# 9Solver AI vs Revisio

9Solver AI and Revisio 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. 9Solver AI sells 7 in-app purchases, starting at $5.99 per 7 days and Revisio sells 2 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

9Solver AI ships an update every 10 days, Revisio every 3 weeks. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | 9Solver AI | Revisio |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Size | 110 MB | 73 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Le Hoang Thi Ngoc](https://appshunter.io/developer/1458862040) | [Gaith LLC](https://appshunter.io/developer/1883402633) |

## What reviewers say

### 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 |


### Revisio

[App page](https://appshunter.io/ios/app/revisio-flashcards-and-notes/id6760239621)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Recap Premium Weekly | $6.99 | per 7 days |
| Recap Premium Yearly | $59.99 | per year |


## Frequently asked questions

### Is 9Solver AI free?

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

### Is Revisio free?

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

### Do 9Solver AI or Revisio have ads?

Neither 9Solver AI nor Revisio shows ads.

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

9Solver AI ships an update every 10 days, and Revisio every 3 weeks. Most recently, 9Solver AI was updated on October 24, 2026 and Revisio on October 19, 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.*