iDiagnostic vs SoundStems

iDiagnostic is a fast, easy-to-use hardware diagnostic tool for iPhone and iPad. In just a few taps, verify that every key hardware component on your device is working correctly: DISPLAY - RGB color test cycles through Red, Green, and Blue full-screen patterns to spot dead pixels and color shifts. TOUCH SCREEN - Configurable grid (4x3 to 20x12) covers the entire screen so you can confirm every region responds correctly. - Real-time progress counter — tap to fill cells, get instant pass/fail when complete. CAMERAS - Detects every physical camera on your device — wide, ultra-wide, telephoto, TrueDepth, LiDAR. - Test each one individually with live preview and capture. LOUD SPEAKER - Plays a recognizable melody (Twinkle Twinkle Little Star) through the bottom speaker so you can verify audio output and quality. INTERNAL SPEAKER (EARPIECE) - Same melody routed through the top earpiece — hold the phone to your ear to confirm. MICROPHONE - Record your voice with a live audio level meter, then play it back to verify recording and playback both work. PRIVACY FIRST iDiagnostic runs entirely on your device. No data is ever collected, transmitted, stored, or shared. The app makes zero network requests. Your camera, microphone, and test results stay 100% on-device. LANGUAGES Available in English and Vietnamese — automatically follows your device's system language setting. Perfect for: - Anyone buying a used iPhone — verify hardware before paying - Phone repair shops checking refurbished devices - Developers testing app permissions and AVFoundation behavior - Tech enthusiasts curious about which cameras their phone has No ads. No tracking. No accounts. Just a clean diagnostic tool that does one thing well.

SoundStems splits a song into its parts. Load a track and it separates into vocals, drums, bass and music, each one its own channel you can turn up, turn down, mute or solo. It all happens on your iPhone. The separation model runs on the device itself, so nothing is uploaded, there is no server, there is no account, and it works with no signal at all. WHAT YOU CAN DO WITH THE PARTS Mute the vocals and you have a backing track. Solo the drums and you have something to play along to. Push the bass up and the music down and you can hear what the low end is actually doing. Every part has its own fader. CHANGE THE KEY OR THE SPEED, NOT BOTH Shift the pitch in semitones with the clock untouched, or change the speed with the key untouched. They are separate controls because they are separate problems. PLACE EACH PART AROUND YOU Every stem has a 3D position. Move the vocal in front of you and the drums off to one side and listen to the song from inside it. FEATURES - Splits any song into vocals, drums, bass and music - The model runs entirely on your device, with no upload and no server - Fader, mute and solo on every part - Pitch shift with the speed held, and speed change with the key held - 3D placement of each part with spatial audio - Save any part as MP3, M4A, FLAC, ALAC, WAV, AIFF, Opus or CAF - Works completely offline - No ads, ever - No subscriptions, ever - No account, and no data collected SoundStems is free. There are no ads, there are no subscriptions, and there is nothing to unlock. It collects no data from you, because it has no networking in it at all. Built by Brandon Walker, doing business as Lee Wyatt Corp. Apps are published under Brandon's legal name while the Lee Wyatt Corp LLC completes formation. Every one of them is a genuine Lee Wyatt Corp product. Have an idea for an app or a game of your own? Lee Wyatt Corp builds them start to finish, and we would love to build yours. Bring it to leewyattcorp.com. Find all our apps and games at leewyattcorp.com.