# Calc Ninja vs SumDash

The clearest difference is in-app purchases: Calc Ninja at none against SumDash's 1. SumDash's advantage is update cadence (every 2 days vs monthly) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. SumDash sells 1 one-off in-app purchase. Calc Ninja asks for nothing beyond the download.

Calc Ninja ships an update monthly, SumDash every 2 days. The most recent releases landed on October 31, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Calc Ninja | SumDash |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Every 2 days** |
| Size | 118 MB | 52 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [kotaro yamada](https://appshunter.io/developer/1193903506) | [YT Lab](https://appshunter.io/developer/6774625279) |

## What reviewers say

### Calc Ninja

[App page](https://appshunter.io/ios/app/calc-ninja-mental-math-games/id6784948949)

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

**In-app purchases:** none


### SumDash

[App page](https://appshunter.io/ios/app/sumdash-math-speed-game/id6785198584)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.49 | one-time |


## Frequently asked questions

### Is Calc Ninja free?

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

### Is SumDash free?

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

### Do Calc Ninja or SumDash have ads?

Both Calc Ninja and SumDash show ads.

### Which is updated more often, Calc Ninja or SumDash?

Calc Ninja ships an update monthly, and SumDash every 2 days. Most recently, Calc Ninja was updated on October 31, 2026 and SumDash on November 2, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*