# KOWOLL 28E vs TERRAINA

The clearest difference is iOS requirement: KOWOLL 28E at 10.0 against TERRAINA's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 27, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | KOWOLL 28E | TERRAINA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 45 MB | 103 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Kalman Navigation](https://appshunter.io/developer/1363987394) | [Jiangsu Dongcheng M&E Tools Co., Ltd.](https://appshunter.io/developer/1717367087) |

## What reviewers say

### KOWOLL 28E

[App page](https://appshunter.io/ios/app/kowoll-28e/id6443854438)

**In-app purchases:** none


### TERRAINA

[App page](https://appshunter.io/ios/app/terraina/id6472632254)

**In-app purchases:** none


## Frequently asked questions

### Is KOWOLL 28E free?

KOWOLL 28E is free to download, with no in-app purchases.

### Is TERRAINA free?

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

### Do KOWOLL 28E or TERRAINA have ads?

Neither KOWOLL 28E nor TERRAINA shows ads.

### Which is updated more often, KOWOLL 28E or TERRAINA?

KOWOLL 28E ships an update every 3 weeks, and TERRAINA every 3 weeks. Most recently, KOWOLL 28E was updated on October 27, 2026 and TERRAINA on October 3, 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.*