MP1 Pro vs Groove Number
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MP1 Pro
This app emulates a classic guitar preamplifier, offering versatile tone shaping with virtual tube circuits, a digital delay, and analog modulations. It includes a power amplifier, reverb, noise gate, and compressor for comprehensive sound control.
- Tri-State Voicing selection (Distortion Tube, Clean Tube, Solid State)
- Four EL34 virtual tubes in power amplifier
- Digital delay with Lo-Fi and offset controls
- Analog Chorus or Tremolo modulation
- Hall reverb algorithm
- Tight, Low cut, and High cut filters
- Analog noise gate
- Studio compressor
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PREAMPLIFIER Nembrini Audio MP1 Pro Guitar Amplifier plugin is based on a ADA MP1* preamplifier. Nembrini Audio MP1 Pro features a Tri-State Voicing selection that allows you to choose between Distortion Tube, Clean Tube, or Solid State virtual circuits. POWER AMPLIFIER Powered by four EL34 virtual tubes with presence, resonance, volume and power switch in class AB push-pull configuration. DIGITAL DELAY FILTER make the delay Lo-Fi and OFFSET create a time offset in left/right delay sections ANALOG MODULATIONS select Chorus or Tremolo modulation AMBIENT REVERB Hall reverb algorithm FILTERS CLEANER TIGHT filter suitable for 7 / 8 strings guitar, Low and High cut filters PRE and POST amplifier ANALOG NOISE GATE tuned for guitar and bass with GATE speed control STUDIO COMPRESSOR keep your dynamics in check, whether just thickening the sound or keeping levels consistent Works as a standalone app, AudioUnit v3 effect, or Inter-App Audio effect. Legal Disclaimer: MP1 is a registered trademark of ADA Signal Processors, INC. Nembrini Audio MP1 Pro was developed by Nembrini Audio SRL based on its own modelling techniques. ADA Signal Processors, INC has not endorsed nor sponsored the Nembrini Audio MP1 Pro in any manner, nor licensed any intellectual property for use in this product.
Groove Number
Analyze the rhythmic feel of your music with detailed swing percentage, BPM, and key analysis. Visualize your groove through various graphical displays and export it as MIDI for use in your DAW. All analysis is performed on-device for privacy.
- Swing % analysis
- BPM estimation
- Key detection
- Multiple visualization modes
- Audio file analysis
- Live microphone analysis
- Groove to MIDI export
- Siri integration
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how swung is your track? groove number gives you the number. drop in a song, record a clip, or open the live mic — groove number listens and tells you the one thing drum machines flatten and great players bend: the groove. 50% is dead straight. ~66% is full triplet swing. most music that feels good lives in between, around 54–62%. now you can see it. and it's not just the number. what it reads • swing % — the hero. one honest number for how far off the straight grid the groove sits. • bpm — dual-estimator with an octave guard, so 174 never gets called 87. nudge it ×2 / ÷2 or tap the tempo to lock it, and the swing recomputes against the corrected grid. • key — chroma + krumhansl-schmuckler with a tuning estimate, shown with a confidence read and the runner-up key, so a close call never hides. four ways to see it • meter — the number, front and center: swing %, bpm, and key in one calm readout. • swing grid — the signature view. every onset plotted against the straight 8th/16th grid, colored on-time, late, or rushing. you can see the pocket. • spectrogram — mel-scaled heatmap, quiet to loud, low to high, with a frequency + dB scale. • chromagram — the 12 pitch classes over time, tonic marked. how it listens • a file you drop in or pick (mp3, m4a, aac, wav, aiff, flac) • a clip you record — it listens and stops on its own the moment the groove locks • the live mic — a running bpm + swing read in the room, with a VU level meter and a live spectrogram one more thing • groove → midi — export the groove as a midi clip, swing baked into the note timing. drop it on a drum track in any daw and it plays your pocket. hands-free • siri: "what's the groove number of this song" records a clip and stops on its own. "start listening in groove number" opens live. "what was the last groove number" reads you the last result. • shortcuts: analyze audio file returns swing, bpm and key for any file, so you can tag a folder of samples by bpm. open in groove number sends a file straight in. built to be calm and honest • fully on-device. your audio is analyzed right on your iphone, ipad, or mac. nothing is uploaded. nothing is stored on a server. • no account. no sign-up. no ads. no tracking. • strongest on four-on-the-floor and electronic music. live, acoustic, and rubato material is harder — so groove number always shows its confidence and hands you the ×2/÷2 and tap-tempo overrides. wrong calls stay visible, never silent. one number for the feel of a track. plus everything you need to trust it.
Screenshots
Verdict
The clearest difference is price: Groove Number at $1.99 against MP1 Pro's $9.99. Groove Number also leads on rating (5.0 vs 4.6) and update cadence (every 3 days vs every 44 months). MP1 Pro's advantage is ratings volume (9 vs 1) and iOS requirement (15 vs 17.0). On ads, in-app purchases, monetization model 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
MP1 Pro costs $9.99 and Groove Number $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Groove Number holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: MP1 Pro has 9 ratings behind it against 1, so its average is the more settled of the two.
MP1 Pro ships an update every 44 months, Groove Number every 3 days. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.
| Parameter | MP1 Pro | Groove Number |
|---|---|---|
| Price | $9.99 | $1.99 — better |
| Rating | 4.6 (9 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 9 — better | 1 |
| Update frequency | Every 44 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15 — better | 17.0 |
| Further details — not scored | ||
| Size | 28 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Nembrini Audio | Joshua Langberg |
Customer experience
MP1 Pro
Groove Number
In-app purchases
MP1 Pro
No in-app purchases
Groove Number
No in-app purchases









