# Drag Calc vs Smart Math Drills

The clearest difference is in-app purchases: Smart Math Drills at none against Drag Calc's 1. Smart Math Drills also leads on update cadence (every 2 days vs every 2 months) and iOS requirement (11.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. Drag Calc sells 1 one-off in-app purchase. Smart Math Drills asks for nothing beyond the download.

Drag Calc ships an update every 2 months, Smart Math Drills every 2 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | Drag Calc | Smart Math Drills |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Size | 8 MB | 70 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MITSURU OMURA](https://appshunter.io/developer/1476823856) | [Satoru Morita](https://appshunter.io/developer/1623323756) |

## What reviewers say

### Drag Calc

[App page](https://appshunter.io/ios/app/drag-calc/id1513398646)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Heart Icon | $2.99 | one-time |


### Smart Math Drills

[App page](https://appshunter.io/ios/app/smart-math-drills/id6478051833)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Drag Calc free?

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

### Is Smart Math Drills free?

Smart Math Drills is free to download, with no in-app purchases.

### Do Drag Calc or Smart Math Drills have ads?

Neither Drag Calc nor Smart Math Drills shows ads.

### Which is updated more often, Drag Calc or Smart Math Drills?

Drag Calc ships an update every 2 months, and Smart Math Drills every 2 days. Most recently, Drag Calc was updated on October 25, 2026 and Smart Math Drills on October 25, 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.*