# JetShift vs Jet Lag Engine

The clearest difference is in-app purchases: Jet Lag Engine at none against JetShift's 3. JetShift's advantage is iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. JetShift sells 3 in-app purchases, starting at $4.99 per month. Jet Lag Engine asks for nothing beyond the download.

## The numbers

| Metric | JetShift | Jet Lag Engine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/jetshift-skip-jetlag/id6744546503/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Monetization | Freemium | — |
| Size | 71 MB | 4 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Jannik Obenhoff](https://appshunter.io/developer/1590139703) | [Dennis Van Dalen](https://appshunter.io/developer/1862992231) |

## What reviewers say

### JetShift

[App page](https://appshunter.io/ios/app/jetshift-skip-jetlag/id6744546503)

This app uses circadian rhythm science to help your body adjust to new time zones quickly. It provides personalized guidance on light exposure, sleep, melatonin, and caffeine intake to minimize jet lag symptoms like fatigue and sleeplessness.

**Highlights:** Circadian rhythm science, Personalized light exposure timing, Melatonin scheduling, Stepwise sleep shifts, Smart caffeine intake, Offline functionality, Calendar integration

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| JetShift Super - Monthly | $4.99 | per month |
| JetShift Super Annual Discount | $29.99 | per year |
| JetShift Super - Annual | $49.99 | per year |


### Jet Lag Engine

[App page](https://appshunter.io/ios/app/jet-lag-engine/id6791974132)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is JetShift free?

JetShift is free to download, with in-app purchases available.

### Is Jet Lag Engine free?

Jet Lag Engine is free to download, with no in-app purchases.

### Do JetShift or Jet Lag Engine have ads?

Neither JetShift nor Jet Lag Engine shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*