What users hate. Clustered.

1- and 2-star reviews grouped into themes with verbatim examples. Each cluster is a wedge a competitor could exploit.

78 reviews·8 themes

False or misleading trial and billing practices
Users report being charged immediately without a real trial, misled by hidden terms, and unable to get refunds despite clear expectations of a free trial.
12
reviews
- “The app advertises a 14-day free trial, but I was charged immediately with no trial period. Very misleading and unfair billing practice.”
- “Charged me without giving my free trial — I decided to use the Mimo app and learn code. The offered a 14-day trial which I availed but it didn’t work and charged my payment right away for the annual fee of $100+.”
- “Forced renewal — On the app it says to go to apple to get the reimbursement, it doesn’t exist on my apple payements. tried sending emails no one answers. Force renewal on my credit card.”
Heart system is overly punitive and excessively slow to refill
Free users are severely punished for mistakes with long wait times (3+ hours) to regain hearts, disrupting learning flow and frustrating users.
15
reviews
- “Pay to win you can use it but if you use all hearts you have to wait 3 Hours per heart”
- “3 hours to wait for one heart is freaking ridiculous. It kills the fun.”
- “I was about to go up a league, all I needed was 100 more points but nope the hearts went down from 5 to 0... This marketing strategy is disgusting.”
App crashes, freezes, and fails to load after updates
Multiple reports of app crashing, freezing, showing 'Ooops something went wrong' errors, or failing to launch after recent updates.
14
reviews
- “App crashed — The app crash and lost all progress.”
- “No longer works after update — The most recent update leaves the app consistently in “Ooops something went wrong” on every tab.”
- “It’s keeps freezing on me when I try to type things. Then I lose my work”
Poor or broken AI and interactive features
AI functionality breaks on screen rotation or button clicks, helper bots crash the app, and autocomplete interferes with learning.
6
reviews
- “AI is always broken — Bro why is the AI so bad like in the build section if ur screen rotates or if u click a button it breaks ur ai and it takes tokens for making NOTHING.”
- “In the practice section those helper bots when ur typing always crash my app”
- “annoying feature — this app works great and i'm willing to change my review, but the thing that's annoying the hell out of me is the autocomplete.”
Content limitations and lack of language options
Users report missing languages (like Java), thin content, inability to skip beginner levels, and lack of localization (e.g., French, Spanish).
8
reviews
- “I was really happy with the program and bought the full access to learn Java. Then a new update came out, and I can only learn SQL, web development, and python, not what I signed up for.”
- “Not tailored — I have coding experience and thought the app would start me somewhere less basic or let me skip sections, but I can’t so none of the content is relevant to me”
- “Language — It’s a good app, but the only thing is the language. My cosine is French so she can’t use the app. Please, give options for the language like : French, Chinese, Spanish...”
Overpriced subscription and poor value for money
Users feel premium pricing is unjustified given limited content, excessive restrictions, and better alternatives available for free.
10
reviews
- “So.. I paid for premium, and I’m very upset — I paid for this subscription expecting to unlock the full experience. I’m only in level two, then they tell me I need a computer.”
- “Thin content, then expensive — The free content is very thin and the premium version is expensive compared to the alternatives.”
- “Overpriced — It is great help me learn but after 2 courses you have to pay a lot”
Poor UI/UX changes and technical regressions
Recent UI updates are described as unintuitive, broken, and worse than previous versions, especially affecting mobile usability.
7
reviews
- “The recent UI update is absolutely terrible — I really liked this app before, but the recent “update” they did with the UI is so incredibly unintuitive and bad that’s it’s a shame.”
- “Terrible UI — The code box is really bad on mobile. Please fix as the code keeps getting messed up when I tap on it.”
- “Lastest update broke it: — I enter the correct answer and it fails me; if you require proof can I please get the email for the apps dev/support team.”
Lack of customer support and transparency
Users report no response to refund requests, unhelpful support replies (e.g., 'try reinstalling'), and no accessible communication channels.
6
reviews
- “Paid the app and its not working, it doesnt have any customer suport or even an chst where i can talk woth someone! What a scan…”
- “I have repeated the error for 3 days until I finally gave up after sending a support Email to which Mimo replied with “try reinstalling the ap””
- “Refund — Did not get my refund back”

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