Comparison

Timeshifter vs ARDAR

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

Head to head
About

Timeshifter

This app provides personalized plans to combat jet lag based on circadian science. It offers practical advice for light exposure and avoidance to help you adjust to new time zones quickly and reduce symptoms like insomnia and sleepiness.

Highlights
  • Personalized jet lag plans
  • Circadian Time™ advice
  • Practicality Filter™
  • Pre-travel adjustment advice
  • Push notifications for advice
  • Automatic detection of short trips
Features
Read full 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

About

ARDAR

This app uses augmented reality to overlay live aircraft information directly onto your camera view. Point your device at the sky to identify planes, track their routes, and see details like speed, altitude, and airline.

Highlights
  • AR aircraft labels over real sky
  • Live flight tracker data
  • Flight and plane radar views
  • Detailed aircraft information
  • Flight path visualization
  • Filters for focused spotting
  • Apple Watch companion map
Features
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Turn the sky into a live flight tracker. ARDAR is an AR flight radar and plane spotting app that places nearby aircraft directly over your camera view, so you can point your iPhone at the sky and see what is flying above you. Built for every plane spotter, aviation fan, traveler, and curious sky watcher, ARDAR makes air traffic feel visible, immediate, and real. Use ARDAR as an AR plane spotter, flight tracker, plane radar, and air traffic radar in one simple experience. See live nearby aircraft with callsigns, altitude, speed, heading, distance, route details, aircraft type, airline info, and more. Tap a plane in the sky to focus on it, follow its flight path, and stay flight aware without digging through a traditional map-first flight tracker. Whether you are plane spotting near an airport, watching arrivals and departures, tracking overhead flights from your backyard, or pairing the view with ATC or live ATC listening, ARDAR gives you a fast, visual way to understand the air traffic around you. Features: • AR aircraft labels over the real sky • Live nearby flight tracker data • Flight radar and plane radar views • Air traffic radar for local aircraft • Callsign, altitude, speed, heading, and distance • Route, origin, and destination details when available • Airline and aircraft identification • Flight path and trajectory visualization • Filters for focused plane spotting • Apple Watch companion map for nearby air traffic ARDAR is made for people who look up. Open the app, point at the sky, and know what is flying.

Screenshots

Timeshifter4 screens
ARDAR4 screens

Verdict

The call

The clearest difference is in-app purchases: ARDAR at none against Timeshifter's 3. ARDAR also leads on review sentiment (100% vs 92%) and device support (3 vs 1). Timeshifter's advantage is ratings volume (2.6K vs 9) and chart position (#28 vs unranked). On price, rating, update cadence and ads 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 sells 3 in-app purchases, starting at $24.99 per year. ARDAR asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for Timeshifter against 4.6 for ARDAR. That said, the two scores are not equally well evidenced: Timeshifter has 2.6K ratings behind it against 9, so its average is the more settled of the two. Written reviews are what separate them: 92% of Timeshifter's written reviews are positive against 100% of ARDAR's.

UpkeepUpdate frequency

Timeshifter ships an update every 9 days, ARDAR every 10 days. The most recent releases landed on September 24, 2026 and September 20, 2026 respectively.

Scorecard7 real differences · 4 level
Timeshifter versus ARDAR: the parameters behind the verdict, then further details
ParameterTimeshifterARDAR
PriceFreeFree
Rating4.7 (2.6K ratings) — better4.6 (9 ratings)
Positive reviews92.0% of reviews100.0% of reviews — better
Number of ratings2.6K — better9
Update frequencyEvery 9 days — betterEvery 10 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank#28 — better—
DevicesiPhoneiPhone, iPad, Apple Watch — better
Requires iOS17.0 — better26.0
Further details — not scored
Size64 MB14 MB
Age rating17+4+
DeveloperTimeshifter Inc.Villegas Ventures LLC

Customer experience

Timeshifter

All ratings2,635 ratings
Positive90.8%
Neutral2.1%
Negative7.1%
Written reviews1,459 reviews
Positive92.0%
Neutral1.6%
Negative6.4%

ARDAR

All ratings9 ratings
Positive88.9%
Neutral0.0%
Negative11.1%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Timeshifter

Reported bugs

2 issues
  • App crashing or getting stuck on a white screen
  • Issues with account login and data loss

Requested features

3 requests
  • Ability to adjust plan for unexpected schedule changes
  • Integration with fitness trackers or sleep apps
  • Recommendations for meal timing and nutrition

ARDAR

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Timeshifter

Subscriptions1
  • Timeshifter$24.991 Year
One-time2
  • discounted jet lag plan$4.99
  • jet lag plan$9.99
None

ARDAR

No in-app purchases

Questions

Is Timeshifter free?
Timeshifter is free to download, with in-app purchases available.
Is ARDAR free?
ARDAR is free to download, with no in-app purchases.
Which has better reviews, Timeshifter or ARDAR?
Timeshifter is rated higher. Timeshifter averages 4.7 out of 5 from 2.6K ratings, while ARDAR averages 4.6 from 9 ratings.
Do Timeshifter or ARDAR have ads?
Neither Timeshifter nor ARDAR shows ads.
Which is updated more often, Timeshifter or ARDAR?
Timeshifter ships an update every 9 days, and ARDAR every 10 days. Most recently, Timeshifter was updated on September 24, 2026 and ARDAR on September 20, 2026.

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