# Back In Pack vs JetShift

The clearest difference is in-app purchases: Back In Pack at none against JetShift's 3. On price, update cadence, 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. Back In Pack asks for nothing beyond the download.

Back In Pack ships an update every 2 weeks, JetShift fortnightly. The most recent releases landed on October 6, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Back In Pack | JetShift |
| --- | --- | --- |
| 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 | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | — | Freemium |
| Size | 8 MB | 71 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Mark Goodlad](https://appshunter.io/developer/1624709781) | [Jannik Obenhoff](https://appshunter.io/developer/1590139703) |

## What reviewers say

### Back In Pack

[App page](https://appshunter.io/ios/app/back-in-pack/id1624709779)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Back In Pack free?

Back In Pack is free to download, with no in-app purchases.

### Is JetShift free?

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

### Do Back In Pack or JetShift have ads?

Neither Back In Pack nor JetShift shows ads.

### Which is updated more often, Back In Pack or JetShift?

Back In Pack ships an update every 2 weeks, and JetShift fortnightly. Most recently, Back In Pack was updated on October 6, 2026 and JetShift on October 13, 2026.

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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.*