# Solve vs DITERS

The clearest difference is in-app purchases: Solve at none against DITERS's 1. Solve also leads on update cadence (every 3 days vs weekly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. DITERS sells 1 in-app purchase, starting at $2.99 per month. Solve asks for nothing beyond the download.

Solve ships an update every 3 days, DITERS weekly. The most recent releases landed on September 27, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Solve | DITERS |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 days** | Weekly |
| Monetization | Ad-supported | — |
| Size | 156 MB | 90 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Testbank Inc.](https://appshunter.io/developer/1489897656) | [SANGHWAN PARK](https://appshunter.io/developer/1844754793) |

## What reviewers say

### Solve

[App page](https://appshunter.io/ios/app/solve-study-notes/id1629592780)

This app offers free past exam papers for various subjects and allows users to access popular workbooks digitally. It features automatic grading and integrated note-taking for efficient studying, eliminating the need to flip between books and answer keys.

**Highlights:** Free past exam papers, Digital workbooks, Automatic grading, Integrated note-taking, Problem and solution on one screen, iPad and Apple Pencil support

**Features:** macOS Compatibility

**In-app purchases:** none


### DITERS

[App page](https://appshunter.io/ios/app/diters/id6753735096)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DITERS 프리미엄 - 월 ₩3,900 | $2.99 | per month |


## Frequently asked questions

### Is Solve free?

Solve is free to download, with no in-app purchases.

### Is DITERS free?

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

### Do Solve or DITERS have ads?

Both Solve and DITERS show ads.

### Which is updated more often, Solve or DITERS?

Solve ships an update every 3 days, and DITERS weekly. Most recently, Solve was updated on September 27, 2026 and DITERS on September 9, 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.*