QCurve Music Player
High-fidelity offline music player with custom 32-bit DSP
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QCurve Music Player - High-fidelity offline music player with custom 32-bit DSP

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Experience your offline music library with unmatched acoustic clarity. QCurve is a high-fidelity offline music player and precision audio equalizer built around an advanced native C++ DSP engine. Designed for audiophiles and audio engineers, it is the ultimate MP3 and FLAC player for those who demand absolute control over their sound.

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I’m the solo developer behind QCurve Music Player.

Outside of software, I design and build custom physical loudspeaker arrays and analog audio amplifiers. But when it came to listening to my local FLAC and MP3 libraries on Android, I couldn't find a mobile player that matched that hardware-level precision. The market is saturated with players that are either bloated with memory-hogging SDKs, riddled with screen-hijacking ads, or reliant on standard OS audio APIs that lack true signal control.

I wanted a premium, offline-first utility for true audiophiles—so I built one from scratch.

QCurve is built on a custom 32-bit float native C++ DSP engine using Oboe AAudio. It bypasses standard audio bottlenecks to give you zero-latency, bit-perfect control over your local library while maintaining an incredibly lean memory footprint.

Core Features:

Hybrid 10-Band EQ: Seamlessly switch between a standard Graphic EQ (GEQ) and a full Parametric EQ (PEQ) with pinpoint Frequency and Q-factor sweeping.

Audiophile FX: Headphone Crossfeed, Tube Saturation (analog warmth), Tape Rolloff, dynamic Silence Trimming, and a custom Reverb matrix.

Phantom Sub: A psychoacoustic bass enhancer that synthesizes 2nd and 3rd harmonics, allowing deep sub-bass to be heard on compact Bluetooth speakers and earbuds without distorting the driver.

Synchronized Lyrics (New in v1.3): A zero-bloat, 3-tier offline-first lyrics engine. It reads your local .lrc files first, falls back to the open-source LRCLIB API if missing, and caches directly to disk.

Zero UI Clutter: A purely gesture-driven edge-to-edge UI, featuring a highly-optimized 60fps real-time spectrum visualizer that auto-sleeps to save battery.

What feedback would help most?

Because Android hardware and OEM audio routing are notoriously fragmented, I am actively looking for feedback on:

1. DSP Stability: How do the Parametric EQ and Phantom Sub perform on your specific device architecture?

2. The UI/UX Flow: Does the new synchronized lyrics transition feel natural? Is the tri-state folder manager handling your massive SD-card libraries smoothly?