Ringtone Switcher

Say goodbye to monotonous ringtones! "Ringtone Switcher" is a **comprehensive local ringtone playlist & audio editing tool** tailored specifically for Android users. Not only does it automatically and seamlessly rotate to the next ringtone after every phone call, it also integrates **professional audio trimming, lossless multi-track merging, cable-free P2P sharing between phone and PC**, and **real-time battery monitoring in the status bar**. Simply pick your favorite songs stored on your device and enjoy a personalized ringtone experience—from editing, merging, and wireless transfer to automatic playlist rotation! ──────────────────────── ✨ All-New Evolution! Key Highlights: ──────────────────────── 📱【Dual SIM Independent & Synced Switching】 The ultimate lifesaver for Dual SIM users! SIM 1 and SIM 2 support independent custom playlists and playback modes, easily keeping work and personal life distinct. You can also sync SIM 2 with SIM 1 with a single tap for effortless dual SIM management. 🎶【Sequential Rotation & True Random Playback】 Supports both "Sequential Playlist Rotation" and "Cryptographic Anti-Repeat Random Playback". Even when switching playback modes mid-stream, the app intelligently continues to the next song instead of resetting to the very beginning. ✄【Professional Audio Trimmer】 Want the best part of a song as your ringtone? Features a built-in precision waveform visual editor! • Audio Effects: Supports smooth fade-in and 0.5x–2.0x variable speed playback. • Target Volume Normalization: Supports decibel normalization and loudness enhancement, eliminating volume discrepancies between different tracks. 🎼【Lossless Audio Merger】 Want to combine multiple favorite tracks into a continuous medley? • Flexible Track Ordering: Rearrange the sequence of audio tracks freely with zero-latency preview playback. 📲【Zero-Data P2P Fast Transfer (Music Share)】 Transfer songs between your phone and PC without USB cables! • Zero Mobile Data Usage: Ultra-fast peer-to-peer transmission via local Wi-Fi or mobile hotspot. • Seamless Cross-Platform Support: Wirelessly transfer between mobile devices and Windows PC in both directions. • Full Directory Transfer: Supports single tracks, all file formats, or entire folders while preserving original directory structures. ⚡【Real-Time Battery Monitor】 View real-time charging and discharging information directly in the persistent notification bar! • Instantly monitor real-time charging/discharging wattage (W), battery cell voltage (V), current (A), temperature (°C), and battery cycle count (🔃). 🚀【Boot Auto-Start & Zero-Latency Standby】 Automatically validates playlists on boot and mounts the active ringtone. The status bar displays the next scheduled ringtone in advance. Ensures precise, reliable ringtone switching even when the screen is locked, in deep sleep, or in battery saver mode. 🛡️【100% Local Operation & Zero Privacy Upload】 No account registration or login required. All music files, audio edits, and transfer data remain strictly on your local device. Phone state permissions are only used to detect call completion to trigger rotation; we never read, record, or upload your call logs or contacts! ──────────────────────── 📌 Friendly Reminder: This application is an offline local audio management and editing tool. The app does NOT provide any online music search, streaming, or downloading services. Please use audio files legally stored on your device.