# SiamGPT vs iBuzzPen

SiamGPT and iBuzzPen are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 28, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | SiamGPT | iBuzzPen |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Size | 110 MB | 40 MB |
| Requires iOS | 15.0 | 15 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SIAM AI CORPORATION COMPANY LIMITED](https://appshunter.io/developer/1777228804) | [香港不止書寫科技有限公司](https://appshunter.io/developer/1890134045) |

## What reviewers say

### SiamGPT

[App page](https://appshunter.io/ios/app/siamgpt/id6738045774)

**Features:** macOS Compatibility

**In-app purchases:** none


### iBuzzPen

[App page](https://appshunter.io/ios/app/ibuzzpen/id6761523419)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SiamGPT free?

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

### Is iBuzzPen free?

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

### Do SiamGPT or iBuzzPen have ads?

Neither SiamGPT nor iBuzzPen shows ads.

### Which is updated more often, SiamGPT or iBuzzPen?

SiamGPT ships an update fortnightly, and iBuzzPen fortnightly. Most recently, SiamGPT was updated on October 28, 2026 and iBuzzPen on October 8, 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.*