---
title: "REF-440 Tuner - Reviews, Revenue and Downloads in Germany | Apple App Store"
description: "REF-440: The tuner that disappears when you need to play.  REF-440 is designed for musicians who demand precision and clarity. Inspired by Dieter Rams and Teenage Engineering, every pixel serves a pur"
---

# REF-440 Tuner — Germany

![REF-440 Tuner App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/59/a2/b9/59a2b930-f630-ce72-8859-ce66d159f4bb/AppIcon-0-0-1x_U007epad-0-1-85-220.jpeg/434x0w.png)

**Developer:** [Amr Rashed](https://apptail.io/developer/amr-rashed-SCjGqb)
**Category:** Music
**Rating:** 5.0/5 (1 ratings)
**Price:** Free
**Bundle ID:** amr.Guitar-Tuner
**Store:** Apple App Store
**Country:** Germany
**Version:** 1.4 (released 2026-01-14)
**Original Release:** 2026-01-06
**Languages:** English, Arabic, Dutch, French, German, Italian, Japanese, Portuguese, Chinese, Spanish

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/de/app/app/id6757130720)
**AppTail Page:** [https://apptail.io/app/ref-440-tuner-IWcy/germany](https://apptail.io/app/ref-440-tuner-IWcy/germany)

## REF-440 Tuner Description
REF-440: The tuner that disappears when you need to play.

REF-440 is designed for musicians who demand precision and clarity. Inspired by Dieter Rams and Teenage Engineering, every pixel serves a purpose. No ads. No clutter. Just a precision instrument that helps you tune and get back to making music.

Precision You Can Feel

REF-440 uses the McLeod Pitch Method (MPM) algorithm, optimized for real-time guitar tuning. With ±2¢ accuracy, adaptive smoothing, and intelligent note locking, you get stable readings that don't jump around — even in noisy environments.

Designed Like an Instrument

The interface mimics a hardware tuner: a dark "faceplate" display panel, needle meter with ghost trails, and LED indicator. The 135-point note display is readable from across the room. Orange means action, neutral means success.

Context-Aware Instructions

Forget "flat" and "sharp." REF-440 tells you what to do: TIGHTEN or LOOSEN for strings, TUNE UP or TUNE DOWN for chromatic mode. Physical actions for physical instruments.

Every Guitar Player's Needs

Guitar — 12 tuning presets including Standard, Drop D/C/B, Open G/D, DADGAD, and more
Bass — Standard, Drop D, Half-Step Down, 5-String
Ukulele — Standard (High-G), Low-G, Baritone
Chromatic — Detect any pitch across the full frequency spectrum
Thoughtful Customization

Reference pitch from 415 Hz (Baroque) to 466 Hz (bright orchestral)
Capo support (0-12 frets)
Sharp/flat display preference (A# vs Bb)
Adjustable noise gate for any environment
Optional in-tune chime (customizable sound)
Keep screen on while tuning
Premium Details

Standby mode saves battery — tap to resume
Home screen and Control Center widgets (iOS 18+)
Siri Shortcuts for reference tones
Live Activity during tuning sessions
VoiceOver accessible with meaningful labels
Respects Dynamic Type and Reduce Motion settings
Built for Musicians, by Musicians

REF-440 is a single-purpose tool that does one thing exceptionally well. No subscriptions, no premium upgrades, no feature gates. Just a tuner that works.

## REF-440 Tuner Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/3a/4c/8f/3a4c8ff7-9f48-ba98-ebf0-30cc8bcf71d7/01.jpg/1242x2688.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/b6/25/a1/b625a179-6e46-b098-583c-318e35ae98da/02.jpg/1242x2688.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/65/0c/0a/650c0a06-1ddf-34b5-bbfc-ab4d283708bb/03.jpg/1242x2688.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/e0/d2/d8/e0d2d8a8-0a6e-39db-25fa-d2f8035e04c4/04.jpg/1242x2688.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/8f/f1/38/8ff138a1-b84b-f0b4-29ce-15818f17b07c/05.jpg/1242x2688.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/a0/ea/de/a0eadee1-6bd2-8679-7bb4-506c5c396a5b/06.jpg/1242x2688.png)
- [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/e3/ba/3d/e3ba3d77-13c4-bfbe-0169-ff6d2b67e43f/07.jpg/1242x2688.png)
- [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/d6/93/7f/d6937f61-0232-81eb-820e-3a8d6d6cc218/08.jpg/1242x2688.png)
- [Screenshot 9](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/b5/3d/7d/b53d7dac-7a76-493d-2338-f2cbc5a36005/09.jpg/1242x2688.png)

## REF-440 Tuner Rating Breakdown in Germany
- 5 stars: 1 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 0 (0%)






## REF-440 Tuner Available In
- [Germany](https://apptail.io/app/ref-440-tuner-IWcy/germany)
- [Belize](https://apptail.io/app/ref-440-tuner-IWcy/belize)
- [Egypt](https://apptail.io/app/ref-440-tuner-IWcy/egypt)
- [Croatia](https://apptail.io/app/ref-440-tuner-IWcy/croatia)
- [Japan](https://apptail.io/app/ref-440-tuner-IWcy/japan)
- [Poland](https://apptail.io/app/ref-440-tuner-IWcy/poland)
- [Saudi Arabia](https://apptail.io/app/ref-440-tuner-IWcy/saudi-arabia)
- [Ukraine](https://apptail.io/app/ref-440-tuner-IWcy/ukraine)
- [Argentina](https://apptail.io/app/ref-440-tuner-IWcy/argentina)
- [United States](https://apptail.io/app/ref-440-tuner-IWcy/united-states)

---

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