# GRAntz vs COL

The clearest difference is update cadence: COL at every 16 months against GRAntz's every 38 months. COL also leads on iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

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

GRAntz ships an update every 38 months, COL every 16 months. The most recent releases landed on October 21, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | GRAntz | COL |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 38 months | **Every 16 months** |
| Size | 2 MB | 3 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Naoya Takahashi](https://appshunter.io/developer/1301211980) | [tomoharu ishibashi](https://appshunter.io/developer/1651189866) |

## What reviewers say

### GRAntz

[App page](https://appshunter.io/ios/app/grantz/id1470380806)

**Features:** macOS Compatibility

**In-app purchases:** none


### COL

[App page](https://appshunter.io/ios/app/col/id6443984996)

**In-app purchases:** none


## Frequently asked questions

### Is GRAntz free?

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

### Is COL free?

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

### Do GRAntz or COL have ads?

Neither GRAntz nor COL shows ads.

### Which is updated more often, GRAntz or COL?

GRAntz ships an update every 38 months, and COL every 16 months. Most recently, GRAntz was updated on October 21, 2026 and COL on October 14, 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.*