Timeshifter vs ARDAR
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Personalized jet lag plans
- Circadian Time™ advice
- Practicality Filter™
- Pre-travel adjustment advice
- Push notifications for advice
- Automatic detection of short trips
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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
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.
- 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
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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
Verdict
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
Both are free to download. Timeshifter sells 3 in-app purchases, starting at $24.99 per year. ARDAR asks for nothing beyond the download.
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.
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.
| Parameter | Timeshifter | ARDAR |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (2.6K ratings) — better | 4.6 (9 ratings) |
| Positive reviews | 92.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 2.6K — better | 9 |
| Update frequency | Every 9 days — better | Every 10 days |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Best chart rank | #28 — better | — |
| Devices | iPhone | iPhone, iPad, Apple Watch — better |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 64 MB | 14 MB |
| Age rating | 17+ | 4+ |
| Developer | Timeshifter Inc. | Villegas Ventures LLC |
Customer experience
Timeshifter
ARDAR
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
Timeshifter
- Timeshifter$24.991 Year
- discounted jet lag plan$4.99
- jet lag plan$9.99
ARDAR
No in-app purchases








