Comparison

Period or Not vs ephira

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

Head to head
About

Period or Not

This private period tracker stores all your cycle data locally on your device, with no account or server required. It learns your unique cycle patterns to provide accurate predictions and offers optional encrypted backups to your own cloud storage.

Highlights
  • Local data storage
  • No account required
  • Learns personal cycle patterns
  • Predicts period and ovulation days
  • Optional encrypted iCloud backup
  • Data export to file
Features
Read full description

Your cycle data belongs to you. Not to us, not to advertisers, not to anyone. Period or Not is a period tracker with no account and no server of ours. Your period history, your symptoms and your settings are written to your phone's own storage and stay there. Nothing reaches us, because there is nowhere for it to go. Want a backup? Export a file and keep it yourself, or switch on an encrypted copy in your own iCloud. Both are off until you choose them, and neither one passes through us. How it works • Tap a day to log your period. Hold it to add how you felt. • Log the first day and the rest fill in for you. • See what is coming: predicted period days, ovulation, and where you are in your cycle right now. • Bring the history you already have with a read-only import from Apple Health. • Export everything to a file you keep, whenever you want. It learns your cycle, not the average one Most trackers assume 28 days. This one takes the median of your own last six to twelve cycles, so a single unusual month does not drag your prediction around. It learns how long your period actually lasts the same way, and only from the days you tapped yourself, never from the days it filled in for you. What you get • A calendar you can scroll through, forwards and backwards, forever • Symptom and mood tags, plus any tag you want to write yourself • A Stats tab: cycle day, current phase, your averages, your most-logged symptoms • Reminders one to seven days before your period, in the morning, afternoon or evening, scheduled on your phone rather than sent from a server • Optional sync to your Apple or Google calendar, with your own calendar name and your own event titles • Light, Dark or System appearance • Backup and restore through a file you control Everything is free There is no subscription, no in-app purchase and no locked feature. Export, import, Apple Health, statistics, reminders: all of it, for everyone. Why we are different We went fully local. There are no servers and no database of your cycles. Other apps say "secure cloud storage" and mean their storage, on their machines. The only cloud here is your own iCloud, switched off until you turn it on, and encrypted with a key that never leaves your devices. Nothing leaves your phone unless you choose it, and none of it comes to us. • No analytics, no behavioural tracking, no third-party SDKs • No data selling, because we do not have your data • No account to create and no email to hand over Built by a woman, for women. This is not a VC-backed data business. It is an indie app made by someone who uses it and cares about who else can read it. Period apps have made headlines for privacy failures. We built the version that cannot fail that way. Your health data is yours. Period. ---

About

ephira

This period tracker prioritizes your privacy by encrypting all data locally on your device. Log your cycle, symptoms, moods, and medications with confidence, knowing your information is secure and can be protected with biometrics or a password.

Highlights
  • Local data encryption
  • Track flow, symptoms, moods
  • Log medications and birth control
  • Biometric and password lock
  • Open source code available
  • Data deletion option
Features
Read full description

Stay aware of your cycle without sacrificing your privacy. Ephira is a secure period-tracker that keeps your data encrypted locally on your device. Track Your Health: Log menstrual flow, symptoms, moods, medications, birth control, and notes. Privacy First: Data is encrypted and never leaves your device. It can be locked behind biometrics (Face ID/Fingerprint) or a custom password, and can be deleted at any time. Open and Transparent: Ephira is open source under the MIT license, and you can review the code at any time on Github.

Screenshots

Period or Not4 screens
ephira4 screens

Verdict

The call

The clearest difference is rating: ephira at 5.0 against Period or Not's 3.0. ephira also leads on device support (3 vs 1). Period or Not's advantage is update cadence (every 3 weeks vs every 6 months). On price, ratings volume, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

ephira holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 3 and 3 respectively.

UpkeepUpdate frequency

Period or Not ships an update every 3 weeks, ephira every 6 months. Both last shipped on November 4, 2026.

Scorecard3 real differences · 7 level
Period or Not versus ephira: the parameters behind the verdict, then further details
ParameterPeriod or Notephira
PriceFreeFree
Rating3.0 (3 ratings)5.0 (3 ratings) — better
Positive reviews50.0% of reviews—
Number of ratings33
Update frequencyEvery 3 weeks — betterEvery 6 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.415.1 — better
Further details — not scored
Size44 MB34 MB
Age rating9+17+
DeveloperAntonija PekAlexander Ulbrich

Customer experience

Period or Not

All ratings3 ratings
Positive33.3%
Neutral33.3%
Negative33.3%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

ephira

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Period or Not

No in-app purchases

None

ephira

No in-app purchases

Questions

Is Period or Not free?
Period or Not is free to download, with no in-app purchases.
Is ephira free?
ephira is free to download, with no in-app purchases.
Which has better reviews, Period or Not or ephira?
ephira is rated higher. Period or Not averages 3.0 out of 5 from 3 ratings, while ephira averages 5.0 from 3 ratings.
Do Period or Not or ephira have ads?
Neither Period or Not nor ephira shows ads.
Which is updated more often, Period or Not or ephira?
Period or Not ships an update every 3 weeks, and ephira every 6 months. Most recently, Period or Not was updated on November 4, 2026 and ephira on November 4, 2026.

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