# Daikon: Period Tracker — A cute calendar for your cycle

> A cute calendar for your cycle (iPhone/iPad app by Yi-Chiun Wu.)

- Source: https://appshunter.io/ios/app/daikon-period-tracker/id6822485511 (this page in markdown: same URL + `.md`)
- Developer: [Yi-Chiun Wu](https://appshunter.io/developer/909354647)
- Category: Health & Fitness, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.0 · 5 MB
- Languages: American English, French (France), German (Germany), Japanese, Korean, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan)
- Released: 2026-10-15
- Data updated: 2026-10-26

## What is Daikon?

A little care, every day.

Daikon is a simple, joyful period tracker. Log your period, see what may be coming next, and let a few little white radishes brighten your day. When your period arrives, they turn into red carrots. On estimated ovulation day, one wears a flower.

YOUR RHYTHM AT A GLANCE
A colorful cycle ring shows period days, the estimated fertile window, ovulation, and today. See the next three predicted periods and upcoming fertility dates.

ONE LITTLE LOG
Tap “My period started” or “My period ended.” The babies jump, spin, and shower you with leaves. Edit past days in the calendar; neighboring days join automatically.

PREDICTIONS THAT KEEP GOING
Daikon learns from up to six recent cycles, or uses a cycle length you choose. If you haven’t logged a new period, estimates keep rolling forward. A gentle prompt helps you update your history.

GENTLE, OPTIONAL REMINDERS
Choose a period reminder, an estimated fertile-window reminder, or a “Did your period start?” check-in. All are off until you turn them on. Reminders are local notifications.

APPLE HEALTH, IF YOU WANT IT
Turn on “Sync to Apple Health” in Settings to save each logged period day as menstrual flow in the Health app. It’s off by default, reads back only what Daikon wrote, and keeps your Health data if you turn it off. “Delete all logs” also removes what Daikon wrote there.

PRIVATE LITTLE GARDEN
No account, symptoms diary, community, or subscription. Period history is stored on your device and can sync through your private iCloud when available. Your health data is never sent to the advertising SDK or used to target ads. If you turn on Apple Health sync, period days are also saved in Health.

On an unfolded iPhone Duo, a 13-inch iPad in portrait or any iPad in landscape, today and the calendar sit side by side.

Designed for iPhone and iPad, in English, Traditional Chinese, Simplified Chinese, Japanese, Korean, Spanish, French, and German, with a warm light and dark appearance and support for Reduce Motion.

Advertising: non-personalized interstitial ads may appear after logging and its animation finish, at most once every four minutes. Your first session is ad-free. Ads never block logging. A one-time “Remove ads” purchase in Settings turns ads off for good, with “Restore purchases” on your other devices.

Predictions are estimates, not medical advice or contraception. Cycle timing can vary.

Support: https://easonwumac.github.io/daikon/support.html
Privacy: https://easonwumac.github.io/daikon/privacy.html

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove ads | $9.99 | one-time |


## Is Daikon safe?

Not enough ratings yet to assess Daikon.

## Is Daikon legit?

Daikon: Period Tracker appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Daikon is 75 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.2.0 — 2026-10-25

Sync to Apple Health: turn it on in Settings to save the period days you log to Health. It's off until you turn it on, and Delete all logs also removes what Daikon saved there.

Remove ads: a one-time purchase in Settings removes all ads for good, with Restore purchases for your other devices.

### 1.1.0 — 2026-10-24

Made for iPhone Duo: unfold to see today and the calendar side by side, and stay on the month you were viewing when you fold or unfold. Holding your phone sideways puts the status and log button beside the ring.

### 1.0.2 — 2026-10-23

Now available in eight languages, adding Simplified Chinese, Japanese, Korean, Spanish, French and German. Rating prompts no longer appear alongside ads or privacy choices.

### 1.0.1 — 2026-10-16

Fixed a case where editing could drop future entries, and date shifts when editing across time zones.
General stability improvements.

### 1.0.0 — 2026-10-15

No release notes.

## More apps by Yi-Chiun Wu

- [AutoCombo](https://appshunter.io/ios/app/autocombo/id909354644)
- [Precision Parking 3D](https://appshunter.io/ios/app/precision-parking-3d/id6816430472)
- [ZaiRi: Plant Care Journal](https://appshunter.io/ios/app/zairi-plant-care-journal/id6816606160)
- [Inside: Phone Check](https://appshunter.io/ios/app/inside-phone-check/id6816782363)
- [Tuck: Receipt Keeper](https://appshunter.io/ios/app/tuck-receipt-keeper/id6821961896)

All apps by Yi-Chiun Wu: https://appshunter.io/developer/909354647

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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 2026-10-26.*