# Missing Numbers Minds vs AInstein

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.

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.

## The numbers

| Metric | Missing Numbers Minds | AInstein |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Monthly** |
| Size | 4 MB | 70 MB |
| Requires iOS | 26.1 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Juan Fullana](https://appshunter.io/developer/692107580) | [Pankaj Kumar](https://appshunter.io/developer/1800497206) |

## What reviewers say

### Missing Numbers Minds

[App page](https://appshunter.io/ios/app/missing-numbers-minds/id980949764)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Donation for maintenance. | $0.99 | one-time |
| Extra for develop and maintenance | $0.99 | one-time |


### AInstein

[App page](https://appshunter.io/ios/app/ainstein-notes-and-transcribe/id6746379171)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Unlimited | $7.99 | per 7 days |
| Monthly Unlimited | $14.99 | per month |
| Yearly Unlimited | $89.99 | per year |


## Frequently asked questions

### Is Missing Numbers Minds free?

Missing Numbers Minds is free to download, with in-app purchases available.

### Is AInstein free?

AInstein is free to download, with in-app purchases available.

### Do Missing Numbers Minds or AInstein have ads?

Neither Missing Numbers Minds nor AInstein shows ads.

### Which is updated more often, Missing Numbers Minds or AInstein?

Missing Numbers Minds ships an update every 5 months, and AInstein monthly. Most recently, Missing Numbers Minds was updated on September 27, 2026 and AInstein on October 2, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*