everyday cycle tracking into a calm and premium experience. Whether you’re tracking your menstrual cycle, using it as a period diary, checking your period calendar, or monitoring your fertility window, Diamond keeps everything beautifully organized. PERIOD & MENSTRUAL CYCLE TRACKER Stay informed throughout every stage of your cycle. •Period tracker •Menstrual cycle tracker •Cycle calendar •Period calendar •Ovulation tracker •Fertility tracker •Fertile window prediction •Period prediction •Cycle prediction •Cycle length tracking •Period log •Menstrual calendar Understand your body with accurate and simple tracking. LOG YOUR DAILY SYMPTOMS Record everything that matters. •Flow intensity •Cramps •Headache •Bloating •Breast tenderness •Mood tracking •Energy tracking •Notes & reflections •Daily journal Over time, Diamond helps reveal patterns in your cycle. SMART CYCLE INSIGHTS Your personal history becomes meaningful insights. •Cycle Archive •Period history •Symptom history •Mood history •Future period predictions •Ovulation estimates •Fertility window estimates Understand how your cycle changes month after month. PRIVATE BY DESIGN Privacy isn’t a feature. It’s the foundation. Diamond never asks you to create an account. •No sign up •No email •No cloud storage •No third-party tracking •No data collection •Local storage only •Complete control of your personal information Your health data belongs to you. THE VAULT Protect your most personal notes with a secure PIN. Store private reflections, cycle notes, and personal journal entries inside your private Vault. Only you can access them. PREMIUM EXPERIENCE Designed to feel elegant every day. •Beautiful Light Mode •Luxurious Dark Mode •Clean minimalist interface •Smooth navigation •Fast performance Diamond focuses on clarity, comfort, and privacy—not clutter. WHY WOMEN CHOOSE DIAMOND •Private period tracker •Period calendar •Menstrual cycle tracker •Ovulation tracker •Fertility tracker •Symptom tracker •Mood tracker •Wellness journal •Local storage •PIN Lock •Beautiful design •No account required •No cloud •Zero tracking Download Diamond today and experience a private, elegant, and beautifully designed period tracker made for everyday cycle tracking. Diamond — Your Private Period Tracker. Privacy Policy https://sites.google.com/view/diamondperiodtracker/home Terms of Use (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Prime Period3 screens
Diamond Period Tracker4 screens

Verdict

The call

Prime Period and Diamond Period Tracker are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Prime Period sells 2 in-app purchases, starting at $0.99 per month and Diamond Period Tracker sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Prime Period versus Diamond Period Tracker: the parameters behind the verdict, then further details
ParameterPrime PeriodDiamond Period Tracker
PriceFreeFree
Update frequency—Every 4 weeks
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad — betteriPhone
Requires iOS16.616.6
Further details — not scored
Size1 MB11 MB
Age rating4+4+
DeveloperFigenbladElvin tansu Dogan

In-app purchases

2 purchases

Prime Period

Subscriptions2
  • Premium - Monthly$0.991 Month
  • Premium - Yearly$9.991 Year
2 purchases

Diamond Period Tracker

Subscriptions2
  • Monthly$9.991 Month
  • Yearly$69.991 Year

Questions

Is Prime Period free?
Prime Period is free to download, with in-app purchases available.
Is Diamond Period Tracker free?
Diamond Period Tracker is free to download, with in-app purchases available.
Do Prime Period or Diamond Period Tracker have ads?
Neither Prime Period nor Diamond Period Tracker shows ads.

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