Studio Field vs REK. The Performance Recorder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Studio Field
This pocket sound lab offers a drum machine, bass synth, ambient synth, and microphone sampler for iPhone and iPad. It also includes a companion Mac app for managing your OP-1 Field device, allowing you to capture and shape sounds anywhere.
- Drum machine with 8 procedural voices
- Deep bass synth with ladder filter
- Ambient synth for lush pads
- Microphone sampler with iCloud sync
- Companion Mac app for OP-1 Field management
- Stereo sampling directly to OP-1 Field
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Studio Field is a powerful companion for your Teenage Engineering devices - manage, back up, transfer, organize, and preview your content from iPhone or iPad. Your purchase also includes Studio Field for Mac, with libraries and backups synced through private iCloud. Supports: • OP-1 field • OP–XY • OP-1 original • OP-Z • EP–133 K.O. II • EP–1320 medieval • EP–40 riddim • TP-7 OP-1 FIELD • Connect over USB-C • Browse, transfer and preview tapes • Full device backup and restore, synced with Mac through iCloud • Multitrack tape playback with mute, solo and tape speed • Searchable offline Field manual OP–XY • Connect over USB-C to import and send projects, samples and presets • Full backup and restore with iCloud sync • Record stereo USB audio and sync takes with Mac • Searchable offline OP–XY manual TP-7 • Connect over USB-C • Browse and manage recordings directly from iPhone or iPad • Transfer recordings between TP-7 and your Library • Full device backup and restore • Sync your TP-7 Library and backups with Mac through private iCloud OP-1 ORIGINAL • Connect over USB • Browse tape, synth, drum and album • Save content to your Library or send it back to the device • Convert original tapes to OP-1 field format • Full-disk backup and restore • Searchable offline OP-1 original manual OP-Z • Connect over USB-C • Browse projects, samplepacks, bounces and config • Save content to your Library or send it back to OP-Z • Full-disk backup and restore • Searchable offline OP-Z manual EP SERIES Dedicated support for EP–133 K.O. II, EP–1320 medieval and EP–40 riddim. • Browse and manage samples over USB • Each EP has its own Library, backups and iCloud space • Sync EP Libraries and backups with Mac LIBRARY & ICLOUD • Dedicated Library and backups for each supported device • Optional private iCloud sync across iPhone, iPad and Mac • Share tapes, albums, samples and recordings through AirDrop, Files, Mail and more STORE Discover free and premium sound packs for OP-1 field and OP–XY, created in collaboration with Colors In Space / John Gorton. • Preview packs before installing • One-click install sends every file to the correct location on your device • No need to understand folder structures or manually manage files • Save packs to your Library for later PLAYGROUND When you don’t have hardware connected, sketch ideas with the built-in Drum Machine, Bass Synth, Ambient Synth and Microphone Sampler. INCLUDED — STUDIO FIELD FOR MAC Your purchase also includes the full Studio Field for Mac — with device management, browsing and preview, backups, Libraries, Workspace, Store, Tape Club, Community and more. Direct USB features require a supported device, a data-capable USB cable, and the correct USB transfer mode on the connected device. Playground and Library features work without external hardware. DISCLAIMER Lithium ehf. is an independent developer and is not affiliated with, endorsed by or connected to Teenage Engineering. “OP-1,” “OP-1 field,” “OP–XY,” “OP-Z,” “EP–133 K.O. II,” “EP–1320 medieval,” “EP–40 riddim,” “TP-7” and “Teenage Engineering” are trademarks of their respective owners. https://studiofield.app/privacy https://studiofield.app/terms
REK. The Performance Recorder
Easily capture audio ideas without complex setup. This app records directly to your device, offering high-quality audio capture and flexible playback options. Export your recordings in various formats for use in other applications.
- 32-bit float recording
- USB audio interface support
- Sample-accurate looping
- Trim and varispeed playback
- Export to WAV, AIFF, AAC
- Direct export to Files and DAWs
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REK is a recorder for the idea you're about to forget. Plug in a USB interface, or just use the phone's microphone, press RECORD, and keep the take. One screen, one deck of controls, and nothing between you and the thing you came to capture. Nothing to set up, nothing to name. Every recording saves itself the moment you stop. Capture • 32-bit float by default, so a hot input is stored rather than destroyed on the way in • 44.1, 48 or 96 kHz, at 32-bit float, 24-bit or 16-bit • Stereo when the input offers it, mono when it doesn't. The display never claims a channel that isn't there. • USB audio interfaces appear as ordinary inputs, next to the built-in mic • Gain in 2 dB steps, and what you hear while monitoring is what's being written • Separate left and right meters with a peak lamp, scaled against real levels • If the disk fills or a write stalls mid-take, whatever reached disk is kept. A partial performance beats no performance. Playback • Loop a take, sample-accurate at the boundary • Trim the start and end without cutting the original file • Varispeed from ×0.50 to ×1.50, on a fader down the right edge • Metronome with a one or two bar count-in, 40 to 240 BPM Export • WAV, AIFF or AAC, to Files, AirDrop, Messages, or straight into a DAW • WAV follows the take's own depth, so the lossless option is actually lossless • Optional peak normalize, off by default, so an ordinary export is bit-exact • Exports are kept as well as shared, so you can fetch one again without re-rendering it Your recordings They live in Files.app as plain audio, named for when they happened. No account, no cloud, no sync, no library database to lose them in. Rename one in Files and you've renamed the performance. The device • Light, dark or system chassis, and ten accent colours • Real haptics on every key, knob and fader, with a key click you can switch off • Knobs come back where you left them; double-tap any control to snap it home • VoiceOver throughout, and Dynamic Type on everything the screen shows Free to try Everything works from the first launch, with takes capped at one minute. The library, looping, trimming and export all stay open, so you'll never record something good and then find you can't get it out. One purchase lifts the cap for good. No subscription, no account, no analytics.
Screenshots
Verdict
The clearest difference is price: REK. The Performance Recorder at Free against Studio Field's $29.99. REK. The Performance Recorder also leads on review sentiment (100% vs 60%) and iOS requirement (18.0 vs 26.0). Studio Field's advantage is chart position (#55 vs unranked) and ratings volume (5 vs 1). On rating, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
REK. The Performance Recorder is free to download; Studio Field costs $29.99 up front. Studio Field sells 10 one-off in-app purchases and REK. The Performance Recorder sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for Studio Field against 5.0 for REK. The Performance Recorder. That said, the two scores are not equally well evidenced: Studio Field has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 60% of Studio Field's written reviews are positive against 100% of REK. The Performance Recorder's.
Studio Field ships an update every 5 days, REK. The Performance Recorder every 3 days. The most recent releases landed on September 30, 2026 and September 21, 2026 respectively.
| Parameter | Studio Field | REK. The Performance Recorder |
|---|---|---|
| Price | $29.99 | Free — better |
| Rating | 5.0 (5 ratings) | 5.0 (1 ratings) |
| Positive reviews | 60.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 5 — better | 1 |
| Update frequency | Every 5 days | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Best chart rank | #55 — better | — |
| Devices | iPhone, iPad, Mac — better | iPhone |
| Requires iOS | 26.0 | 18.0 — better |
| Further details — not scored | ||
| Size | 179 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Lithium ehf | Agli Panci |
Customer experience
Studio Field
REK. The Performance Recorder
In-app purchases
Studio Field
- OP-1 Field Dust$9.99
- OP-1 Field Field Memories$9.99
- OP-1 Field Analog Classics$14.99
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- OP-XY Yesterday's Machines$14.99
- OP-XY Analog Classics Pro$14.99
- OP-XY Sound In Motion$14.99
- OP-XY Memory Bloom$14.99
- OP-XY Koto Skies$14.99
- OP-XY BRISTOL$19.99
- OP-XY Memories$19.99
REK. The Performance Recorder
- REK Unlocked$4.99





