Missing Numbers Minds vs AInstein
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Missing Numbers Minds
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Improve your mind skill finding out the missing number. Choose the up to 10 levels: Easy, Medium, Hard , ( linear, recurrence or both ) or Random. Push START- Time Up or Time Down Guess the missing numbers to get points. Higher Level , more points. Ideal for kinds and people who need to exercise their brain. Very easy to use. Donations for App maintenance welcome. Thanks.
AInstein
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AInstein – The best app to take study notes. Turn PDFs, audio recordings, images or youtube video to structured notes. AInstein will help you generate flashcards and quizzes from your notes to help you study smarter and learn faster. Whenever you're stuck somewhere, chat with AInstein assistant to help you gather more information about your notes. Smart features: - PDF notes - Upload a PDF file and AIsntein will turn it into easily understandable lessons. - AI Audio transcription - Record your voice or a podcast or some meeting or lecture and let AInstein summarize it for you. - Summarize photos - Take a picture of the problem you're trying to solve and AInstein will provide a solution in seconds. - AI flashcards and quizzes - Generate flashcards and quizzes from your notes to help you learn smarter. - Translate your notes to any language - Korean, Japanese, Chinese, Russian, Italian, French, German or Spanish. - Keep track of your learning progress and study streaks over time. - Timely reminders to keep you motivated. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: AInstein at monthly against Missing Numbers Minds's every 5 months. AInstein also leads on iOS requirement (13.0 vs 26.1). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Missing Numbers Minds sells 2 one-off in-app purchases and AInstein sells 3 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Missing Numbers Minds ships an update every 5 months, AInstein monthly. The most recent releases landed on September 27, 2026 and October 2, 2026 respectively.
| Parameter | Missing Numbers Minds | AInstein |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 months | Monthly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.1 | 13.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 70 MB |
| Age rating | 4+ | 4+ |
| Developer | Juan Fullana | Pankaj Kumar |
In-app purchases
Missing Numbers Minds
- Donation for maintenance.$0.99
- Extra for develop and maintenance$0.99
AInstein
- Weekly Unlimited$7.997 Days
- Monthly Unlimited$14.991 Month
- Yearly Unlimited$89.991 Year
Questions
Is Missing Numbers Minds free?
Is AInstein free?
Do Missing Numbers Minds or AInstein have ads?
Which is updated more often, Missing Numbers Minds or AInstein?
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