# AInstein vs MindKoi

The clearest difference is update cadence: MindKoi at every 10 days against AInstein's monthly. AInstein's advantage is iOS requirement (13.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. AInstein sells 3 in-app purchases, starting at $7.99 per 7 days and MindKoi sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

AInstein ships an update monthly, MindKoi every 10 days. Both last shipped on October 28, 2026.

## The numbers

| Metric | AInstein | MindKoi |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 10 days** |
| Size | 70 MB | 18 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | +4 | 4+ |
| Developer | [Pankaj Kumar](https://appshunter.io/developer/1800497206) | [Pavel Kazlou](https://appshunter.io/developer/1462519810) |

## What reviewers say

### AInstein

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

**Features:** macOS Compatibility, Vision Pro support

**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 |


### MindKoi

[App page](https://appshunter.io/ios/app/mindkoi-study-smarter-and-learn/id6751173393)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plus | $9.99 | per month |
| Annual Plus | $44.99 | per year |


## Frequently asked questions

### Is AInstein free?

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

### Is MindKoi free?

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

### Do AInstein or MindKoi have ads?

Neither AInstein nor MindKoi shows ads.

### Which is updated more often, AInstein or MindKoi?

AInstein ships an update monthly, and MindKoi every 10 days. Most recently, AInstein was updated on October 28, 2026 and MindKoi on October 28, 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.*