# TR4 — Four Track Tape Recorder — A tape machine for your pocket > Pocket four-track tape recorder and editor with hardware integration. (iPhone/iPad app by Jonattas Poltronieri.) - Source: https://appshunter.io/ios/app/tr4-four-track-tape-recorder/id6790867439 (this page in markdown: same URL + `.md`) - Developer: [Jonattas Poltronieri](https://appshunter.io/developer/6790867441) - Category: Music - Price: Free with in-app purchases - Rating: 5.00/5 from 2 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 18.0 · 4 MB - Languages: American English - Released: 2026-07-30 - Data updated: 2026-08-27 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/tr4-four-track-tape-recorder/id6790867439/reviews.md ## What is TR4? TR4 is a four-track tape recorder and editor, built like an instrument. A giant disc with real physics sits at the center. Drag it to scrub with varispeed — even in reverse. Flick it and it spins down like real hardware. One rotation is two seconds of tape. MADE FOR HARDWARE Plug in any class-compliant USB audio device — such as the EP-133 K.O. II — and TR4 recognizes it by name, captures true stereo at 48 kHz, and arms itself. Press play on your groovebox and recording starts on the exact downbeat — from the MIDI signal if your device sends one, from the first sound if it doesn't. Stop the groove: the take ends, rewinds to zero and re-arms for the next pass. Record four passes onto four tracks without ever touching your iPhone. MIDI • Follows MIDI transport — start, stop and continue, from any device that sends it • MIDI Learn — map play, stop and record to a pad, a key or a footswitch • Live monitor — see exactly what your gear is sending RECORD • Four tracks with overdub — record one while the others play • 20 minutes per tape • Built-in mic, headset, Bluetooth or USB stereo input • Auto-record on USB signal, with noise calibration • Metronome with 3-2-1 count-in and a visual beat that never leaks into the mic • Auto-save: every take is kept as raw audio plus edits EDIT • Per-track volume, pan, mute and solo • Non-destructive crop with draggable handles • Loop playback while you fine-tune MAKE IT YOURS • Hold the disc to swap its look — a full collection of designs, from vinyl to street art EXPORT • Mix or separate stems, straight to the share sheet • M4A included free; WAV & AIFF with TR4 Pro TR4 PRO — ONE-TIME PURCHASE Unlock everything, once: WAV & AIFF export, separate stems, unlimited projects, all disc skins and voice transcription. No subscription. No accounts. No ads. No tracking. Your recordings never leave your device unless you export them. ## Key features - Four-track recording with overdubbing - Hardware synchronization via MIDI - Varispeed scrubbing and reverse playback - Non-destructive editing with draggable handles - Per-track volume, pan, mute, and solo - Export mix or separate stems - Customizable disc skins ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | TR4 Pro | $7.99 | one-time | ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/tr4-four-track-tape-recorder/id6790867439/reviews.md ### 5/5 — Get this! *2026-08-25* Yaaaaaas, keep it simple!!! This is what I was waiting for thank u sir! A+ ## Frequently asked questions about TR4 ### What is TR4? TR4 is a four-track tape recorder and editor designed for mobile devices. It offers features like overdubbing, varispeed scrubbing, and hardware integration for a tactile recording experience. ### Does TR4 have ads? No, TR4 is ad-free. The developer explicitly states 'No ads. No tracking.' ensuring an uninterrupted user experience. ### What are the recording capabilities of TR4? TR4 allows for four tracks with overdubbing, offering up to 20 minutes of recording per tape. It supports recording via built-in mic, headset, Bluetooth, or USB stereo input. ### How does TR4 integrate with hardware? TR4 recognizes class-compliant USB audio devices and can synchronize recording with external grooveboxes via MIDI transport. It offers auto-record on USB signal with noise calibration. ### What editing features does TR4 offer? TR4 provides per-track volume, pan, mute, and solo controls. It also includes non-destructive cropping with draggable handles and loop playback for fine-tuning. ### What export options are available in TR4? Basic export to M4A is included for free. WAV and AIFF export, along with separate stem exports, are available with the TR4 Pro upgrade. ### Is TR4 Pro a subscription or a one-time purchase? TR4 Pro is a one-time purchase. This unlocks all features, including WAV & AIFF export, separate stems, unlimited projects, all disc skins, and voice transcription. ### What devices is TR4 available on? TR4 is currently supported on iPhone. It is rated for ages 4 and up. ## Version history (last 4 releases) ### 1.3.1 — 2026-08-11 Updated the disc collection. ### 1.3 — 2026-08-04 MIDI TR4 now listens to your gear. Hit play on a MIDI device and recording starts on the exact downbeat — hit stop and the take ends on the spot, with no silence left to trim. • MIDI transport — start, stop and continue, from any device that sends it • MIDI Learn — map play, stop and record to a pad, a key or a footswitch • Live MIDI monitor — see exactly what your gear is sending *Also new* • 20-minute tapes, up from 5 • Rewind After Each Take — keep every pass aligned when layering, or turn it off to sketch without recording over what you just played • Cleaner punch-ins, and a transport that becomes a single record button while you're recording ### 1.2.1 — 2026-08-01 • Now runs on iOS 18 and later (previously required iOS 26.5 — sorry about that) • Small fixes and polish ### 1.2 — 2026-07-30 No release notes. ## Related topics [multitrack recording](https://appshunter.io/ios/topics/multitrack-recording) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*