# Binary Calculator SDG vs Modbus TCP FieldKit

The clearest difference is price: Binary Calculator SDG at Free against Modbus TCP FieldKit's $5.99. Binary Calculator SDG also leads on iOS requirement (11.0 vs 18.0). Modbus TCP FieldKit's advantage is ads (none vs shown) and update cadence (weekly vs every 12 months). On in-app purchases and device support there is nothing between them.

Binary Calculator SDG is free to download; Modbus TCP FieldKit costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Binary Calculator SDG ships an update every 12 months, Modbus TCP FieldKit weekly. The most recent releases landed on November 8, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | Binary Calculator SDG | Modbus TCP FieldKit |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 12 months | **Weekly** |
| Size | 12 MB | 13 MB |
| Requires iOS | **11.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SDG CODE DOO NIS](https://appshunter.io/developer/1343251532) | [Vladimir Chemeris](https://appshunter.io/developer/1854526571) |

## What reviewers say

### Binary Calculator SDG

[App page](https://appshunter.io/ios/app/binary-calculator-sdg/id6741471372)

**Features:** macOS Compatibility

**In-app purchases:** none


### Modbus TCP FieldKit

[App page](https://appshunter.io/ios/app/modbus-tcp-fieldkit/id6768897913)

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

**In-app purchases:** none


## Frequently asked questions

### Is Binary Calculator SDG free?

Binary Calculator SDG is free to download, with no in-app purchases.

### Is Modbus TCP FieldKit free?

Modbus TCP FieldKit costs $5.99, with no in-app purchases.

### Do Binary Calculator SDG or Modbus TCP FieldKit have ads?

Binary Calculator SDG shows ads; Modbus TCP FieldKit does not.

### Which is updated more often, Binary Calculator SDG or Modbus TCP FieldKit?

Binary Calculator SDG ships an update every 12 months, and Modbus TCP FieldKit weekly. Most recently, Binary Calculator SDG was updated on November 8, 2026 and Modbus TCP FieldKit on November 13, 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.*