# Shift vs Engine

The clearest difference is ads: Shift at none against Engine's shown. Shift also leads on iOS requirement (13.0 vs 15.1). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Shift sells 6 in-app purchases, starting at $4.99 per 7 days and Engine sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Shift ships an update weekly, Engine every 10 days. The most recent releases landed on October 11, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Shift | Engine |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 10 days |
| Size | 123 MB | 54 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pakotec](https://appshunter.io/developer/1531565879) | [Les Nants](https://appshunter.io/developer/1807100390) |

## What reviewers say

### Shift

[App page](https://appshunter.io/ios/app/shift-turn-scroll-into-growth/id6753281174)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $4.99 | per 7 days |
| Monthly Subscription | $9.99 | per month |
| Monthly Plan | $12.99 | per month |
| Yearly Plan | $29.99 | per year |
| Yearly Subscription | $39.99 | per year |
| Yearly Plan | $49.99 | per year |


### Engine

[App page](https://appshunter.io/ios/app/engine-boost-your-vo2max/id6756730497)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $9.99 | per month |
| Yearly Plan | $39.99 | per year |


## Frequently asked questions

### Is Shift free?

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

### Is Engine free?

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

### Do Shift or Engine have ads?

Engine shows ads; Shift does not.

### Which is updated more often, Shift or Engine?

Shift ships an update weekly, and Engine every 10 days. Most recently, Shift was updated on October 11, 2026 and Engine on September 30, 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.*