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Free
In-App Purchases
About
This app functions as a four-track tape recorder and editor, designed with a tactile interface. It allows for overdubbing, precise recording synchronization with external hardware, and flexible editing options. Recordings can be exported in various formats, with advanced features available through a one-time purchase.
✓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
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What's New in TR4
1.3.1
August 11, 2026
Updated the disc collection.
1
In-App Purchases
$7.99
TR4 Pro
WAV/AIFF export, stems, unlimited projects & skins
User reviews
FAQ
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.