# Grader.ai vs Prepclass

Grader.ai and Prepclass 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. Grader.ai sells 2 in-app purchases, starting at $14.99 per month and Prepclass sells 2 in-app purchases, starting at $14.99 per month. Whichever you choose, the download price is not the number that matters.

Grader.ai ships an update every 4 days, Prepclass every 3 days. The most recent releases landed on October 10, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Grader.ai | Prepclass |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | **Every 3 days** |
| Size | 155 MB | 61 MB |
| Requires iOS | 16.6 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Daur Talgatov](https://appshunter.io/developer/1836276247) | [Okiro Education, Inc.](https://appshunter.io/developer/1883825560) |

## What reviewers say

### Grader.ai

[App page](https://appshunter.io/ios/app/graderai/id6751673412)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Grader Plus Monthly | $14.99 | per month |
| Grader Plus Yearly | $79.99 | per year |


### Prepclass

[App page](https://appshunter.io/ios/app/prepclass-toefl-prep-2026/id6760318069)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Prepclass Pro Monthly | $14.99 | per month |
| Prepclass Pro Annual | $59.99 | per year |


## Frequently asked questions

### Is Grader.ai free?

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

### Is Prepclass free?

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

### Do Grader.ai or Prepclass have ads?

Neither Grader.ai nor Prepclass shows ads.

### Which is updated more often, Grader.ai or Prepclass?

Grader.ai ships an update every 4 days, and Prepclass every 3 days. Most recently, Grader.ai was updated on October 10, 2026 and Prepclass on October 6, 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.*