# GUI-1256

> GUI-1256 (iPhone/iPad app by Fabrizio Boco.)

- Source: https://appshunter.io/ios/app/gui-1256/id6443750653 (this page in markdown: same URL + `.md`)
- Developer: [Fabrizio Boco](https://appshunter.io/developer/466239616)
- Category: Productivity, Business
- Price: $3.99
- Age rating: 4+
- Requires: iOS 15.0 · 2 MB
- Languages: English, Italian
- Released: 2022-10-18
- Data updated: 2026-05-20
- User reviews in markdown: https://appshunter.io/ios/app/gui-1256/id6443750653/reviews.md

## What is GUI?

Cheap boards based on the Texas Instruments ADS-1256, a very low noise 24-bit ADC, are provided by many sellers.
This boards can be easily integrated into any project, but they can also be used as 4 channels voltmeter to integrate the lab measurement instruments.
Working on complex projects having an additional instrument with a good precision may be extremely helpful.
GUI-1256 is an iOS and macOS application which transforms a simple ADS1256 board in an additional lab instrument, Bluetooth BLE enabled.
GUI-1256 main features are:
•	4 Differential voltage measurements. Without any additional components the ADS1256 can read 4 voltages of +/- 3V max.
•	Bluetooth connection to the measurement device, allowing to get remote measurements
•	Enabling and disabling any of the 4 available channels
•	Optional synthesize voice which reads the measurements, allowing to get measurements without looking at the iOS or macOS device
•	Shifting and scaling. Each of the 4 measurement channels can be independently scaled and shifted
•	Mathematical Expressions. The measurements can used in mathematical expressions to get other quantities. For example, a temperature sensor voltage can be read, and an expression can be used to directly transform the voltage into the temperature
•	Graphs (iOS 16 or greater only). Each of the 4 channels and the expressions can be shown as graphs.
•	Two points calibration to get even more precise measurements
•	Firmware Over The Air Update. The firmware can be update or upgraded directly from the application. First installation requires Arduino IDE and some additional software components available for free


## Version history (last 1 release)

### 1.0 — 2022-10-18

No release notes.

## More apps by Fabrizio Boco

- [Matrix Lab](https://appshunter.io/ios/app/matrix-lab/id337754158)
- [DCircuit Lab](https://appshunter.io/ios/app/dcircuit-lab/id382544208)
- [DCircuit Lab HD](https://appshunter.io/ios/app/dcircuit-lab-hd/id392966166)
- [Bode & Nyquist](https://appshunter.io/ios/app/bode-and-nyquist/id445573307)
- [Arduino Manager](https://appshunter.io/ios/app/arduino-manager/id497240094)
- [Logic Analyzer](https://appshunter.io/ios/app/logic-analyzer/id980880317)

All apps by Fabrizio Boco: https://appshunter.io/developer/466239616

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-20.*