# Jet Lag vs Jet Lag Engine

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

Both are free to download. Jet Lag sells 3 in-app purchases, starting at $14.99 per year. Jet Lag Engine asks for nothing beyond the download.

## The numbers

| Metric | Jet Lag | Jet Lag Engine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (2 ratings)](https://appshunter.io/ios/app/jet-lag-sleep-time-shift/id6766160800/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Monetization | Free with in-app purchases | — |
| Size | 26 MB | 4 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Pavel Ilin](https://appshunter.io/developer/1081786723) | [Dennis Van Dalen](https://appshunter.io/developer/1862992231) |

## What reviewers say

### Jet Lag

[App page](https://appshunter.io/ios/app/jet-lag-sleep-time-shift/id6766160800)

This app creates personalized travel plans to help you adjust your sleep schedule to new time zones. It provides guidance on light exposure, caffeine intake, and sleep timing to minimize jet lag and help you arrive refreshed.

**Highlights:** Personalized sleep schedules, Light therapy recommendations, Caffeine intake timing, Pre-flight, in-flight, post-arrival guidance, Multiple time zone calculations, Save favorite routes

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Individual) | $14.99 | per year |
| Pro (Family) | $24.99 | per year |
| One Trip | $3.99 | one-time |


### 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 Jet Lag free?

Jet Lag 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 Jet Lag or Jet Lag Engine have ads?

Neither Jet Lag 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.*