# ServeLab — user reviews

> 7 indexed App Store user reviews of ServeLab by Fuzzy Yellow Balls, LLC.

- Source: https://appshunter.io/ios/app/servelab/id6746733042/reviews
- App overview in markdown: https://appshunter.io/ios/app/servelab/id6746733042.md

## Most critical reviews (7 lowest-rated)

### 1/5 — zu teuer!

*2026-04-04*

viel zu teuer! schade weil an sich eine gute idee. 350€ nur für aufschlag ist zu viel. das muss auch günstiger gehen vielleicht mit werbung ansonsten buche ich mir einfach einen trainer und hab für weniger geld mehr davon.

### 1/5 — 300$ per year paywall

*2026-03-29*

This buggy app which doesn’t work is behind a 300$ dollar per year subscription. Insanely steep price for something that doesn’t help your game at all. Much less worth 30 dollars a month. Feels like a rush job. There are definitely better alternatives to this.

### 1/5 — The worse part is the AI ‘support’

*2026-03-08*

Uploaded a video of my serve to the app, and the feedback I got was ‘no mistakes’.

The support team consists of an AI robot waffling on about general issues. It’s told me to add better prompts ‘comparing it to top pros’, (fairly sure there is no option to add prompts) ‘take a side shot for more accurate analysis’ (a direct contradiction to the instructions). ‘The app is probably analysing general flow and not biomechanics’.

The app is also really clunky and slow.

Don’t trust these slick YouTube videos. So far it’s been a complete waste of money.

### 1/5 — underdeveloped

*2025-10-05*

his product feels completely raw and underdeveloped — hard to believe they’re charging a premium for it. The so-called “AI” serve evaluation gives ridiculous and inaccurate feedback; I even tested it by recording a player who didn’t serve at all, and it still produced detailed “issues” in every stage of the serve. It’s a great idea in theory, but in its current state, it simply doesn’t work. Definitely not worth $60 a month — and by the way, the video processing alone takes a good 15 minutes.

**Developer response:** Hey thanks for the feedback.

So Bert was training on videos of people serving, and it assumes that when someone uploads a video, there's someone serving in it.  So when you uploaded a video with no actual serve, Bert was still looking for all the stuff we training it to look for - that's why you got a long list of mistakes.  Bert is basically saying, "Hey I didn't see you do XYZ in this video."

In terms of the processing time, we now have it down to under a minute :-)

Thanks again for the feedback.  Helps us improve Bert.

Will

### 2/5 — Sizing and comparison issues

*2026-07-26*

Three issues - 1 - data and screens get clipped when viewing on phone so can’t see all info. Nothing I can do to fix this and very frustrating. 2 - requested to be compared to a female player and always compared to a male player (usually Jannik, i wish i was a 6’4” male pro player, i am not). 3 - if I reverse the camera to shoot my serve the AI somehow puts the racquet in my LEFT hand and treats me like a lefty. It’s bizarre.

### 2/5 — Too EXPENSIVE

*2026-06-21*

Looks like a super interesting app and was excited to see how well the model was trained. However I realised just as I went to use the ai model that it is too expensive!! $49/ month is way too much money when I had no idea if the model will even work.
Giving it 2 stars instead of 1 tho because I’m interested by this and hope it’ll grow into something more available to everyone!

### 3/5 — Great idea, lacking execution so far

*2026-02-02*

I echo the other review, though maybe it has gotten better by now with a larger dataset to work from. When I used it in Oct 25, it was not able to accurately distinguish different parts of my body and joint angles even if I set up everything perfectly with good lighting and distinguishable clothing. I thought I was going crazy trying everything to change my stroke until I realized it was not reading my stroke right in the first place. Additionally, although Mark is a good researcher and can identify problems with technique, he isn’t an expert coach in fixing those problems, so the tips for improvement are quite limited.

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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 2026-08-29.*