# Filament.uno vs Whack

The clearest difference is rating: Whack at 5.0 against Filament.uno's 3.7. Whack also leads on in-app purchases (none vs 1) and ads (none vs shown). On price, ratings volume and device support there is nothing between them.

Both are free to download. Filament.uno sells 1 one-off in-app purchase. Whack asks for nothing beyond the download.

Whack holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews point the same way: 67% of Filament.uno's written reviews are positive against 100% of Whack's.

Filament.uno ships an update every 3 months, Whack every 3 days. The most recent releases landed on October 24, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Filament.uno | Whack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/filamentuno/id1543388155/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/whack-a-num/id6720755225/reviews)** |
| Number of ratings | **3** | 2 |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 13 MB | 0 MB |
| Requires iOS | 18.6 | **16.6** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Paul Sohier](https://appshunter.io/developer/921377230) | [Danielle Lewis](https://appshunter.io/developer/1703420073) |

## What reviewers say

### Filament.uno

[App page](https://appshunter.io/ios/app/filamentuno/id1543388155)

Easily manage your 3D printing filament stock. Track what you have, add new spools, and maintain your inventory with simple tools.

**Highlights:** Add filament spools, Manage inventory, Maintain filament stock, Simple functionality

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Filament.uno PRO | $2.99 | one-time |


### Whack

[App page](https://appshunter.io/ios/app/whack-a-num/id6720755225)

This game makes math practice engaging and challenging. As you tap numbers, the game speeds up, turning your math drills into an alert and focused experience. It's designed for those who enjoy a high-difficulty approach to learning.

**Highlights:** Engaging math practice, Increasing difficulty, Focus enhancement, Game-like interface, Quick reaction challenges

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Filament.uno free?

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

### Is Whack free?

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

### Which has better reviews, Filament.uno or Whack?

Whack is rated higher. Filament.uno averages 3.7 out of 5 from 3 ratings, while Whack averages 5.0 from 2 ratings.

### Do Filament.uno or Whack have ads?

Filament.uno shows ads; Whack does not.

### Which is updated more often, Filament.uno or Whack?

Filament.uno ships an update every 3 months, and Whack every 3 days. Most recently, Filament.uno was updated on October 24, 2026 and Whack on October 20, 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.*