# BioClock — Circadian rhythm companion

> Circadian rhythm companion (iPhone/iPad app by Jakub Tencl.)

- Source: https://appshunter.io/ios/app/bioclock/id6761010883 (this page in markdown: same URL + `.md`)
- Developer: [Jakub Tencl](https://appshunter.io/developer/1560908217)
- Category: Health & Fitness
- Price: Free
- Age rating: 4+
- Requires: iOS 16.2 · 2 MB
- Languages: American English
- Released: 2026-04-03
- Data updated: 2026-06-05
- User reviews in markdown: https://appshunter.io/ios/app/bioclock/id6761010883/reviews.md

## What is BioClock?

BioClock is a privacy-first wellbeing companion for understanding rhythm, sleep timing, and BioTime.

It estimates:
• BioTime
• circadian phase
• rhythm support
• predicted sleep window
• calm mood-oriented pattern summaries

BioClock is designed for local-first use. Core estimates run directly on the device, and optional sources such as Apple Health and manual input remain under your control.

Features include:
• a live BioTime dashboard
• 7-day and 30-day trends
• manual sleep and mood inputs
• bedtime reminder settings
• a Home Screen widget for BioTime at a glance
• optional Live Activity visibility on supported devices
• local wellbeing and clinician-support summaries
• multilingual interface
• local export

BioClock is informational and observational. It is not a diagnostic device, psychiatric evaluator, or medical judgment tool.


## Version history (last 2 releases)

### 1.0.1 — 2026-04-13

Improves iPad support, alarm behaviour, localisation, Apple Health labelling, and reliability of input saving.

### 1.0 — 2026-04-04

No release notes.

## More apps by Jakub Tencl

- [iHypnosis](https://appshunter.io/ios/app/ihypnosis/id1560908215)
- [iHypnosis™ Clinic](https://appshunter.io/ios/app/ihypnosis-clinic/id1634038418)
- [PainTrace](https://appshunter.io/ios/app/paintrace/id6770285671)

All apps by Jakub Tencl: https://appshunter.io/developer/1560908217

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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 2026-06-05.*