Comparison

Timeshifter Shift Work vs SleepSync

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Timeshifter Shift Work

Optimize your sleep and energy levels with science-based guidance tailored for shift workers. This app provides personalized advice to combat circadian disruption, improving performance, health, and quality of life. It replaces common myths with evidence-based interventions to reset your internal clock.

Highlights
  • Personalized circadian clock advice
  • Practical real-world adjustments
  • Quick shift schedule entry
  • Commute and preparation time inclusion
  • Fatigue prediction alerts
  • Timely advice notifications
Features
Read full description

Combat shift work disruption with personalized advice based on the latest circadian science. This groundbreaking app empowers shift workers to optimize their sleep, performance, health, and quality of life with science-based guidance developed by world-renowned circadian scientists. Fast Company: “Congratulations Timeshifter on helping to change the world.” Timeshifter — Shift Work Edition — was developed to help shift workers reduce the underlying problem of circadian and sleep disruption inherent in shift work. With Timeshifter, you will receive highly personalized advice based on your sleep pattern, chronotype, work schedule, and personal preferences. SHIFT WORK MYTHS VS. CIRCADIAN SCIENCE Shift workers face a serious biological challenge: misalignment between their internal circadian rhythms and their work schedules. This circadian disruption leads to insomnia, excessive sleepiness, poor performance, and increased long-term health risks. Popular advice — like drinking more coffee, using supplements, or simply “getting more rest” — misses the mark. These approaches don’t address the root cause: your circadian misalignment. It’s time to replace the myths with real science. Generic tips won’t solve circadian disruption. Only evidence-based interventions that "reset" your circadian rhythms and manage circadian timing can effectively reduce the negative effects of shift work. THE REAL SCIENCE OF SHIFT WORK // In your brain, a circadian clock regulates the rhythm of your day. // Shift work causes your sleep and other behaviors to occur at biologically inappropriate times, resulting in fatigue, poor sleep, and long-term health risks. // Light is the most powerful cue for resetting your circadian clock. The correct timing of light exposure and light avoidance is the foundation of any circadian intervention to improve alertness and sleep quality. If your timing is off, it can make things worse. WHY SHIFT WORKERS LOVE TIMESHIFTER // Based on the latest sleep and circadian science // Optimizes your sleep, alertness, and performance // Reduces the negative effects of shift work on productivity, health, and quality of life Using Timeshifter is as simple as taking small actions at specific times. KEY FEATURES // Circadian Time™: Advice is based on your individual circadian clock // Practicality Filter™: Adjusts advice to work in the "real world" // Quick Shift Entry: Add work schedules across multiple dates in seconds // Commute Time: Include commute and “get ready” times to ensure practical advice // Fatigue Prediction: Warns you when to be extra cautious to avoid mistakes and accidents // Advice Notifications: Get timely advice even without opening the app NO EXPENSIVE EQUIPMENT REQUIRED Timeshifter is a highly empowering experience, and it requires no special equipment. Just a sleep mask and your favorite dark sunglasses. TRY IT FREE A 30-day free trial is available — no commitment required! After your trial, you can choose to subscribe monthly ($6.99/mo) or annually ($69.99/yr). 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. Terms of use: www.timeshifter.com/terms/terms-of-use Privacy policy: www.timeshifter.com/terms/privacy-policy

About

SleepSync

Optimize your sleep cycles to wake up feeling refreshed. This app calculates your ideal bedtime and wake-up time based on sleep science, offering insights into deep sleep and REM stages. Enjoy a user-friendly interface designed for a better night's rest.

Highlights
  • Personalized sleep schedule
  • Deep sleep and REM analysis
  • Intuitive sleep calculator
  • Advanced sleep cycle tracking
  • User-friendly interface
  • Privacy focused
Features
Read full description

Wake up feeling refreshed and rejuvenated every morning with SleepSync, your personal sleep calculator and bedtime scheduler. Designed to enhance your sleep quality by optimizing your sleep cycles, SleepSync ensures you fall asleep and wake up at the perfect times for maximum restfulness. Why SleepSync? Personalized Sleep Schedule: Discover your ideal bedtime and wake-up time based on scientific sleep cycle analysis, tailored specifically to your lifestyle. Deep Sleep and REM Analysis: Dive deep into your sleep patterns with advanced tracking of your deep sleep and REM cycles, enabling targeted improvements to your sleep quality. Features: Intuitive Sleep Calculator: Simply input your desired wake-up time to calculate the best times to go to sleep. Advanced Sleep Cycle Tracking: Leverage the power of sleep science to analyze your sleep phases and adjust your bedtime for optimal rest. User-Friendly Interface: Enjoy a seamless experience with SleepSync's elegant and easy-to-navigate design. Privacy First: Your sleep data belongs to you. SleepSync ensures your information is secure and never shared. Whether you're looking to improve your sleep quality, wake up more refreshed, or simply find the best time to go to bed, SleepSync is here to transform your nights and mornings. Start your journey towards better sleep and a more energetic day with SleepSync.

Screenshots

Timeshifter Shift Work4 screens
SleepSync3 screens

Verdict

The call

The clearest difference is in-app purchases: SleepSync at none against Timeshifter Shift Work's 2. Timeshifter Shift Work's advantage is ads (none vs shown) and rating (4.0 vs 3.7). On price, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Timeshifter Shift Work sells 2 in-app purchases, starting at $6.99 per month. SleepSync asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Timeshifter Shift Work holds the better App Store score, 4.0 against 3.7. That said, the two scores are not equally well evidenced: Timeshifter Shift Work has 21 ratings behind it against 3, so its average is the more settled of the two.

Scorecard5 real differences · 5 level
Timeshifter Shift Work versus SleepSync: the parameters behind the verdict, then further details
ParameterTimeshifter Shift WorkSleepSync
PriceFreeFree
Rating4.0 (21 ratings) — better3.7 (3 ratings)
Positive reviews51.7% of reviews—
Number of ratings21 — better3
Update frequencyEvery 3 weeks—
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhoneiPhone, iPad — better
Requires iOS17.216.0 — better
Further details — not scored
Size65 MB10 MB
Age rating4+4+
DeveloperTimeshifter Inc.APPS BAY LIMITED

Customer experience

Timeshifter Shift Work

All ratings21 ratings
Positive71.4%
Neutral9.5%
Negative19.0%
Written reviews29 reviews
Positive51.7%
Neutral10.3%
Negative37.9%

SleepSync

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%

In-app purchases

2 purchases

Timeshifter Shift Work

Subscriptions2
  • Shiftwork$6.991 Month
  • Shiftwork$69.991 Year
None

SleepSync

No in-app purchases

Questions

Is Timeshifter Shift Work free?
Timeshifter Shift Work is free to download, with in-app purchases available.
Is SleepSync free?
SleepSync is free to download, with no in-app purchases.
Which has better reviews, Timeshifter Shift Work or SleepSync?
Timeshifter Shift Work is rated higher. Timeshifter Shift Work averages 4.0 out of 5 from 21 ratings, while SleepSync averages 3.7 from 3 ratings.
Do Timeshifter Shift Work or SleepSync have ads?
SleepSync shows ads; Timeshifter Shift Work does not.

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