# Tsubomi - Fertility & Cycle — Gentle BBT & cycle journal

> Gentle BBT & cycle journal (iPhone/iPad app by Starcrown Inc.)

- Source: https://appshunter.io/ios/app/tsubomi-fertility-and-cycle/id6763236990 (this page in markdown: same URL + `.md`)
- Developer: [Starcrown Inc](https://appshunter.io/developer/1082624152)
- Category: Lifestyle, Health & Fitness
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 6 MB
- Languages: American English, Danish, French (France), German (Germany), Japanese, Korean, Brazilian Portuguese, Chinese (Simplified, China), European Spanish
- Released: 2026-04-23
- Data updated: 2026-08-30
- User reviews in markdown: https://appshunter.io/ios/app/tsubomi-fertility-and-cycle/id6763236990/reviews.md

## What is Tsubomi?

Tsubomi is a gentle fertility & menstrual cycle journal for women who want to know their body better.

Record your basal body temperature each morning, and Tsubomi automatically detects your cycle phase — menstrual, follicular, ovulation, or luteal. Ovulation and next-period predictions are shown quietly, without pressure.

―――
● A minute a morning, a lifetime of understanding
― Enter BBT from 36.00 to 38.00°C in 0.05°C steps
― Log mood and symptoms with emoji and chips
― One page a day, one minute to complete

● Your cycle, beautifully visualized
― BBT line chart across your last two cycles
― Phase coloring: menstrual, follicular, fertile, luteal
― Average cycle length and variability at a glance

● Reminders that don't push
― Gentle nudge the day before predicted ovulation
― Soft heads-up three days before your period
― Never aggressive, never guilt-inducing

● Privacy by design
― All data stored only on your device
― No cloud, no server, no third parties

―――
【Tsubomi Pro】
・Unlimited cycle history
・Cycle and BBT pattern insights
・CSV export for your records

Monthly: ¥480 (eligible customers may receive a 7-day free trial)
Yearly: ¥4,800 (eligible customers may receive a 7-day free trial, about ¥400/mo)

The purchase sheet shows eligibility and current pricing. Subscriptions renew automatically. Manage or cancel in Apple Account settings at least 24 hours before renewal.

Optional consumable tips are available separately to support development.

Privacy: https://starcrown.co.jp/privacy
Terms: https://starcrown.co.jp/terms

―――
Note: Tsubomi is not a medical device and does not provide medical advice. For questions about pregnancy, fertility treatments, or reproductive health, please consult your healthcare provider.

Made by Starcrown, Inc.

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Tsubomi Pro Monthly | $2.99 | per month |
| Tsubomi Pro Yearly | $29.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Bouquet | $3.99 | one-time |
| Bud | $0.99 | one-time |
| Flower | $1.99 | one-time |



## Version history (last 5 releases)

### 1.2.8 — 2026-08-24

Made daily logging gentler and easier to keep up. Added rotating daily reflection prompts, included reflection notes in Pro CSV exports, and improved immediate Pro UI updates after purchase or restore.

### 1.2.7 — 2026-08-10

Improved purchase and restore status feedback and added a clear restore entry in Settings.

### 1.2.6 — 2026-08-08

Improved subscription disclosure and restore guidance.

### 1.2.5 — 2026-08-08

Added restore and Pro status confirmation from Settings.

### 1.2.4 — 2026-08-03

Improved Tsubomi Pro and cycle review.

## More apps by Starcrown Inc

- [Shikutoku - 淑女のための優しい世界](https://appshunter.io/ios/app/shikutoku/id1421649436)
- [まとめα - スカッと体験談まとめ](https://appshunter.io/ios/app/id1460784798)
- [Arukucchi: Walking Pet Raising](https://appshunter.io/ios/app/arukucchi-walking-pet-raising/id6761110380)
- [Rosy Life - Done Diary](https://appshunter.io/ios/app/rosy-life-done-diary/id6761161263)
- [kirari](https://appshunter.io/ios/app/kirari/id6761170476)
- [onesec - 1秒Vlog](https://appshunter.io/ios/app/onesec-1vlog/id6761184844)

All apps by Starcrown Inc: https://appshunter.io/developer/1082624152

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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.*