# FibDefense vs Number Network

The clearest difference is in-app purchases: Number Network at none against FibDefense's 1. Number Network also leads on ads (none vs shown). FibDefense's advantage is update cadence (every 9 days vs every 2 months) and iOS requirement (15.1 vs 17.0). On price and device support there is nothing between them.

Both are free to download. FibDefense sells 1 one-off in-app purchase. Number Network asks for nothing beyond the download.

FibDefense ships an update every 9 days, Number Network every 2 months. The most recent releases landed on October 16, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | FibDefense | Number Network |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (11 ratings)](https://appshunter.io/ios/app/fibdefense-math-tower-defense/id6777353719/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 9 days** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 56 MB | 20 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Tigerclaw Technologies, LLC](https://appshunter.io/developer/1862710113) | [ehsan azish](https://appshunter.io/developer/1622575303) |

## What reviewers say

### FibDefense

[App page](https://appshunter.io/ios/app/fibdefense-math-tower-defense/id6777353719)

Engage in a unique tower defense experience where every tower's damage is based on Fibonacci numbers. Solve mathematical puzzles to defeat monsters with precise HP values, ensuring no overkill. Explore diverse worlds and challenge yourself with multiple difficulty levels.

**Highlights:** Fibonacci damage system, No overkill mechanic, Six distinct worlds, Five difficulty levels, Zeckendorf mode challenge, Boss encounters, Single purchase unlocks all content

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Game Unlock | $2.99 | one-time |


### Number Network

[App page](https://appshunter.io/ios/app/number-network/id6800620888)

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

**In-app purchases:** none


## Frequently asked questions

### Is FibDefense free?

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

### Is Number Network free?

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

### Do FibDefense or Number Network have ads?

FibDefense shows ads; Number Network does not.

### Which is updated more often, FibDefense or Number Network?

FibDefense ships an update every 9 days, and Number Network every 2 months. Most recently, FibDefense was updated on October 16, 2026 and Number Network on October 17, 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.*