# Kolf vs Delta

The clearest difference is in-app purchases: Delta at none against Kolf's 1. Delta also leads on ads (none vs shown). Kolf's advantage is iOS requirement (12.0 vs 14.0). On price and device support there is nothing between them.

Both are free to download. Kolf sells 1 one-off in-app purchase. Delta asks for nothing beyond the download.

## The numbers

| Metric | Kolf | Delta |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Size | 126 MB | 73 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ciro Manna](https://appshunter.io/developer/1461361803) | [Ken Gullaksen](https://appshunter.io/developer/1523639355) |

## What reviewers say

### Kolf

[App page](https://appshunter.io/ios/app/kolf/id1617580386)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kolf - No More Ads | $1.99 | one-time |


### Delta

[App page](https://appshunter.io/ios/app/delta-v-trajectory/id6764410700)

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

**In-app purchases:** none


## Frequently asked questions

### Is Kolf free?

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

### Is Delta free?

Delta is free to download, with no in-app purchases.

### Do Kolf or Delta have ads?

Kolf shows ads; Delta does not.

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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.*