SingOn vs AudioEngineer EAR Trainer

SingOn is a free karaoke app that lets you sing along to karaoke videos while your phone works as the microphone. ■ Karaoke microphone Turn on the mic and your voice comes straight out of the speaker, with echo for that karaoke feel. Pair a Bluetooth speaker and your living room becomes a karaoke room. On the phone speaker, anti-feedback turns on automatically. ■ Karaoke videos Pick a song and the instrumental (MR) video plays right inside the app - no app switching - and the mic turns on automatically. ■ Pick a key that fits your voice Choose original, lower or higher key and SingOn finds an instrumental video in that key. Your choice is remembered. ■ Browse like a songbook Karaoke hits, ballads, 70s & 80s, 90s, sad songs, duets and more. Or search any song and check it with a 30-second preview. ■ Record yourself Record while you sing and listen back later. Recordings stay on your device and are never uploaded. ■ Favorites & history Save your go-to songs and find what you sang recently. Search for karaoke places nearby from Settings through your maps app. ■ No sign-up No account needed. Favorites, recordings and settings stay on this device. The app is free, with an occasional ad after a song. A one-time purchase in Settings removes ads. ■ Five languages Korean, English, Japanese, Traditional Chinese and Simplified Chinese - song suggestions and categories follow your language. Song info, artwork and 30-second previews come from Apple's iTunes Search API. Karaoke videos play from YouTube.

AudioEngineer Ear Trainer is an ear-training app for audio engineers and musicians. Train your sense of frequency, your ear for noise, and your ear for effects — in two modes, Quiz (guess the answer) and Listen (free, unscored). No login, no ads, no tracking, and it works completely offline. ■ Frequency Ear Training Free · 10-band EQ boost/cut training with pink noise · Boost-only, cut-only, and mixed (guess the direction too) practice modes · Best-streak tracking Unlock Pro (one-time purchase) · 31-band 1/3-octave precision training (ISO 266 standard) · 12dB, 6dB, and 3dB boost/cut magnitude selection (mixed magnitude too) · Sine-wave-only listening mode · Left/right ear training — a different band is boosted or cut in each ear, and you identify both independently · Train with your own imported music ■ Noise Ear Training Free · Identify noise types (hiss, rumble, crackle, and more) Unlock Pro (one-time purchase) · More noise types added · Identify hum frequency (50Hz vs. 60Hz) · Noise floor detection — tell whether noise is present, and guess its level (-60/-50/-40dB) · All of the above support your own music as the background ■ Effects Ear Training Free · Identify 3 effect types — Reverb, Delay, Chorus Unlock Pro (one-time purchase) · 4 more effect types — Flanger, Phaser, Tremolo, Distortion (7 total) · A/B effect-intensity comparison (which is stronger?) · Import your own music to hear how each effect sounds on a real track ■ Mock Exam · A 10-question exam to check everything you've trained, all at once (Basic free / Pro version) · S–D grades and per-category accuracy to find your weak spots, with best-score tracking Available in Korean, English, Japanese, Spanish, Simplified Chinese, German, Brazilian Portuguese, and French. Runs on iPhone, iPad, Mac, and Apple Vision Pro.