# Solve vs Recall Drill

The clearest difference is in-app purchases: Solve at none against Recall Drill's 1. Recall Drill's advantage is ads (none vs shown) and iOS requirement (15.0 vs 17.6). On price, update cadence and device support there is nothing between them.

Both are free to download. Recall Drill sells 1 one-off in-app purchase. Solve asks for nothing beyond the download.

Solve ships an update every 3 days, Recall Drill weekly. The most recent releases landed on October 14, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Solve | Recall Drill |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 86.4% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Weekly |
| Monetization | Ad-supported | — |
| Size | 208 MB | 20 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Testbank Inc.](https://appshunter.io/developer/1489897656) | [알파루프](https://appshunter.io/developer/1895908497) |

## 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


### Recall Drill

[App page](https://appshunter.io/ios/app/recall-drill/id6797267823)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Decks | $3.99 | one-time |


## Frequently asked questions

### Is Solve free?

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

### Is Recall Drill free?

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

### Do Solve or Recall Drill have ads?

Solve shows ads; Recall Drill does not.

### Which is updated more often, Solve or Recall Drill?

Solve ships an update every 3 days, and Recall Drill weekly. Most recently, Solve was updated on October 14, 2026 and Recall Drill on September 30, 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.*