MojoDeck vs REK
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MojoDeck
This app emulates vintage cassette recorders, adding warmth, instability, and unique character to digital audio. It offers granular control over tape emulation effects like wear, saturation, and wow & flutter, with two distinct tape formulations for diverse sonic textures.
- Vintage tape emulation
- Tape wear and saturation controls
- Wow & flutter effects
- Adjustable tape speed
- Two tape formulations (Ferric, Chrome)
- Analog-style VU meter
- Multiple export formats
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MD-1 is a cassette-inspired recorder for iPhone built for people who miss warmth, instability, and happy accidents. It combines vintage tape behavior with modern recording workflows, minus broken belts, dirty heads, and finding out your favorite cassette got eaten. TAPE CHARACTER CONTROLS Five sliders. Five ways to ruin perfection. Push the input gain into the red. Add Tape Wear for softened highs and tired old cassette energy. Drive Saturation for harmonic grit and glue. Introduce Wow & Flutter for subtle instability and capstan wobble. And change Tape Speed from 0.5x to 2.0x, with pitch following along as real tape would. Digital audio has spent decades trying to eliminate these things. We put them back. TWO TAPE FORMULATIONS Ferric (Type I): warm, bass-heavy, beautifully imperfect. Chrome (Type II): brighter, cleaner, slightly more civilized. Different EQ curves. Different saturation. Different personalities. RECORD WITHOUT THE DRAMA Punch in anywhere without losing the rest of your take. Monitor your input before recording. Watch your levels on a proper analog-style VU meter. Keep track of time with a mechanical tape counter because honestly… DAW timelines are boring. EXPORT YOUR WAY AAC. WAV. Dry. Saturated. Clean-ish. Completely cooked. Send recordings anywhere via AirDrop, email, SoundCloud, or whatever app your music disappears into next. BUILT LIKE A PIECE OF GEAR Portrait for quick captures. Landscape for full control. Supports USB audio interfaces, microphones and external gear. Double-tap Tape Speed to snap back to 1.0x. And yes, the reels spin faster when you speed up the tape. We know that doesn’t improve the sound. That’s not why we added it. MojoDeck MD-1 The best cassette recorder since the death of cassette recorders.
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.
- 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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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
Verdict
The clearest difference is rating: REK at 5.0 against MojoDeck's 3.0. REK also leads on iOS requirement (18.0 vs 26.0). MojoDeck's advantage is in-app purchases (none vs 1). On price, ratings volume, ads and device support 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
Both are free to download. REK sells 1 one-off in-app purchase. MojoDeck asks for nothing beyond the download.
REK holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
| Parameter | MojoDeck | REK |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (1 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 2 — better |
| Update frequency | — | Every 6 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone | iPhone |
| Requires iOS | 26.0 | 18.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Christoph Hartwig | Agli Panci |
In-app purchases
MojoDeck
No in-app purchases
REK
- Unlimited Recording$6.99









