---
title: "Timeshifter - Reviews, Revenue and Downloads in Hong Kong SAR China | Apple App Store"
description: "Reduce jet lag with personalized plans based on the latest sleep and circadian science. Timeshifter creates a plan for every flight and time zone, tailored to your chronotype, sleep pattern, itinerary"
---

# Timeshifter — Hong Kong SAR China

![Timeshifter App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/74/22/e6/7422e601-534b-d060-e432-3c2d1f33a5c5/AppStore-0-0-1x_U007emarketing-0-8-0-85-220.png/434x0w.png)

**Developer:** [Timeshifter](https://apptail.io/developer/timeshifter-LXqb) (United States)
**Category:** Travel
**Rating:** 4.2/5 (14 ratings)
**Price:** Free
**Bundle ID:** com.timeshifter.timeshifter
**Store:** Apple App Store
**Country:** Hong Kong SAR China
**Version:** 2.8.0 (released 2026-11-09)
**Original Release:** 2018-06-20
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/hk/app/app/id1380684374)
**AppTail Page:** [https://apptail.io/app/timeshifter-jUS/hong-kong](https://apptail.io/app/timeshifter-jUS/hong-kong)

## Timeshifter Description
Reduce jet lag with personalized plans based on the latest sleep and circadian science. Timeshifter creates a plan for every flight and time zone, tailored to your chronotype, sleep pattern, itinerary and personal preferences.

Used by NASA astronauts, F1 teams, NBA players, Olympic athletes and frequent travelers - and rated "as good as it's going to get" by The New York Times.

- The Wall Street Journal: "Indispensable"
- Condé Nast Traveler: "Say goodbye to jet lag"
- WIRED: "Will help reset your [circadian] clock"
- Travel + Leisure: "Game-changer"

WHAT YOU GET
Jet lag plans that show exactly when to seek light, when to avoid it, when to sleep and when to nap, and how to use melatonin (optional) and caffeine correctly (optional) - hour by hour.

PROVEN RESULTS
Based on ~130,000 post-flight surveys:
- 96.4% of travelers who followed their plan avoided severe jet lag entirely.
- Travelers who ignored the advice were 6.2x more likely to experience severe jet lag - and 14.1x more likely to experience very severe jet lag.

YOUR FIRST PLAN IS FREE
Your first jet lag plan is free, with no commitment. After your free plan, you can buy plans as you go for US$9.99 per plan, or subscribe for unlimited plans at US$24.99.

KEY FEATURES
- Circadian Time™: advice timed to your circadian clock
- Practicality Filter™: adjusts advice to the "real world"
- Quick Turnaround®: automatically detects short trips
- Pre-travel advice: start adjusting before departure
- Push notifications: view advice without opening the app

JET LAG MYTHS VS. CIRCADIAN SCIENCE
Jet lag cannot be fixed with generic sleep advice, exercise, hydration, dietary supplements, special diets or fasting. None of these reset your circadian clock quickly to a new time zone.

Light is the key time cue that resets your circadian clock. Individually-timed light exposure and light avoidance - based on your chronotype, your normal sleep pattern and your itinerary - is the only way to adjust to a new time zone quickly. Get the timing wrong and jet lag gets worse.

Getting that timing right is complex and unintuitive, which is why generic advice fails. Timeshifter works as your jet lag calculator and planner, doing that timing for you.

WHY WE MADE TIMESHIFTER
We built Timeshifter to make circadian science accessible and help you apply it to reduce jet lag. It targets the underlying cause of jet lag - the disruption of your circadian clock - and reduces the symptoms that come with it, including insomnia, daytime sleepiness, fatigue and digestive discomfort.

Timeshifter was developed with Dr. Steven W. Lockley, a Harvard Medical School faculty member for over 20 years and former neuroscientist at Brigham and Women's Hospital. He is an international authority on circadian rhythms and sleep, with more than 30 years of clinical research experience in humans, and works with NASA astronauts and mission controllers, F1 teams, NBA players, national soccer teams and Olympic athletes.

Whether you are crossing one time zone or ten, on a long-haul flight or a quick turnaround, Timeshifter gives you a jet lag plan built for that trip.

Download Timeshifter and make jet lag history on your next flight.

These statements have not been evaluated by the Food and Drug Administration. Timeshifter is not intended to diagnose, treat, cure or prevent any disease, and is intended for healthy adults 18 years of age or older. Timeshifter is not intended for pilots and flight crew on duty.

Terms of Use: www.timeshifter.com/legal/terms-of-use
Privacy Policy: www.timeshifter.com/legal/privacy-policy

## Timeshifter Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/47/21/26/472126ac-effe-7baf-60ff-629f16186378/iPhone_6_U002c9in_-_20.png/1320x2868.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/be/8b/b3/be8bb387-e81a-9f21-375e-168c052fc0ff/iPhone_6_U002c9in_-_4.png/1320x2868.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/34/52/9b/34529b80-8720-c674-d3cf-8ab9c06b968c/iPhone_6_U002c9in_-_6.png/1320x2868.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/e2/82/05/e28205ee-f71c-8d1c-a36e-c9ecd9fbea32/iPhone_6_U002c9in_-_2.png/1320x2868.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/84/07/aa/8407aab5-2868-9301-07e4-dbb23e9538ad/iPhone_6_U002c9in_-_3.png/1320x2868.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/fb/28/a9/fb28a9ac-986d-bc27-1c20-209f7c679eb6/iPhone_6_U002c9in_-_23.png/1320x2868.png)
- [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/ff/9f/ba/ff9fba8e-9e15-6570-61b1-c5ef4f6ea7cf/iPhone_6_U002c9in_-_8.png/1320x2868.png)
- [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/4d/ed/79/4ded798a-59b2-6235-1a45-3c7f5cdb302c/iPhone_6_U002c9in_-_9.png/1320x2868.png)
- [Screenshot 9](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/93/21/4b/93214b80-62e4-bdb3-70dd-73a598385c64/iPhone_6_U002c9in_-_10.png/1320x2868.png)

## Timeshifter Rating Breakdown in Hong Kong SAR China
- 5 stars: 9 (64%)
- 4 stars: 3 (21%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 2 (14%)

## Timeshifter Reviews in Hong Kong SAR China

### ***** "A must have for long haul"
I have used Timeshifter since 2019 and it has completely changed how I handle long-haul travel. The app is based on the science of circadian rhythm adjustment and melatonin timing according to time zone changes.

I follow the app’s advice very strictly, especially regarding when to seek or avoid light exposure. I even bought a blue-light eyewear device so I could continue light exposure during flights while everyone else was sleeping in darkness.

The results have been remarkable. I now experience minimal jet lag even after long-haul flights, and I can usually resume work the next day functioning normally and efficiently. For frequent long-distance travellers, this app is absolutely worth it.
-- Lo MW, 2026-05-24

### ***** "A helpful app, highly recommended!"
I used to have bad jet lag and took me a week to adjust when travelling between Hong Kong and the UK, first time using this app and it has been helpful, my jet lag was insignificant going from HK to UK and mild from UK to HK. I have been recommending friends to use this app when travelling and would continue to recommend this app to people I know! Thank you for creating this useful app!
-- Asalice, 2025-08-26

### *---- "White screen"
White screen still exists after I downloaded the latest version.
-- Arena_607, 2025-03-26

### ***** "Highly Recommended"
I travel across multiple timezones very frequently for work. I am able to follow the plans for the most part but have to deviate at times. Following the plans has resulted in barely any to no jetlag and better energy. I haven’t struggled with jetlag since I first started using the Timeshifter plans.
-- Nina G S, 2024-12-10

### ***** "It works!"
Following the suggestions of this app will stop you getting jet-lag. At all. I have used it many times for travel from Asia - Europe, and Asia - North America (and back obviously). I rely on it these days. Works brilliantly - just enter your flight numbers and it does the rest.
-- Sechuaninamillion, 2024-07-23

[View all Timeshifter reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)

## Timeshifter In-App Purchases
| Item | Price |
|------|-------|
| Timeshifter | 198.00 H$ |
| jet lag plan | 88.00 H$ |
| discounted jet lag plan | 38.00 H$ |

## Timeshifter Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Grossing | South Africa | Travel | #12 |
| Top Grossing | Hong Kong SAR China | Travel | #13 |
| Top Grossing | Sweden | Travel | #16 |
| Top Grossing | India | Travel | #16 |
| Top Grossing | Denmark | Travel | #22 |
| Top Grossing | Japan | Travel | #27 |
| Top Grossing | Canada | Travel | #28 |
| Top Grossing | New Zealand | Travel | #32 |
| Top Grossing | Australia | Travel | #32 |
| Top Grossing | United States | Travel | #35 |
| Top Grossing | Ireland | Travel | #37 |
| Top Grossing | United Kingdom | Travel | #38 |
| Top Grossing | France | Travel | #45 |
| Top Grossing | China | Travel | #46 |
| Top Grossing | Russia | Travel | #53 |
| Top Grossing | Singapore | Travel | #55 |
| Top Grossing | Thailand | Travel | #64 |
| Top Grossing | Philippines | Travel | #67 |
| Top Grossing | United Arab Emirates | Travel | #68 |
| Top Grossing | Israel | Travel | #68 |
| Top Grossing | South Korea | Travel | #69 |
| Top Grossing | Greece | Travel | #70 |
| Top Grossing | Portugal | Travel | #71 |
| Top Grossing | Ecuador | Travel | #72 |
| Top Grossing | Finland | Travel | #73 |
| Top Grossing | Netherlands | Travel | #79 |
| Top Grossing | Colombia | Travel | #90 |
| Top Grossing | Peru | Travel | #91 |
| Top Grossing | Germany | Travel | #93 |
| Top Grossing | Mexico | Travel | #97 |

## Timeshifter Discovered Keywords
- timeshifter
- circadian rhythm
- circadian

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## Timeshifter Available In
- [United States](https://apptail.io/app/timeshifter-jUS/united-states)
- [United Kingdom](https://apptail.io/app/timeshifter-jUS/united-kingdom)
- [Australia](https://apptail.io/app/timeshifter-jUS/australia)
- [Canada](https://apptail.io/app/timeshifter-jUS/canada)
- [Germany](https://apptail.io/app/timeshifter-jUS/germany)
- [Netherlands](https://apptail.io/app/timeshifter-jUS/netherlands)
- [New Zealand](https://apptail.io/app/timeshifter-jUS/new-zealand)
- [Denmark](https://apptail.io/app/timeshifter-jUS/denmark)
- [France](https://apptail.io/app/timeshifter-jUS/france)
- [Switzerland](https://apptail.io/app/timeshifter-jUS/switzerland)
- [Mexico](https://apptail.io/app/timeshifter-jUS/mexico)
- [Italy](https://apptail.io/app/timeshifter-jUS/italy)
- [Ireland](https://apptail.io/app/timeshifter-jUS/ireland)
- [Sweden](https://apptail.io/app/timeshifter-jUS/sweden)
- [Spain](https://apptail.io/app/timeshifter-jUS/spain)
- [India](https://apptail.io/app/timeshifter-jUS/india)
- [Poland](https://apptail.io/app/timeshifter-jUS/poland)
- [Belgium](https://apptail.io/app/timeshifter-jUS/belgium)
- [Singapore](https://apptail.io/app/timeshifter-jUS/singapore)
- [Japan](https://apptail.io/app/timeshifter-jUS/japan)
- [Brazil](https://apptail.io/app/timeshifter-jUS/brazil)
- [Austria](https://apptail.io/app/timeshifter-jUS/austria)
- [Hong Kong SAR China](https://apptail.io/app/timeshifter-jUS/hong-kong)
- [South Africa](https://apptail.io/app/timeshifter-jUS/south-africa)
- [Portugal](https://apptail.io/app/timeshifter-jUS/portugal)
- [Colombia](https://apptail.io/app/timeshifter-jUS/colombia)
- [Finland](https://apptail.io/app/timeshifter-jUS/finland)
- [Israel](https://apptail.io/app/timeshifter-jUS/israel)
- [Norway](https://apptail.io/app/timeshifter-jUS/norway)
- [United Arab Emirates](https://apptail.io/app/timeshifter-jUS/united-arab-emirates)
- [Lithuania](https://apptail.io/app/timeshifter-jUS/lithuania)
- [Türkiye](https://apptail.io/app/timeshifter-jUS/turkey)
- [China](https://apptail.io/app/timeshifter-jUS/china)
- [Philippines](https://apptail.io/app/timeshifter-jUS/philippines)
- [Taiwan](https://apptail.io/app/timeshifter-jUS/taiwan)
- [Romania](https://apptail.io/app/timeshifter-jUS/romania)
- [Argentina](https://apptail.io/app/timeshifter-jUS/argentina)
- [Russia](https://apptail.io/app/timeshifter-jUS/russia)
- [Ukraine](https://apptail.io/app/timeshifter-jUS/ukraine)
- [Czechia](https://apptail.io/app/timeshifter-jUS/czechia)
- [Hungary](https://apptail.io/app/timeshifter-jUS/hungary)
- [South Korea](https://apptail.io/app/timeshifter-jUS/south-korea)
- [Bulgaria](https://apptail.io/app/timeshifter-jUS/bulgaria)
- [Egypt](https://apptail.io/app/timeshifter-jUS/egypt)
- [Thailand](https://apptail.io/app/timeshifter-jUS/thailand)
- [Slovakia](https://apptail.io/app/timeshifter-jUS/slovakia)
- [Bermuda](https://apptail.io/app/timeshifter-jUS/bermuda)
- [Malaysia](https://apptail.io/app/timeshifter-jUS/malaysia)
- [Greece](https://apptail.io/app/timeshifter-jUS/greece)
- [Indonesia](https://apptail.io/app/timeshifter-jUS/indonesia)
- [Malta](https://apptail.io/app/timeshifter-jUS/malta)
- [Dominican Republic](https://apptail.io/app/timeshifter-jUS/dominican-republic)
- [Slovenia](https://apptail.io/app/timeshifter-jUS/slovenia)
- [Saudi Arabia](https://apptail.io/app/timeshifter-jUS/saudi-arabia)
- [Croatia](https://apptail.io/app/timeshifter-jUS/croatia)
- [Chile](https://apptail.io/app/timeshifter-jUS/chile)
- [Luxembourg](https://apptail.io/app/timeshifter-jUS/luxembourg)
- [Peru](https://apptail.io/app/timeshifter-jUS/peru)
- [Pakistan](https://apptail.io/app/timeshifter-jUS/pakistan)
- [Armenia](https://apptail.io/app/timeshifter-jUS/armenia)
- [Azerbaijan](https://apptail.io/app/timeshifter-jUS/azerbaijan)
- [Bahrain](https://apptail.io/app/timeshifter-jUS/bahrain)
- [Belarus](https://apptail.io/app/timeshifter-jUS/belarus)
- [Cyprus](https://apptail.io/app/timeshifter-jUS/cyprus)
- [Algeria](https://apptail.io/app/timeshifter-jUS/algeria)
- [Ecuador](https://apptail.io/app/timeshifter-jUS/ecuador)
- [Kuwait](https://apptail.io/app/timeshifter-jUS/kuwait)
- [Cayman Islands](https://apptail.io/app/timeshifter-jUS/cayman-islands)
- [Kazakhstan](https://apptail.io/app/timeshifter-jUS/kazakhstan)
- [Lebanon](https://apptail.io/app/timeshifter-jUS/lebanon)
- [Sri Lanka](https://apptail.io/app/timeshifter-jUS/sri-lanka)
- [Madagascar](https://apptail.io/app/timeshifter-jUS/madagascar)
- [North Macedonia](https://apptail.io/app/timeshifter-jUS/north-macedonia)
- [Mali](https://apptail.io/app/timeshifter-jUS/mali)
- [Nigeria](https://apptail.io/app/timeshifter-jUS/nigeria)
- [Nepal](https://apptail.io/app/timeshifter-jUS/nepal)
- [Qatar](https://apptail.io/app/timeshifter-jUS/qatar)
- [Senegal](https://apptail.io/app/timeshifter-jUS/senegal)
- [Tunisia](https://apptail.io/app/timeshifter-jUS/tunisia)
- [Uzbekistan](https://apptail.io/app/timeshifter-jUS/uzbekistan)
- [Vietnam](https://apptail.io/app/timeshifter-jUS/vietnam)
- [Jordan](https://apptail.io/app/timeshifter-jUS/jordan)
- [Iceland](https://apptail.io/app/timeshifter-jUS/iceland)
- [Honduras](https://apptail.io/app/timeshifter-jUS/honduras)
- [Guatemala](https://apptail.io/app/timeshifter-jUS/guatemala)
- [Angola](https://apptail.io/app/timeshifter-jUS/angola)
- [El Salvador](https://apptail.io/app/timeshifter-jUS/el-salvador)
- [Estonia](https://apptail.io/app/timeshifter-jUS/estonia)
- [Venezuela](https://apptail.io/app/timeshifter-jUS/venezuela)
- [Costa Rica](https://apptail.io/app/timeshifter-jUS/costa-rica)
- [Botswana](https://apptail.io/app/timeshifter-jUS/botswana)
- [Brunei](https://apptail.io/app/timeshifter-jUS/brunei)
- [Uganda](https://apptail.io/app/timeshifter-jUS/uganda)
- [Barbados](https://apptail.io/app/timeshifter-jUS/barbados)
- [Panama](https://apptail.io/app/timeshifter-jUS/panama)
- [Uruguay](https://apptail.io/app/timeshifter-jUS/uruguay)
- [Namibia](https://apptail.io/app/timeshifter-jUS/namibia)
- [Latvia](https://apptail.io/app/timeshifter-jUS/latvia)
- [Kenya](https://apptail.io/app/timeshifter-jUS/kenya)

---

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