# Clinical Lab Science Review — user reviews > 18 indexed App Store user reviews of Clinical Lab Science Review by Tot Dojo LLC. - Source: https://appshunter.io/ios/app/clinical-lab-science-review/id1230284230/reviews - App overview in markdown: https://appshunter.io/ios/app/clinical-lab-science-review/id1230284230.md ## Most critical reviews (10 lowest-rated) ### 1/5 — Scam , don't upgrade *2024-06-25* I upgraded the app for $39.99 , a week ago and it has not upgraded yet!!. The upgrade part Is a scam . ### 1/5 — Doesn’t open *2024-01-22* Purchased upgrade but app opens up to a white screen. Won’t allow me to proceed after purchase. ### 1/5 — Didn’t help *2023-04-27* This is app not helping so don’t buy it!! ### 1/5 — Great concept but very repetitive, just basic questions, and way too expensive *2022-11-02* I love the idea but I want to be doing more complex level 2 and 3 questions if I’m going to pay this much money. Love the idea but right now would not recommend buying this for students. ### 1/5 — Crashes *2022-10-03* iPad crashes every time I try to increase the number of questions greater than 10. ### 1/5 — No help *2022-07-13, version 1.4.0* The question from this apps didn’t help don’t get it it’s waste of money. ### 1/5 — Crashes *2021-08-13* iPad crashes every time I try to increase the number of questions greater than 10. Works fine on my iPhone but the tiny iPhone screen is very inconvenient. ### 1/5 — Constantly crashes *2018-05-05* This app constantly crashes. I cannot do 100 questions because it crashes in the middle of me practicing. Not happy. **Developer response:** Sorry to hear you're having issues with the app. We guarantee satisfaction for all users of the app or you'll be issued a refund. Can you please let us know the device and iOS version you are using? ### 2/5 — Not worth the money *2022-06-12* This app is great for doing questions on the go. Some of the explanations contain memory devices which I also found helpful. That being said, the questions were really repetitive and way too basic compared to what I ended up facing on the exam. This app would be great if it was $10. $40 is way too much. ### 2/5 — Lacks robust *2018-09-01* One would think for a $39 app, it would be more robust in its array of questions. It is horrible. You should separate RBC from WBC, aerobes from anaerobes, etc & where are the cell slides??? How about a refund? **Developer response:** Hi, thank you for the feedback. Sorry to hear you are disappointed with the app. We guarantee 100% satisfaction for all of our users or a refund will be issued. We also recommend to use our free CLS review website, www.clsresource.com to help with your studying. ## Most praised reviews (8 highest-rated) ### 5/5 — A great study tool! *2026-03-03* This app helps and prepares you for any lab science exam! I love the ease of navigating the app and the aesthetic! Info and explanations are so helpful! Thank you to the CLS team! ### 5/5 — Awesome App *2021-03-07* No need for reviewers and recordings to study. I recommend to have videos available. I watch youtube for processes to refresh my mind on daily lab routine. ### 5/5 — Update! Great app *2020-01-27* This app is very helpful in studying for the ASCP ### 5/5 — This app is great *2019-12-28* I don’t want to give it 4 star because the only problem is algorithm. Can you please fix that. When I set to 10 questions which is my favorite thing, I think I keep seeing the same question when I done a repeat. Please more variation in set of 10 or 20 questions. The variation works great when I set to 50 questions expect I don’t want to do that many. ### 5/5 — very easy to use & helpful *2019-04-06* It’s easy to use everywhere and it’s very helpful ... ### 5/5 — Very Helpful *2018-10-15* Wonderful app! My friend recommended it to me last month and it has been great. The explanations helped me understand tough and key concepts. ### 4/5 — So far not a bad tool to have on the go! *2023-01-01* Like the title says, I’m not carrying a review book around with me everywhere I go while I prep for my boards so this is an excellent way to review Note: a few small issues on my end: The subscript 2 for BB (ie R2r1) doesn’t show clearly, looks like a zero And there is a question regarding how long plasma has to be frozen, the wording needs to be more specific (PF24 vs FFP) Otherwise certainly a great tool to use ### 4/5 — Awesome! *2020-08-20* I just recently downloaded this app and it’s definitely helping me study a lot for the ASCP! The only problem I do have is that I am getting a lot of the same questions whenever I do less than 50 questions at random. I’m also starting to notice that it sometimes comes up in the same order. Overall, I love the app and would recommend it as a good study tool to quiz yourself on the go! --- *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 2026-08-21.*