# Karbon Networks vs Simby

The clearest difference is in-app purchases: Karbon Networks at none against Simby's 2. Karbon Networks also leads on iOS requirement (13.4 vs 15.1). Simby's advantage is update cadence (every 3 weeks vs every 6 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Simby sells 2 in-app purchases, starting at $4.99 per month. Karbon Networks asks for nothing beyond the download.

Karbon Networks ships an update every 6 weeks, Simby every 3 weeks. The most recent releases landed on October 7, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Karbon Networks | Simby |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (2 ratings)](https://appshunter.io/ios/app/karbon-networks/id1572623324/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 49 MB | 68 MB |
| Requires iOS | **13.4** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Khaled Riyal](https://appshunter.io/developer/549998046) | [VESELA NIKOLAEVA MARINOVA](https://appshunter.io/developer/6786623623) |

## What reviewers say

### Karbon Networks

[App page](https://appshunter.io/ios/app/karbon-networks/id1572623324)

This app aims to be at the forefront of digital change in business, focusing on improving efficiency and innovation through technology. It is embarking on a digital transformation journey for online fitness subscriptions.

**Highlights:** Digital transformation, Online fitness subscriptions, Business innovation, Efficiency improvement, Technology adoption

**Features:** macOS Compatibility

**In-app purchases:** none


### Simby

[App page](https://appshunter.io/ios/app/simby/id6786623621)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Simby Premium Monthly | $4.99 | per month |
| Simby Premium Annual | $39.99 | per year |


## Frequently asked questions

### Is Karbon Networks free?

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

### Is Simby free?

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

### Do Karbon Networks or Simby have ads?

Neither Karbon Networks nor Simby shows ads.

### Which is updated more often, Karbon Networks or Simby?

Karbon Networks ships an update every 6 weeks, and Simby every 3 weeks. Most recently, Karbon Networks was updated on October 7, 2026 and Simby on October 10, 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.*