# Koehler Tutor — user reviews

> 7 indexed App Store user reviews of Koehler Tutor by Andrew Barlow, rated 4.40/5 from 8 ratings.

- Source: https://appshunter.io/ios/app/koehler-tutor/id1281328178/reviews
- App overview in markdown: https://appshunter.io/ios/app/koehler-tutor/id1281328178.md
- Rating breakdown: 5★ 6 · 4★ 1 · 3★ 0 · 2★ 0 · 1★ 1

## Most critical reviews (7 lowest-rated)

### 1/5 — Зачем обманывать людей

*2023-05-05*

Это не микроскоп!!!

**Developer response:** Of course it’s not a microscope! It’s an app on your phone. It’s intended to be a tutorial in setting Koehler illumination.  Leaving a one star review for a free app is really unfair.

### 1/5 — Poor experience

*2022-09-17, version 1.15*

Purchased due to high reviews.  Could not use it at all.  Tutorial unhelpful.  Came to Goal 3 and couldn’t do anything else.  Unclear how one takes an image.  Help button doesn’t have any information just 4 steps which you cannot even complete.
To top it up accompanied with a viral button to install all sort of apps from google.  I don’t even use google.  Absolutely awful experience and now I don’t know how to get my money back.

### 1/5 — Фуууу

*2021-09-28*

Сделали лучше нормальный микроскоп!!!

**Developer response:** I work long hours in my own time to make these apps, and give them to the microscopy community for free.  I think it’s pretty mean spirited to leave a one star review for a free app.  You don’t even explain what you think the problem is.

### 3/5 — забивнушка

*2021-09-26*

ну прикольно

### 4/5 — Beautiful but limited

*2019-02-17, version 1.13*

This is a beautifully worked tutorial on setting up kohler illumination  but that is all it does. It could be a star part of a broader app on microscopy but by itself it is too limited to be worthwhile for many people. I hope the developer takes this further

### 5/5 — Playfully learning! Fantastic!

*2018-09-02*

This app is great. It lets you learn about how to do Koehler’s illumination in a great playful way, going through all the steps one by one with a nice explanation. 
Now I won’t have any excuses for bad Koehler alignment anymore ;)

### 5/5 — Excellent Tutorial

*2018-08-20, version 1.11*

Although I would prefer to see no Adverts:
This is a very effective interactive tutorial.
... Nicely done.
.
.
[reply to developer's response]

My personal preference would be see a 'paid for' option; although perhaps that puts me in a minority of one.

Frankly;  I not investigated the  economics of the advert-sponsored business model, so can offer no valid opinion.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*