# EyeTesterPro vs i

The clearest difference is price: i at Free against EyeTesterPro's $40.99. i also leads on update cadence (every 2 months vs every 37 months). EyeTesterPro's advantage is iOS requirement (10.0 vs 15.6). On review sentiment, ads, in-app purchases and device support there is nothing between them.

i is free to download; EyeTesterPro costs $40.99 up front. Neither carries in-app purchases, so what you see is what you pay.

EyeTesterPro ships an update every 37 months, i every 2 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | EyeTesterPro | i |
| --- | --- | --- |
| Price | $40.99 | **Free** |
| Rating | — | **[1.0 (4 ratings)](https://appshunter.io/ios/app/i-nter-shot2-for-microscope/id1028324053/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 37 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Size | 8 MB | 146 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [FUSO PRECISION](https://appshunter.io/developer/382022791) | [Microscope Network Co., Ltd.](https://appshunter.io/developer/1028324052) |

## What reviewers say

### EyeTesterPro

[App page](https://appshunter.io/ios/app/eyetesterpro/id426303650)

Perform eye tests using your iPhone or iPad. Features single-device testing with adjustable charts and a two-device 'Connect mode' for remote operation. Ideal for quick vision checks at home.

**Highlights:** Single device eye testing, Two-device 'Connect mode' via Bluetooth, Adjustable eye chart distance (1-5 meters), Adjustable eye chart size, Remote control and display modes, Randomized chart angle adjustment

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

**In-app purchases:** none


### i

[App page](https://appshunter.io/ios/app/i-nter-shot2-for-microscope/id1028324053)

Capture high-quality microscope images and videos with advanced features. This app allows for scale display, manual adjustments for white balance and exposure, and a unique pass shutter for vibration-free photography. Manage your captured images in a dedicated list and preview on external displays.

**Highlights:** High-quality microscope photography, Scale and comment display, Electron Microscope and Monochrome modes, Pass Shutter for vibration-free capture, Manual White Balance and Exposure Correction, Dedicated photo list management, External display preview

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

**In-app purchases:** none


## Frequently asked questions

### Is EyeTesterPro free?

EyeTesterPro costs $40.99, with no in-app purchases.

### Is i free?

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

### Do EyeTesterPro or i have ads?

Neither EyeTesterPro nor i shows ads.

### Which is updated more often, EyeTesterPro or i?

EyeTesterPro ships an update every 37 months, and i every 2 months. Most recently, EyeTesterPro was updated on November 1, 2026 and i on November 6, 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.*