# OKN Drum vs Summit Optometry

The clearest difference is in-app purchases: Summit Optometry at none against OKN Drum's 1. Summit Optometry also leads on iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. OKN Drum sells 1 one-off in-app purchase. Summit Optometry asks for nothing beyond the download.

## The numbers

| Metric | OKN Drum | Summit Optometry |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (16 ratings)](https://appshunter.io/ios/app/okn-drum-optokinetic/id6474153180/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 46.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 days | — |
| Monetization | Paid | — |
| Size | 13 MB | 26 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [My Call Bag LLC](https://appshunter.io/developer/1243282862) | [Chengdu Weidike Medical Instruments Co., Ltd.](https://appshunter.io/developer/6793515823) |

## What reviewers say

### OKN Drum

[App page](https://appshunter.io/ios/app/okn-drum-optokinetic/id6474153180)

This app offers a digital optokinetic drum for vision testing and exercises. Customize stripe width, speed, and color, with options for pediatric targets. It also features a metronome and camera recording for eye movements.

**Highlights:** Adjustable stripe width and speed, Selectable black or red stripes, Pediatric targets (puppies, dinosaurs, animals), Full-screen mode, Integrated metronome, Record eye movements with camera, Upload custom images for drum

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Access | $4.99 | one-time |


### Summit Optometry

[App page](https://appshunter.io/ios/app/summit-optometry/id6793515821)

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

**In-app purchases:** none


## Frequently asked questions

### Is OKN Drum free?

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

### Is Summit Optometry free?

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

### Do OKN Drum or Summit Optometry have ads?

Neither OKN Drum nor Summit Optometry shows ads.

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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.*