# NerdCycle: Period Tracker — Cycle tracker for couples

> Cycle tracker for couples (iPhone/iPad app by VLADO IVANKOVIC.)

- Source: https://appshunter.io/ios/app/nerdcycle-period-tracker/id6761985145 (this page in markdown: same URL + `.md`)
- Developer: [VLADO IVANKOVIC](https://appshunter.io/developer/1892304588)
- Category: Health & Fitness, Lifestyle
- Price: Free with in-app purchases
- Age rating: 12+
- Requires: iOS 17.0 · 19 MB
- Languages: American English, Croatian, Dutch, French (France), German (Germany), Italian, Polish, Brazilian Portuguese, European Spanish
- Released: 2026-06-19
- Data updated: 2026-08-30
- User reviews in markdown: https://appshunter.io/ios/app/nerdcycle-period-tracker/id6761985145/reviews.md

## What is NerdCycle?

NerdCycle is the cycle tracker designed for two — track your period, fertility, and daily wellness, and share it with your partner. No accounts. No data collection. Everything stays on your iPhone and your private iCloud.

WHY NERDCYCLE

• Built for couples — share your cycle data with your partner so they can see what phase you're in and how to be supportive
• Privacy first — no analytics, no third-party tracking, no servers in the loop
• Beautiful pixel-perfect design with light and dark modes
• 7-day free trial. Yearly subscription or one-time lifetime purchase

CYCLE TRACKING

• Period predictions with confidence indicators
• Fertile window and ovulation forecasting
• Phase-aware insights for menstrual, follicular, ovulation, and luteal phases
• Cycle regularity score and prediction accuracy stats
• Daily tips tailored to your current phase

DAILY LOG

• Mood, flow, energy, sleep, symptoms
• Custom symptoms — add your own
• Water intake, exercise, basal body temperature (BBT)
• Cervical mucus (when you're trying to conceive)
• Quick notes for every day

PARTNER MODE

• Invite your partner with a private iCloud share — just send one link
• They see your phase, alert level, and partner-specific guidance
• Conversation tips, support kit, and "do today" suggestions tailored to her phase
• Stop sharing anytime in Settings

INSIGHTS & CHARTS

• Cycle length history and trend
• Mood and sleep correlations
• Top symptoms by phase
• Energy and sex drive patterns
• BBT chart with ovulation shift detection
• Monthly summary reports

APPLE INTEGRATIONS

• Apple Health: optional read/write for menstrual flow and BBT
• Home screen widgets for quick cycle check
• Apple Watch complications
• Live Activity on Lock Screen and Dynamic Island
• Notifications for upcoming period, fertile window, and partner phase changes

EXPORT YOUR DATA

• CSV export for your records
• PDF doctor report for clinic visits
• Delete everything anytime in Settings

PRICING

NerdCycle is free to download with a 7-day free trial. After the trial, choose one of two options:

• Yearly Subscription — $9.99 per year, auto-renewable
• Lifetime — $29.99 one-time purchase

Subscriptions auto-renew unless cancelled at least 24 hours before the period ends. Manage or cancel in iOS Settings → Apple ID → Subscriptions.

Privacy Policy: https://vladoivankovic.com/NerdCycle/privacy.php
Terms of Use: https://vladoivankovic.com/NerdCycle/terms.php

NerdCycle is not a medical device. Predictions are estimates — always consult a healthcare professional for medical decisions.

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| NerdCycle Premium | $9.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| NerdCycle Lifetime | $29.99 | one-time |



## Version history (last 5 releases)

### 1.5.1 — 2026-08-28

• Days where you only logged a basal temperature now count as logged — your streak and calendar history may improve retroactively.
• VoiceOver now reads the quick stats and 7-day outlook properly.
• Translation fixes: several stats on the home screen were showing English in all languages.
• Small reliability improvements.

### 1.5 — 2026-08-26

Your temperature, without the typing.

• New: if you track basal body temperature, NerdCycle now reads it from Apple Health each morning — no more typing it in. Nothing you entered yourself is ever overwritten, and imported readings are labelled so you always know where a number came from.
• Irregular and PCOS cycles now get the BBT chart too — it used to be tucked away in trying-to-conceive mode only.
• Partner profile: if your logged cycles disagree with the cycle length you set, you're now offered a one-tap correction — the same gentle nudge the main profile has had.
• Partner profile: ending a pregnancy now offers the right path for what actually happened, instead of a single button.
• Partner profile: Backup and Restore have arrived.
• Translation and layout fixes.

### 1.4.6 — 2026-07-30

Never hunt for the period button again.

• Logging your period is now a clear, solid button right at the top of Today — it used to be a faint tile further down the screen.
• New: in the days just before your period is due, a gentle prompt appears so you can log it the moment it starts, even if it arrives early.
• Irregular and PCOS mode keeps working the way it should — no false "starting tomorrow" guesses when your prediction is a range.
• Fixed: the period and ovulation buttons now appear in your language instead of English.
• Refreshed App Store screenshots.

This update came straight from a user who couldn't find where to log an early period. If something feels awkward, tell us — we read everything.

### 1.4.5 — 2026-07-23

Partner linking you can trust — plus cleaner translations everywhere.

• New: see when your partner actually joins your invite — with a clear "invite sent" status until they do.
• Failed invite links now explain themselves and can be retried — no more silent dead ends.
• The partner daily briefing now carries real phase-specific guidance instead of a generic reminder.
• New: log your sex drive — the Insights chart finally has real data to show.
• Fixed garbled special characters (é, ñ, ż, ä…) across all translations.
• Localization and accessibility improvements throughout.

### 1.4.4 — 2026-07-15

Smarter, and in your language.

• New: when your logged cycles differ from your set cycle length, NerdCycle now suggests an update — one tap to accept, nothing changes without you.
• What's New notes now appear on partner profiles too.
• Partner mode: clear guidance when her synced data hasn't been updated in a while.
• Apple Watch complications are now fully localized, along with previously untranslated texts across the app.
• Fixes and refinements.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-30.*