# Bitcoin Sim vs Kaft Pay

The clearest difference is price: Kaft Pay at Free against Bitcoin Sim's $0.99. Kaft Pay also leads on in-app purchases (none vs 2) and iOS requirement (15.1 vs 18.0). On update cadence, ads and device support there is nothing between them.

Kaft Pay is free to download; Bitcoin Sim costs $0.99 up front. Bitcoin Sim sells 2 one-off in-app purchases. Kaft Pay asks for nothing beyond the download.

Bitcoin Sim ships an update every 5 days, Kaft Pay weekly. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Bitcoin Sim | Kaft Pay |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Weekly |
| Size | 8 MB | 70 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Conor Nolan](https://appshunter.io/developer/1798627652) | [KAFTPAY, MCHJ](https://appshunter.io/developer/6798976473) |

## What reviewers say

### Bitcoin Sim

[App page](https://appshunter.io/ios/app/bitcoin-sim/id6743064564)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 25 Simulation Credits | $0.99 | one-time |
| Pro – Unlimited • 11× Faster | $7.99 | one-time |


### Kaft Pay

[App page](https://appshunter.io/ios/app/kaft-pay/id6798976471)

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

**In-app purchases:** none


## Frequently asked questions

### Is Bitcoin Sim free?

Bitcoin Sim costs $0.99, and also offers in-app purchases.

### Is Kaft Pay free?

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

### Do Bitcoin Sim or Kaft Pay have ads?

Neither Bitcoin Sim nor Kaft Pay shows ads.

### Which is updated more often, Bitcoin Sim or Kaft Pay?

Bitcoin Sim ships an update every 5 days, and Kaft Pay weekly. Most recently, Bitcoin Sim was updated on October 28, 2026 and Kaft Pay on October 24, 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.*