# BugSim vs TheDLA

The clearest difference is update cadence: TheDLA at every 3 months against BugSim's every 33 months. TheDLA also leads on rating (4.3 vs 4.0) and ratings volume (3 vs 1). BugSim's advantage is iOS requirement (12.0 vs 16.6). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

TheDLA holds the better App Store score, 4.3 against 4.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

BugSim ships an update every 33 months, TheDLA every 3 months. The most recent releases landed on September 9, 2026 and June 3, 2026 respectively.

## The numbers

| Metric | BugSim | TheDLA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/bugsim/id376219983/reviews) | **[4.3 (3 ratings)](https://appshunter.io/ios/app/thedla/id506499656/reviews)** |
| Number of ratings | 1 | **3** |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 33 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 1 MB | 10 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Mike Wesemann](https://appshunter.io/developer/285807162) | [Daishin Ueyama](https://appshunter.io/developer/495395197) |

## What reviewers say

### BugSim

[App page](https://appshunter.io/ios/app/bugsim/id376219983)

Explore Darwinian evolution through a simulation game where virtual bugs learn to survive and hunt bacteria. This educational app is based on a concept from a 1989 Scientific American article.

**Highlights:** Darwinian evolution simulation, Survival of the fittest mechanics, Bugs hunt bacteria, Educational gameplay, Based on Scientific American concept

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

**In-app purchases:** none


### TheDLA

[App page](https://appshunter.io/ios/app/thedla/id506499656)

Explore pattern formation in nature with this app. It visualizes Diffusion Limited Aggregation, allowing you to create unique, complex dendritic patterns. Experiment with different interactions to generate artistic and scientific designs.

**Highlights:** Visualize Diffusion Limited Aggregation, Create complex dendritic patterns, Interactive pattern generation, Color selection for branches, Export images to photo library, Twitter, Facebook, GIF animation export, Face detection for particle placement

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BugSim free?

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

### Is TheDLA free?

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

### Which has better reviews, BugSim or TheDLA?

TheDLA is rated higher. BugSim averages 4.0 out of 5 from 1 ratings, while TheDLA averages 4.3 from 3 ratings.

### Do BugSim or TheDLA have ads?

Neither BugSim nor TheDLA shows ads.

### Which is updated more often, BugSim or TheDLA?

BugSim ships an update every 33 months, and TheDLA every 3 months. Most recently, BugSim was updated on September 9, 2026 and TheDLA on June 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.*