Comparison

EP vs REK

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

EP

Read full description

EP-PatchStudio builds sample kits and multisamples for Teenage Engineering's EP-series samplers, then sends them to your device over USB. It also backs up your projects and lets you manage the samples on your device from your iPhone or iPad. If you own an EP-133 K.O. II, EP-1320 Medieval or EP-40 Riddim, you know the squeeze: great sounds, a tiny screen and a slow road from a sample on your phone to a pad on your sampler. This app is the shortcut. Import audio, trim it, build a kit and load it onto the hardware. CHOP A BREAK INTO HITS Open a drum break and Chop Sample slices it by transients, into equal parts or to a grid. Keep the strongest 8 and they land on the pads, named and ready to play as an EP-40 kit. You can also turn them into a multisample or save them as separate WAV files. Free. ROOM FOR MORE SOUNDS On a K.O. II, Fit More makes a sample mono, lowers the rate and, where the pitch allows it, turns on Double Speed, in one tap. Undo puts it back. Free. WHAT YOU CAN DO • Import WAV and AIFF from Files, iCloud Drive or another app through the share sheet • Trim, fade, loop and tune samples by touch, in one-shot, key or loop mode • Create multisamples for the EP-40 Riddim, mapped across the keyboard • Normalise, trim and rename a whole batch of samples in one pass • Browse, preview and replace the samples on your device in the File Manager • Back up your device and keep every backup in a library you can restore from • Open a project to see its pads and patterns on a timeline, then export MIDI, stems or an Ableton Live set WORKS WITH • EP-133 K.O. II • EP-1320 Medieval • EP-40 Riddim Multisamples are for the EP-40 Riddim. No hardware to hand? You can still build and edit, then send it over when you plug in. FREE AND PRO The Sample Editor, Chop Sample and Fit More are free, with no ads and no account. Connecting your EP and checking its storage are free too. Pro adds sending to your device, the File Manager, the Batch Processor, backups, the Project Viewer and the Project Library. Every Pro tool is open for 14 days after you install, with no sign-up. After that, Pro is a one-off in-app purchase. Buy once, no subscription. Already bought EP-PatchStudio on Mac or Windows? Enter your licence key to unlock the same here. A NOTE FROM ME I'm a solo developer and a sampler nerd. I built EP-PatchStudio because I wanted grown-up software for these little machines, and I keep improving it based on what the community asks for. If something is missing or broken, tell me. Not affiliated with or endorsed by Teenage Engineering AB. EP-133 K.O. II, EP-1320 Medieval and EP-40 Riddim are trademarks of Teenage Engineering AB, used here only to describe compatibility.

About

REK

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.

Highlights
  • 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
Features
Read full description

Record your synth, groovebox or drum machine straight into your iPhone, up to four tracks at once. Plug in over USB-C, press RECORD, and the take is saved: 32-bit float, up to 96 kHz, ready for your DAW as a mix or as stems. REK is a recorder built like a piece of hardware: one screen, one deck of keys and knobs, nothing to set up and nothing to name. It works with class-compliant USB audio devices and with the iPhone's own microphone. PLUG IN AND RECORD • Class-compliant USB audio: interfaces, mixers, grooveboxes and synths with USB audio out. • Up to four tracks in one take, each on the input you choose: a single input or a stereo pair. Every input lights up with its signal, so you can see which one you are playing into. • The tracks are cut from the same audio, so they line up to the sample. • 32-bit float by default, so a hot signal is stored instead of clipped. 24-bit and 16-bit too, at 44.1, 48 or 96 kHz. • Gain in 2 dB steps, and what you hear while monitoring is what's being written. • Left and right meters with a peak lamp, and a meter for every track. MIX IT • Every take opens on channel strips: level, pan, mute and solo per track. • You hear changes as you make them, and they are saved with the take. • An export contains exactly what you hear. NEVER MISS THE FIRST NOTE • Head start: REK is always listening, so the second before you press RECORD is on the take. • Hands free: press RECORD and the take starts when you start playing. • Count-in: one or two bars of click, and the take starts on the downbeat. • Pause and resume while recording, with a clean join. • Record from the Action Button, Control Center, the Lock Screen or Siri. LOOP IT, PITCH IT • Loop any take, and trim the start and end without touching the original file. • Record length: set 1 to 16 bars and the take ends exactly on the bar, then loops. • Varispeed from ×0.50 to ×1.50, pitch and all, like tape. • Metronome from 40 to 240 BPM, through the take or through playback too. • Keep listening with the phone locked, with play and stop on the Lock Screen. GET IT OUT • WAV, AIFF or AAC, to your DAW, AirDrop, Files or Messages. • Stems: one WAV per track, named for the performance and its track. • WAV keeps the take's own bit depth, so lossless means lossless. • Optional peak normalize, off by default, so an ordinary export is untouched. YOUR TAKES • Plain audio files in the Files app, named for the minute they were recorded. No account, no cloud, no database. • Rename them, tag them (VOCALS, DRUMS, IDEAS, LOOP or your own), and filter the library by tag. THE DEVICE • Light, dark or system finish, and ten accent colours. • Haptics on every key, knob, fader and mixer strip, at the strength you choose. • Double-tap any control to snap it home. • VoiceOver throughout, and Dynamic Type on the display. • Long-press the speaker to blow it. Playback only: your recordings are never touched. FREE TO TRY Everything works from the first launch, with takes up to one minute long. The mixer, looping, trimming, tags and export are never limited, so you'll never record something good and then find you can't get it out. One purchase removes the limit for good. No subscription, no account, no ads, no analytics. Requires iOS 18 or later.

Screenshots

EP4 screens
REK4 screens

Verdict

The call

The clearest difference is update cadence: REK at every 6 days against EP's fortnightly. EP's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 18.0). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. EP sells 4 one-off in-app purchases and REK sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

EP ships an update fortnightly, REK every 6 days. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 7 level
EP versus REK: the parameters behind the verdict, then further details
ParameterEPREK
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyFortnightlyEvery 6 days — better
AdsNoNo
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better18.0
Further details — not scored
Size40 MB5 MB
Age rating4+4+
DeveloperPhoton Consulting LimitedAgli Panci

In-app purchases

4 purchases

EP

One-time4
  • Tip: Coffee$5.00
  • Tip: Lunch$10.00
  • Tip: Dinner$20.00
Show 1 more
  • EP-PatchStudio Pro$29.00
1 purchases

REK

One-time1
  • Unlimited Recording$6.99

Questions

Is EP free?
EP is free to download, with in-app purchases available.
Is REK free?
REK is free to download, with in-app purchases available.
Do EP or REK have ads?
Neither EP nor REK shows ads.
Which is updated more often, EP or REK?
EP ships an update fortnightly, and REK every 6 days. Most recently, EP was updated on October 29, 2026 and REK on October 24, 2026.

Other comparisons