# KORElab vs Peterson Grapplers

The clearest difference is ads: KORElab at none against Peterson Grapplers's shown. Peterson Grapplers's advantage is update cadence (every 3 weeks vs every 6 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

KORElab ships an update every 6 weeks, Peterson Grapplers every 3 weeks. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | KORElab | Peterson Grapplers |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Size | 77 MB | 93 MB |
| Requires iOS | 15 | 15 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KORElab Performance](https://appshunter.io/developer/1834538237) | [PushPress, Inc.](https://appshunter.io/developer/688595778) |

## What reviewers say

### KORElab

[App page](https://appshunter.io/ios/app/korelab/id6749638135)

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

**In-app purchases:** none


### Peterson Grapplers

[App page](https://appshunter.io/ios/app/peterson-grapplers/id6769604112)

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

**In-app purchases:** none


## Frequently asked questions

### Is KORElab free?

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

### Is Peterson Grapplers free?

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

### Do KORElab or Peterson Grapplers have ads?

Peterson Grapplers shows ads; KORElab does not.

### Which is updated more often, KORElab or Peterson Grapplers?

KORElab ships an update every 6 weeks, and Peterson Grapplers every 3 weeks. Most recently, KORElab was updated on October 30, 2026 and Peterson Grapplers on October 25, 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.*