---
title: "GPF Easy Diapason - Reviews, Revenue and Downloads in Argentina | Apple App Store"
description: "GPF Easy Diapason is a simple tuning fork app for iPhone.  It plays a continuous reference tone to help tune instruments and voices. The interface is clean and minimal, with quick controls for sound s"
---

# GPF Easy Diapason — Argentina

![GPF Easy Diapason App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/2a/02/35/2a023598-9279-0559-b6da-f9d65033671a/AppIcon-0-0-1x_U007ephone-0-1-85-220.png/434x0w.png)

**Developer:** [Gian Paolo Fontani](https://apptail.io/developer/gian-paolo-fontani-PduVCb)
**Category:** Music
**Rating:** N/A (0 ratings)
**Price:** Free
**Bundle ID:** net.GianPaoloFontani.GPFEasyDiapason
**Store:** Apple App Store
**Country:** Argentina
**Version:** 1.0 (released 2026-03-05)
**Original Release:** 2026-03-05
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/ar/app/app/id6760007666)
**AppTail Page:** [https://apptail.io/app/gpf-easy-diapason-KkTy/argentina](https://apptail.io/app/gpf-easy-diapason-KkTy/argentina)

## GPF Easy Diapason Description
GPF Easy Diapason is a simple tuning fork app for iPhone.

It plays a continuous reference tone to help tune instruments and voices.
The interface is clean and minimal, with quick controls for sound setup.

Main features:
- Tap the 3D tuning fork to start or stop sound
- Reference frequency presets: A440, A432, A444, Baroque 415
- Base frequency control from 220 Hz to 880 Hz
- Fine tuning in cents (-50 to +50)
- Volume control
- Waveform selection: Sine, Square, Triangle, Saw
- Real time frequency display in Hz
- Version and build info in footer

Design:
- Black and white style
- Clear typography
- Focused single screen workflow for fast use

Technical notes:
- Built with SwiftUI
- Audio engine based on AVAudioEngine and AVAudioPlayerNode
- Automatic build number increment on each build

This app is made for musicians, students, choir practice, and anyone who needs a fast and reliable pitch reference on iPhone.

## GPF Easy Diapason Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/b6/4c/51/b64c51cb-d369-3d91-a88b-082acd1193dd/Simulator_Screenshot_-_iPhone_di_Gian_Paolo_-_2026-03-04_at_10.11.07.png/1242x2688.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/cd/c4/66/cdc466a4-fa5c-eacf-183f-fe0552174926/Simulator_Screenshot_-_iPhone_di_Gian_Paolo_-_2026-03-04_at_10.11.18.png/1242x2688.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/d2/1b/25/d21b25d3-e43a-b48b-55a3-2809572eb557/Simulator_Screenshot_-_iPhone_di_Gian_Paolo_-_2026-03-04_at_10.11.10.png/1242x2688.png)







## GPF Easy Diapason Available In
- [Argentina](https://apptail.io/app/gpf-easy-diapason-KkTy/argentina)
- [New Zealand](https://apptail.io/app/gpf-easy-diapason-KkTy/new-zealand)

---

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