One person builds this.
One person answers.

Yes, and the free player stays free. The free player gives you your whole library, live speed and pitch, the waveform tools, full-length video export and a set of themes and visualizers to start with. Pro is a one-time unlock that adds the effect rack, the rest of the catalogue and full-length audio export — what it adds, and what it costs, is laid out here.

The purchase people mean by Pro is one payment: it never renews, and there is no account to keep alive. Once it is bought it is yours, and it follows you to your next iPhone on the same Apple Account. A monthly plan exists for people who would rather not pay up front, and buying it outright is the cheaper route by a wide margin — both are laid out here.

Open Settings inside the app and tap Restore Purchases. That asks Apple to re-check what your Apple Account owns.

The usual cause is being signed in with a different Apple Account than the one that paid — a family member's, or an older account of your own. If it still won't restore, email me the receipt Apple sent you and I'll sort it out.

Apple handles every purchase, so refunds go through Apple rather than through me. Use reportaproblem.apple.com, signed in with the Apple Account that made the purchase.

I never see your payment details — see the privacy policy.

Files you already own. Three ways in: import them from the Files app, share them into Y2K Player from another app, or hand it a video and it pulls the audio out for you.

Each file is copied into the app's own library. The original is left exactly where it was.

No, and no third-party app can. Songs downloaded inside a streaming app are DRM-protected copies that only that app is allowed to read — that is a rule of the platform, not a limitation of this app.

Music you own as actual files — bought, ripped from your own discs, exported from your own project, or made yourself — imports normally.

Almost always the same reason: they are protected streaming copies, which no app can open. The importer tells you how many it skipped for that reason, so the number in that message is your answer.

Anything that is a real audio file sitting on your device should come in. If one doesn't, send me its name and format and I'll look at it.

Never. Speed, pitch and every effect are applied to the sound as it plays, not written back to disk. Your audio files are only ever read.

From 25% up to 200%, moving in 5% steps — or 1% steps if you turn on fine control in Settings.

A full octave in either direction: −12 to +12 semitones.

Linked is vinyl mode: tempo and pitch are one dial, so speeding the song up raises its pitch exactly like a record. 150% lands around +7 semitones; 200% is +12.

Unlinked keeps the original pitch when you change the tempo, and gives pitch its own slider.

Nightcore is linked. Practising a solo at 60% is unlinked.

Yes — that is the point of the app. Speed, pitch, effects, loop points and the look you picked are remembered per song. Come back a month later and it plays the way you left it.

Audio as M4A (AAC) or WAV, and video as a 1080p MP4 in 16:9, 9:16 or 4:3. Everything you hear — the speed, the pitch, and the effects if you have Pro — is rendered into the file. The visualizers run on screen while you listen; they are not filmed into a video export.

iOS plays MP3 but ships no MP3 encoder, so no iPhone app can write one without bundling third-party licensed code.

M4A is the same idea, sounds better at the same file size, and every app and editor accepts it. If you genuinely need an MP3, convert the M4A once it's off the phone.

Never on audio. That rule doesn't bend — a watermarked audio file would be a ruined audio file.

Free video exports are full length and carry a small corner mark; Pro removes it. Free audio exports are capped at the first 30 seconds, and Pro exports the whole song.

It's an ordinary MP4 with AAC audio, so anywhere that accepts a video file accepts this one. Pick the aspect that matches where it's going before you render — that choice can't be changed afterwards without rendering again.

Whether you have the right to publish a particular song is between you and whoever owns it. The app doesn't grant you any rights to the music you put into it.

Yes. Y2K Player is built for iPhone and iPad, and one purchase covers both on the same Apple Account.

No. Playback, speed, pitch, effects, visualizers and export all run on the device. Turn the wifi off and nothing changes — that's the whole idea.

None. No accounts, no analytics, no tracking, no servers of mine. Your files and playlists stay on your device. If you are signed into iCloud, a small amount of state rides your own iCloud so a new phone feels familiar — your favourites, your listening counters and streak, and a few preferences like the theme you picked. The privacy policy says it in full, and it's short.

Email me three things and it usually gets fixed in the next update: what you were doing when it happened, which device you're on, and the iOS version from Settings → General → About.

A screen recording is the fastest thing you can send me.

Yes. Describe what you're trying to make rather than the control you think is missing — the problem usually suggests a better answer than the feature request does.