# Oki Doki vs 9Solver AI

Oki Doki and 9Solver AI are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Oki Doki sells 2 in-app purchases, starting at $3.99 per month and 9Solver AI sells 7 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Oki Doki ships an update weekly, 9Solver AI every 10 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Oki Doki | 9Solver AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 10 days |
| Size | 51 MB | 110 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Roman Bialek](https://appshunter.io/developer/1559308341) | [Le Hoang Thi Ngoc](https://appshunter.io/developer/1458862040) |

## What reviewers say

### Oki Doki

[App page](https://appshunter.io/ios/app/oki-doki-flashcards/id6755127565)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Oki Doki Premium - Monthly | $3.99 | per month |
| Oki Doki Premium - Yearly | $24.99 | per year |


### 9Solver AI

[App page](https://appshunter.io/ios/app/9solver-ai-homework-helper/id6758931755)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $5.99 | per 7 days |
| Weekly | $5.99 | per 7 days |
| Monthly | $29.99 | per month |
| Monthly | $29.99 | per month |
| Yearly | $69.99 | per year |
| Yearly | $99.99 | per year |
| Premium | $99.99 | per year |


## Frequently asked questions

### Is Oki Doki free?

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

### Is 9Solver AI free?

9Solver AI is free to download, with in-app purchases available.

### Do Oki Doki or 9Solver AI have ads?

Neither Oki Doki nor 9Solver AI shows ads.

### Which is updated more often, Oki Doki or 9Solver AI?

Oki Doki ships an update weekly, and 9Solver AI every 10 days. Most recently, Oki Doki was updated on October 24, 2026 and 9Solver AI on October 24, 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.*