# FastMath vs Naughty Duck !

The clearest difference is price: FastMath at Free against Naughty Duck !'s $0.99. Naughty Duck !'s advantage is in-app purchases (none vs 2) and ads (none vs shown). On device support there is nothing between them.

FastMath is free to download; Naughty Duck ! costs $0.99 up front. FastMath sells 2 one-off in-app purchases. Naughty Duck ! asks for nothing beyond the download.

FastMath ships an update every 111 months, Naughty Duck ! every 3 months. The most recent releases landed on October 8, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | FastMath | Naughty Duck ! |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | — | **[3.2 (53 ratings)](https://appshunter.io/ios/app/naughty-duck/id1585085870/reviews)** |
| Number of ratings | — | **53** |
| Positive reviews | — | 48.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 111 months | **Every 3 months** |
| Monetization | — | Free |
| Best chart rank | — | **#75** |
| Size | 5 MB | 6 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Upul Adikari](https://appshunter.io/developer/1257503359) | [abedalkareem omreyh](https://appshunter.io/developer/928910207) |

## What reviewers say

### FastMath

[App page](https://appshunter.io/ios/app/fastmath-improve-math-skill/id1265615879)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |
| FastMath Premium | $1.99 | one-time |


### Naughty Duck !

[App page](https://appshunter.io/ios/app/naughty-duck/id1585085870)

**Currently charting:** #75 Top Paid · Adventure (US App Store)

Embark on an adventure with a mischievous duck who has angered a farmer. Help this fowl escape by outsmarting the farmer and reaching safety. Enjoy a lighthearted game designed for passing the time.

**Highlights:** Escape the farmer, Collect stolen crops, Pass the time, Enjoyable gameplay, Lighthearted adventure

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is FastMath free?

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

### Is Naughty Duck ! free?

Naughty Duck ! costs $0.99, with no in-app purchases.

### Do FastMath or Naughty Duck ! have ads?

FastMath shows ads; Naughty Duck ! does not.

### Which is updated more often, FastMath or Naughty Duck !?

FastMath ships an update every 111 months, and Naughty Duck ! every 3 months. Most recently, FastMath was updated on October 8, 2026 and Naughty Duck ! on November 3, 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.*