Comparison

28X Private Period Tracker vs PeriShift

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

Head to head
About

28X Private Period Tracker

Understand your menstrual cycle with a privacy-focused period tracker. Log moods, symptoms, and gain insights into your body's patterns from first periods to menopause. All your data stays on your device, with no ads or data selling.

Highlights
  • Period and cycle tracking
  • Menstrual phase predictions
  • Mood, energy, and symptom logging
  • Clinically informed women's health content
  • Data stored locally on device
  • No ads, subscriptions, or data selling
Features
Read full description

28X Private Period™ is a free-to-use period tracker, privacy safe, designed to create a beautiful space to understand your cycle, from first periods to perimenopause and menopause. Your data stays yours. Always. No selling data. A women's health app built entirely around privacy. Free for everyone, everywhere. Discreet, clinically informed and very private. The first period tracker to achieve a 93% ORCHA rating. Periods are better on 28X. WHY WE’RE DIFFERENT Most period trackers rely on subscriptions, ads, or sharing user data to make money. 28X is the new way to track periods. - No subscriptions. Free for everyone, everywhere. - You have the power over your own data. It stays with you on your device. - No data selling, no data sharing. No cloud servers. - No ads. No subscriptions. No tracking. No paywalls. No locked features. - Calm, simple period tracking designed around privacy. Understand your body without giving up your data. - We build 28X alongside our users, listening to real feedback to shape what people actually want and need from the app. To help keep 28X free for everyone, you can contribute to an optional pay-it-forward feature that supports development and women and girls in vulnerable communities worldwide. No obligation. WHAT’S INSIDE THE APP Simple period tracking tools to help you understand your body. - Track Your Cycle - Period and cycle tracking - Clear menstrual phase predictions - Mood, energy, PMS and symptom logging - Patterns you can actually understand LEARN WOMEN'S HEALTH Supportive, clinically informed content designed to be clear, accessible, and empowering. Learn about: - Hormones and cycle phases - PMS and monthly changes - Endometriosis and PCOS - Perimenopause and menopause - Skin, mood, and energy shifts - Nutrition, lifestyle, contraception, and fertility PRIVACY FIRST - Your data stays with you - All data is stored on your device - No cloud storage - No tracking or profiling - No ads - No selling your data Health tracking built around you, not your data. FOR EVERYONE, EVERYWHERE 28X is free, global, and inclusive, designed for all backgrounds and life stages. Whether you are tracking your first period or navigating menopause, 28X helps you understand your body without giving up your privacy. 28X Private Period™ is not a medical device and doesn’t diagnose, monitor, prevent, treat or predict any health condition. It’s also not designed to help you get pregnant or avoid pregnancy. Always speak to a healthcare professional for personal medical advice.

About

PeriShift

Features
Read full description

You're not imagining it — and now you can prove it. Perimenopause can bring 30+ symptoms that come and go for years: hot flashes, sleepless nights, mood swings, brain fog, irregular cycles, and more. PeriShift helps you track them, see the patterns, and walk into your doctor's appointment with clear evidence instead of "I just don't feel like myself." TRACK WHAT MATTERS Log your day across eight areas in seconds: • Symptoms (39 to choose from, with severity) • Mood • Sleep • Stress • Cycle • Body • Exercise • Notes Add your own symptoms if yours aren't on the list. SEE IT ON A CALENDAR Your whole month at a glance, so you can spot the bad weeks before they surprise you again. SPOT THE PATTERNS PeriShift turns your daily logs into simple trends so you can finally see what's connected — which weeks are worst, what triggers a flare, and how your cycle ties to your symptoms. BRING PROOF TO YOUR DOCTOR Export a clean, organized PDF summary of your symptoms to share at your next appointment. No more trying to remember six weeks of bad sleep on the spot. LEARN WHAT'S HAPPENING 14 plain-English articles on perimenopause live inside the app — sleep, mood, brain fog, heart, bones, weight. No searching. No sales pitch. YOUR DATA NEVER LEAVES YOUR PHONE This is the part that matters most. PeriShift has no account, no cloud, and no tracking. Everything you log stays on your device — period. Your health is nobody's business but yours. WHO IT'S FOR Women navigating perimenopause who want to understand their bodies, advocate for themselves, and feel less alone in the shift. Track. Understand. Empower. SUBSCRIPTION PeriShift is free to try for 30 days. Premium keeps your trends, insights, doctor report, and medication log unlocked. • Monthly — $4.99 • Annual — $29.99 Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless you turn off auto-renew at least 24 hours before the current period ends. You can manage or cancel it in your Apple Account settings. Privacy Policy: https://peri-shift.com/privacy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

28X Private Period Tracker4 screens
PeriShift4 screens

Verdict

The call

The clearest difference is update cadence: PeriShift at daily against 28X Private Period Tracker's weekly. 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. 28X Private Period Tracker sells 1 one-off in-app purchase and PeriShift sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

28X Private Period Tracker ships an update weekly, PeriShift daily. The most recent releases landed on October 17, 2026 and October 14, 2026 respectively.

Scorecard1 real difference · 9 level
28X Private Period Tracker versus PeriShift: the parameters behind the verdict, then further details
Parameter28X Private Period TrackerPeriShift
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyWeeklyDaily — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.115.0 — better
Further details — not scored
Size100 MB41 MB
Age rating4+17+
Developer28xBook Weaver Publishing, LLC

In-app purchases

1 purchases

28X Private Period Tracker

One-time1
  • NEON Butterfly$1.99
2 purchases

PeriShift

Subscriptions2
  • PeriShift Monthly$4.991 Month
  • PeriShift Annual$29.991 Year

Questions

Is 28X Private Period Tracker free?
28X Private Period Tracker is free to download, with in-app purchases available.
Is PeriShift free?
PeriShift is free to download, with in-app purchases available.
Do 28X Private Period Tracker or PeriShift have ads?
Neither 28X Private Period Tracker nor PeriShift shows ads.
Which is updated more often, 28X Private Period Tracker or PeriShift?
28X Private Period Tracker ships an update weekly, and PeriShift daily. Most recently, 28X Private Period Tracker was updated on October 17, 2026 and PeriShift on October 14, 2026.

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