# Wotter vs ELMS Aviation

The clearest difference is update cadence: Wotter at every 2 weeks against ELMS Aviation's every 2 months. ELMS Aviation's advantage is iOS requirement (13.0 vs 15.1). 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.

Wotter ships an update every 2 weeks, ELMS Aviation every 2 months. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Wotter | ELMS Aviation |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Size | 74 MB | 31 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Wotter Group Limited](https://appshunter.io/developer/1523455776) | [ELMS Aviation Limited](https://appshunter.io/developer/1650221556) |

## What reviewers say

### Wotter

[App page](https://appshunter.io/ios/app/wotter/id1523455654)

**Features:** Vision Pro support

**In-app purchases:** none


### ELMS Aviation

[App page](https://appshunter.io/ios/app/elms-aviation/id6443879484)

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

**In-app purchases:** none


## Frequently asked questions

### Is Wotter free?

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

### Is ELMS Aviation free?

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

### Do Wotter or ELMS Aviation have ads?

Neither Wotter nor ELMS Aviation shows ads.

### Which is updated more often, Wotter or ELMS Aviation?

Wotter ships an update every 2 weeks, and ELMS Aviation every 2 months. Most recently, Wotter was updated on October 29, 2026 and ELMS Aviation on October 27, 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.*