# Ontime: Sleep & Weight Loss — Daily Habits Better Health

> Build daily health habits based on sleep, fasting, activity, and light timing. (iPhone/iPad app by Circadian Biosystems Inc.)

- Source: https://appshunter.io/ios/app/ontime-sleep-and-weight-loss/id1564303902 (this page in markdown: same URL + `.md`)
- Developer: [Circadian Biosystems Inc](https://appshunter.io/developer/1564303904)
- Category: Health & Fitness, Lifestyle
- Price: Free with in-app purchases
- Rating: 3.64/5 from 11 App Store ratings · 5 written reviews indexed
- Age rating: 12+
- Requires: iOS 15.6 · 143 MB
- Languages: English
- Released: 2022-01-17
- Data updated: 2026-07-07
- Monetization: subscription
- User reviews in markdown: https://appshunter.io/ios/app/ontime-sleep-and-weight-loss/id1564303902/reviews.md

## What is Ontime?

Health and fitness in daily habits with Ontime Health. Here we take the phrase ‘timing is everything’ and make it a practical, paid-subscription program for health and performance. 

Get into your daily routine through check ins related to four areas of health, sleep, fasting, activity and light (e.g. sun and screen time). By developing these daily habits we get into a routine. A routine measuring streaks of fasting, sleep, light health and activity. This creates a lifestyle for top health and performance based on science.

While diet and nutrition have always been a mainstay of health. Now, WHEN we eat is important along with what we eat. 

World Class Research
The Ontime app brings the user the simple rules for smart and easy fasting into our life. The fasting or intermittent fasting approach to health has been studied for years in the lab of Satchin Panda, PhD one of the most published and widely cited circadian rhythms and fasting researchers. Small changes are the most sustainable. At Ontime we take our inspiration from the decades of research from Dr Panda. Focused on realistic goals while recognizing everyone has a life to accommodate.

Fasting and meal timing
Fasting has become a common regiment based in part on this research and now we’re introducing simple daily fasting routines customized to fit goals and interests

Sleep and recovery
Adding in the power of sleep. Sleep is a critical part of the day leading to further performance benefits. We know that after a good night's sleep its smart to start the day with a fast before our first meal, limiting screen time and workout timing are factors brought together for better sleep performance.

Light and Dark mode - Start each day, but watch your screen time!
Then light and activity as part of the daily routing will complement the fasting to optimize when our body systems are working. We want our body to be able to focus naturally on the daily cycles of recovery, feeding, exercise and rebuilding. Light and dark themes help.

Exercise
Activity and timing of workouts are also key to optimal health. For example, exercise timing for best muscle performance is an exciting part of the new learnings. Body clocks are set to support physical activity in the earlier parts of the day, and this is enhanced even more when you are following an intermittent fasting routine. Exercise in the morning, especially in the sun, will help you to feel more rested and awake

We are excited to close the gap between the top athletes learning, living and playing longer at the top of their game and bringing that same experience to our users.

Performance and Longevity
Increasingly timing is everything in how top performers stay in the game longer. The learnings from this longevity research are included throughout the content where you will find health tips and content on the latest research.

Focus on challenges important to you

Whether you want to lose weight, gain weight, live healthier longer, improve your energy the protocols developed from understanding circadian rhythms are here to help. The challenges explored in science include pre-diabetes, diabetes, cancer, liver disease, obesity and heart disease. In collaboration with leading physicians Dr Panda’s lab has conducted research including thousands of data points to help see us shift our health back to peak performance.

These topics have been featured in many great health science discussions over the years. In particular between Satchin Panda and Dr Rhonda Patrick. More recently Dr Panda’s protocol was detailed by Andrew Huberman from the Huberman Lab. We’re delighted to make this app incorporate more detail since the early days when Dr Panda and other's works inspired many fasting apps. 

Dr Panda authored The Circadian Diabetes Code and The Circadian Code. These works detail the science that inspired the simplicity and the core habits promoted in this app.

Apple Standard EULA applies.
http://www.apple.com/legal/itunes/appstore/dev/stdeula

## Key features

- Daily habit tracking
- Sleep optimization
- Intermittent fasting routines
- Activity and light exposure monitoring
- Science-based health insights
- Personalized goal setting

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Annual Subscription | $69.99 | per year |
| 1 Month Subscription | $9.99 | per month |
| Monthly, 1 week free | $8.99 | per month |
| 3 Month, 1 week free | $24.99 | per 3 months |
| Annual, 1 Week Free | $59.99 | per year |
| 3 Month Subscription | $29.99 | per 3 months |


## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/ontime-sleep-and-weight-loss/id1564303902/reviews.md

### 5/5 — Great app!

*2024-09-18, version 1.2.4*

This has helped me to become really mindful of my screen time, sleeping habits and eating habits. My sleep is definitely improving and I’ve even lost 5lbs! 

Would highly recommend

### 3/5 — Should be able to sync with appleHealth.

*2023-04-26*

No reason why I should HAVE to imput activity and sleep data. Should be able to opt in to sync with apple health… nice as a way to gamefy a habit tracker but not able to add other habits…. Value prob seems somewhat limited so far

### 1/5 — Not free

*2023-04-26*

I thought it was free. I don’t want just a free trial period.

### 3/5 — Too buggy

*2023-03-27*

I see the value in this app for determining habits and tracking for success. I won’t continue after the free trial because it’s hard to use. Nearly impossible on iPad. I wanted to go back to yesterday and finish tracking but cannot see a way. The scrolling calendar / time feature is hard to use especially on the iPad. For now I’ll stick to a paper habit tracker.

### 5/5 — Making me feel so good!

*2022-11-05, version 0.6.0*

Finally an app that helps me follow Dr Panda’s program. I starting following the program a couple of years ago and just having dinner before 6pm and waiting for 1 hour before having a meal in the morning has made a huge difference. Great app to track how I’m doing!

## Frequently asked questions about Ontime

### What is Ontime's primary focus?

Ontime focuses on building healthier daily habits across four key areas: sleep, fasting, activity, and light exposure. It aims to improve overall health and performance by timing these activities based on scientific research.

### Does Ontime offer a free trial?

Yes, Ontime offers a 1-week free trial for all its subscription plans, including monthly, 3-month, and annual options. This allows users to experience the app's features before committing to a paid subscription.

### How much does Ontime cost?

Ontime offers several subscription plans. Monthly plans range from $8.99 to $9.99, 3-month plans are $24.99 to $29.99, and the annual plan is $59.99. All plans include a 1-week free trial.

### What kind of fasting does Ontime support?

Ontime supports intermittent fasting routines, drawing inspiration from research on circadian rhythms and meal timing. It provides simple daily fasting routines customized to fit user goals and interests.

### What devices is Ontime available on?

Ontime is available on iPhone, iPad, and iPod. It is designed for users who want to track their health habits across Apple devices.

### How often is Ontime updated?

The latest version of Ontime is 1.5.6, and it was last updated on March 18, 2026. This indicates a recent update, suggesting ongoing development and support for the application.

### What is the age rating for Ontime?

Ontime has an age rating of 12+. This means it is considered appropriate for users aged 12 and older, covering a wide range of individuals interested in health and fitness.

### Does Ontime have ads?

No, Ontime does not have advertisements. As a paid subscription program, it provides an ad-free experience for users focused on their health and performance.

## Version history (last 5 releases)

### 1.7.15 — 2026-06-05

Hi all, 

We’re excited about this release. 

We introduce the Ontime score. This gives us a way to see in one place how, fasting, sleep and light work together. The higher the better, and you don’t need to be a superhero. It’s all about the routine.

Timing is everything!

### 1.6.16 — 2026-05-14

Hello again, 

The one to one human coaching has had real impact. We hear you and have made some key updates. See your circadian day with the daily light and fasting zones for getting results fast. Morning and evening routines are clearly visualized and customized to the user. Timing is everything!

### 1.5.6 — 2026-03-18

Hello Ontimers, 

Update to the daily challenges, and the Ontime health graph gets some updates. Keep moving out there. Timing is everything. Catch you next time.

### 1.5.5 — 2026-03-04

Hi Everyone, 

Light tracking is popular for better sleep. We’ve updated the graphs with this release to see your Sleep, Fasting, and Light impact all in one place. Light and Sleep are superpowers for health. Who knew? Ontimer’s did! Check it out. We also gave the daily skills page a makeover. Looking good.

### 1.4.7 — 2026-02-22

Hi members,
Back again with new updates coming quick. Now the light tracker, or Lux Check, is prominent. Also, the key fasting zone is easier to track that you’re hitting it to get the most out of the program. Drop a message to your coach. Let us know what you think. 
Ontime -  Learn it. Live it. Timing is everything.

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## More apps by Circadian Biosystems Inc

- [GO Cardio](https://appshunter.io/ios/app/go-cardio/id6447795118)

All apps by Circadian Biosystems Inc: https://appshunter.io/developer/1564303904

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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 2026-07-07.*