Timeshifter vs FX Lens Pro
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 reduce jet lag based on sleep science and your individual chronotype. It guides you on when to seek or avoid light, sleep, nap, and use optional supplements like melatonin and caffeine.
- Personalized jet lag plans
- Circadian Time™ advice
- Practicality Filter™
- Quick Turnaround® feature
- Pre-travel adjustment advice
- Push notifications
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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
FX Lens Pro
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See a price. Point your camera. Know what it costs in your currency instantly. FX Lens Pro is a fast camera currency converter for travelers and shoppers. Scan price tags, menus, receipts, and market signs, then see the converted price directly in the viewfinder. **POINT. SCAN. CONVERT.** Turn your camera into a live price converter. **Scan prices instantly** Point at a price tag, menu, sign, or receipt and see the conversion in seconds. **Built for real-world price formats** Reads prices such as "7,49 €", "$4 50", "50 c", superscript cents, commas, decimals, and other formats used around the world. **Automatic currency detection** FX Lens Pro can recognize when a price uses a different currency than expected, helping prevent accidental conversions using the wrong currency. **Keep scanning as you shop** Move from one price to the next without repeatedly entering numbers. **TYPE IT OR WRITE IT** No camera needed. Enter any amount using the large, simple keypad, or write a price with your finger and let FX Lens Pro recognize your handwriting. However you enter the price, your currency conversion is ready immediately. **LIVE EXCHANGE RATES, EVEN WHEN YOU'RE OFFLINE** Travel does not always come with perfect internet. FX Lens Pro stores your latest exchange rates on your device, so conversions can continue when you lose your connection. • Live exchange rates when online • Offline currency conversion using your last available rates • See exactly how old an offline rate is • Set your own custom exchange rate whenever you want • Support for 160+ currencies • Optional suggestions for the local currency while traveling FX Lens Pro never hides when a rate is outdated. **SAVE PRICES FROM YOUR TRIP** Found something worth remembering? Save the scan. Each saved item can include: • The original photo • Detected price and currency • Converted amount • Location, if you choose to allow it Build a personal record of what things cost as you travel. Search past scans, compare prices between cities, revisit purchases, or share an interesting find. **MADE FOR INTERNATIONAL TRAVEL** Whether you're shopping in Tokyo, ordering dinner in Paris, browsing a market in Bangkok, or checking prices back home, FX Lens Pro helps make foreign prices easier to understand. • 160+ currencies • 19 supported languages • Converts from almost anywhere to almost anywhere • Follows your phone's language **PRIVATE BY DESIGN** Your shopping and travel data stays yours. • No account required • No sign-up • No ads • No tracking • Camera recognition happens on your device • Camera images are not uploaded for price recognition • Back up saved scans to a folder you choose • Optional passcode encryption for backups Open the app and start converting. **SEE THE PRICE. KNOW THE COST. TRAVEL WITH CONFIDENCE.** Download FX Lens Pro and turn your phone into an instant camera currency converter wherever you go. FX Lens Pro is designed as a convenience tool for travelers and shoppers and is not a financial service. Currency conversions depend on the price detected and the exchange rate available at the time. Always verify important amounts before making a purchase or financial decision.
Screenshots
Verdict
The clearest difference is in-app purchases: FX Lens Pro at none against Timeshifter's 3. FX Lens Pro also leads on update cadence (every 2 days vs weekly) and iOS requirement (15.5 vs 17.0). Timeshifter's advantage is chart position (#30 vs unranked). On price, ads and device support 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. FX Lens Pro asks for nothing beyond the download.
Timeshifter ships an update weekly, FX Lens Pro every 2 days. The most recent releases landed on November 11, 2026 and October 31, 2026 respectively.
| Parameter | Timeshifter | FX Lens Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (2.7K ratings) — better | — |
| Positive reviews | 91.8% of reviews | — |
| Number of ratings | 2.7K — better | — |
| Update frequency | Weekly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Best chart rank | #30 — better | — |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 17.0 | 15.5 — better |
| Further details — not scored | ||
| Size | 62 MB | 129 MB |
| Age rating | 17+ | 4+ |
| Developer | Timeshifter Inc. | Handrow Cahyadi |
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
FX Lens Pro
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
FX Lens Pro
No in-app purchases
Questions
Is Timeshifter free?
Is FX Lens Pro free?
Do Timeshifter or FX Lens Pro have ads?
Which is updated more often, Timeshifter or FX Lens Pro?
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