# ICHIapp vs FieldBus Toolkit

The clearest difference is in-app purchases: ICHIapp at none against FieldBus Toolkit's 1. ICHIapp also leads on ads (none vs shown). FieldBus Toolkit's advantage is update cadence (every 2 months vs every 9 months) and iOS requirement (13.0 vs 15.0). On price and device support there is nothing between them.

Both are free to download. FieldBus Toolkit sells 1 one-off in-app purchase. ICHIapp asks for nothing beyond the download.

ICHIapp ships an update every 9 months, FieldBus Toolkit every 2 months. The most recent releases landed on October 6, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | ICHIapp | FieldBus Toolkit |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Every 2 months** |
| Size | 29 MB | 29 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ELTE SMART SP Z O O](https://appshunter.io/developer/1611540656) | [DONGSOO LEE](https://appshunter.io/developer/1868670088) |

## What reviewers say

### ICHIapp

[App page](https://appshunter.io/ios/app/ichiapp/id1611540654)

**Features:** macOS Compatibility

**In-app purchases:** none


### FieldBus Toolkit

[App page](https://appshunter.io/ios/app/fieldbus-toolkit/id6758210279)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is ICHIapp free?

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

### Is FieldBus Toolkit free?

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

### Do ICHIapp or FieldBus Toolkit have ads?

FieldBus Toolkit shows ads; ICHIapp does not.

### Which is updated more often, ICHIapp or FieldBus Toolkit?

ICHIapp ships an update every 9 months, and FieldBus Toolkit every 2 months. Most recently, ICHIapp was updated on October 6, 2026 and FieldBus Toolkit on October 9, 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.*