# RhythmBio — Biorhythm chart & mood journal

> Biorhythm chart & mood journal (iPhone/iPad app by Darryll Stephen.)

- Source: https://appshunter.io/ios/app/rhythmbio/id6792810928 (this page in markdown: same URL + `.md`)
- Developer: [Darryll Stephen](https://appshunter.io/developer/6792810930)
- Category: Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 5 MB
- Languages: American English
- Released: 2026-11-05
- Data updated: 2026-11-13

## What is RhythmBio?

Some days you're sharp, some days you're flat. RhythmBio charts your physical, emotional, intellectual and intuitive cycles from your birthday, so you can plan around your best days.

The four classic biorhythm cycles, physical (23 days), emotional (28), intellectual (33) and intuitive (38), become one daily rhythm score, a live wave you can scrub through, and a plain-English sense of what today might suit.

FREE, ALWAYS
• Your daily rhythm score and day type, with the cycles lifting it and holding it back
• The live wave and a 90-day forecast, with a heads-up on crossing days
• A journal to log how you actually felt, and see how closely it tracks the maths
• An optional morning notification

PRO
• An AI-written morning briefing, personal to your cycles and to how you've actually felt
• Family Hub: add your partner, kids and friends, see everyone's day at a glance, and get coaching for each person, from what to say today to handling a crossing day
• Calendar scoring: link your calendar and every upcoming event is rated against your rhythm

TRY PRO FREE FOR 7 DAYS
Every new account gets all of Pro for its first week, with no payment and no card needed. After that, keep it with a monthly or yearly subscription, or carry on free.

DON'T TAKE OUR WORD FOR IT
Log how you feel for a week. Your journal shows how closely your real energy tracked the maths. Your call after that.

HONEST BY DESIGN
Biorhythms are a lens for reflection, not science or medical advice. RhythmBio suggests; it never tells you what will happen.

SUBSCRIPTIONS
Pro is available as a monthly or yearly auto-renewing subscription. Payment is charged to your Apple ID when you confirm. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period, and your account is charged for renewal within the 24 hours before the period ends. Manage or cancel any time in your App Store account settings.

Terms of Use: https://rhythmbio.app/terms
Privacy Policy: https://rhythmbio.app/privacy

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Pro Annual | $39.99 | per year |
| Pro Monthly | $4.99 | per month |


## Is RhythmBio safe?

Not enough ratings yet to assess RhythmBio.

## Is RhythmBio legit?

RhythmBio has limited verification signals. The AppsHunter Legitimacy Score for RhythmBio is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 3 releases)

### 1.0.2 — 2026-11-11

Small improvements to how RhythmBio asks for feedback, and a new "Rate RhythmBio" option in More. Thanks for using RhythmBio.

### 1.0.1 — 2026-11-11

Your journal now checks in once you've logged a few days, so you can tell us how RhythmBio is working for you. Thanks for every rating.

### 1.0 — 2026-11-05

No release notes.

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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 2026-11-13.*