Comparison

PRAXXIS vs VAPolyPro

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

Head to head
About

PRAXXIS

Features
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PRAXXIS is the music practice app that does something no other app can do. Drop in any song - any MP3, WAV, AIFF, or M4A from your library. PRAXXIS instantly detects the chords, key, tempo, and time signature. Then its on-device AI separates the song into individual instruments: drums, bass, guitar, piano, and vocals. Solo the bass line. Mute the vocals. Slow it down to 50%. Read the auto-generated notation. Practice your part with the rest of the band playing in your headphones. Everything runs on your device. No internet required. No uploads. No cloud processing. Your music never leaves your phone. PRACTICE FEATURES - AI stem separation - drums, bass, guitar, piano, vocals - Real-time chord detection with Nashville Number System - Auto-generated staff notation, guitar tablature, and drum patterns - Speed control 25-200% with 1% fine steps - pitch preserved - Transpose up or down 12 semitones - chords and notation update automatically - Section markers with voice cue announcements - Step-It-Up speed trainer - auto-increases tempo each loop - PDF sheet music import with auto-scroll - Practice sessions auto-save - pick up exactly where you left off PLAY ALONG - Plug in your instrument - hear yourself in the mix - MIDI keyboard detection with live chord display - Low latency monitoring - imperceptible - Foot pedal transport control VOICE CUES - 16 section types: Intro, Verse, Chorus, Bridge, and 12 more - Assign any keyboard key or MIDI pad to trigger a cue - MIDI Learn - tap Learn, hit any pad, assigned - Cue triggers jump the music to that section instantly WORKS OFFLINE - Stem separation runs on-device via Apple Neural Engine - All analysis is local - chords, key, tempo, notation - 16 voice cue audio files bundled in the app - 30 languages included - no downloads needed FREE - TRY EVERYTHING - First song each session unlocks all features - Chords, key, tempo, and Nashville numbers always free BASIC ($2.99/mo) - Pick 1 instrument to solo - drums, bass, guitar, piano, or vocals - Auto-generated notation, guitar tab, and drum patterns - Full speed range, unlimited markers, voice cues, PDF import PRO ($9.99/mo) - Full stem mixer - solo, mute, and mix every instrument - MIDI keyboard detection and MIDI Learn - Live audio input, Step-It-Up trainer, guitar isolation FOR EVERY MUSICIAN - Worship teams - Nashville numbers, voice cues, section loops - Session players - instant charts from any audio file - Students - slow down, loop, read notation, learn faster - Bass players, guitarists, drummers, vocalists, keyboardists - Available in 30 languages Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ NEW IN 1.2 — Smart Notation Switching. Solo a stem and the staff instantly matches: guitar shows tablature, piano shows treble clef, bass shows bass clef, drums show percussion patterns. Practice exactly what you hear, read exactly what you play.

About

VAPolyPro

Create a wide range of sounds with this polyphonic synthesizer, featuring multiple oscillator and filter types, MPE support, and built-in effects. It functions as a standalone app or an AudioUnit Extension for Mac and iOS devices, with iCloud Drive integration for project sharing.

Highlights
  • Multiple VCO and VCF types
  • Stereo VCF and VCA
  • MPE support
  • Built-in effects
  • Step sequencer
  • Audio Unit Extension (AUv3)
  • iCloud Drive project sharing
Features
Currently charting
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VAPolyPro features three types of VCOs and three types of VCFs that can generate a wide range of sounds, from warm analog synths to FM-synthesized acoustic instruments. It also includes a stereo VCF and VCA for spacious sound, and MPE for expressive sound. VAPolyPro operates as a stand alone or as an AudioUnit Extension (AUv3) for iPhone, iPad and Mac. Stand Alone supports Ableton Link, MIDI and audio file export. Built-in Effects include delay, chorus, flanger, reverb, eq and compressor. Project files can be saved in iCloud Drive, so that the project can be accessed from iPhone, iPad or Mac. Main Features 3 types of VCO includes Analog, Unison and FM. 3 types of VCF includes Cascade, Ladder And Sallen-Key. Stereo VCF and VCA. Support MPE through MIDI2.0 MPE Profile. Pseudo velocity/ pressure for iOS piano keyboard. 3 channel analog style step sequencer. Maximum 8 voice polyphony. it depends on performance of the device it is running. Built-in effects and piano roll sequencer. Audio Export. Linear PCM format (AIFF, WAV and CAF) and compressed format (AAC) Support Audio Unit Extension (AUv3). Support MIDI 2.0. Support Ableton Link, Bluetooth MIDI, MIDI In / Out. Works on iPhone, iPad and Mac. Support iCloud Drive to share project files between the platforms. Support MIDI Foot Pedal (CC#11, CC#64) MIDI CC Settings are saved. It will be recovered when the app launched in the next time. Selectable UI Color. Font size for title of controls are adjustable. - Factory Preset 336 - Effects Preset 40 System Requirements (This app is offered as universal purchase for iOS and macOS) iOS 17.0 or later macOS 14.0 or later Devices with Apple Silicon are recommended. A13 Fusion or above is highly recommended. AudioUnit Extension (AUv3) requires host application which support AudioUnit Extension. AudioUnit Extension is supported by Apple Logic and Apple Garage Band on iOS and macOS. For any other DAW, it depends on the application and some of them don’t support AudioUnit Extension.

Screenshots

PRAXXIS3 screens
VAPolyPro4 screens

Verdict

The call

The clearest difference is price: PRAXXIS at Free against VAPolyPro's $4.99. VAPolyPro's advantage is in-app purchases (none vs 4) and chart position (#100 vs unranked). On update cadence, ads, device support and iOS requirement 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

PRAXXIS is free to download; VAPolyPro costs $4.99 up front. PRAXXIS sells 4 in-app purchases, starting at $2.99 per month. VAPolyPro asks for nothing beyond the download.

UpkeepUpdate frequency

PRAXXIS ships an update every 4 days, VAPolyPro every 2 days. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.

Scorecard3 real differences · 8 level
PRAXXIS versus VAPolyPro: the parameters behind the verdict, then further details
ParameterPRAXXISVAPolyPro
PriceFree — better$4.99
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 4 daysEvery 2 days — better
AdsNoNo
In-app purchasesYesNo — better
Monetization—Paid
Best chart rank—#100 — better
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS16.0 — better16.6
Further details — not scored
Size337 MB22 MB
Age rating4+4+
DeveloperJoe ArchieRyo Togawa

In-app purchases

4 purchases

PRAXXIS

Subscriptions4
  • PRAXXIS Basic$2.991 Month
  • Pro Monthly$9.991 Month
  • Basic Annual$24.991 Year
Show 1 more
  • Pro Annual$79.991 Year
None

VAPolyPro

No in-app purchases

Questions

Is PRAXXIS free?
PRAXXIS is free to download, with in-app purchases available.
Is VAPolyPro free?
VAPolyPro costs $4.99, with no in-app purchases.
Do PRAXXIS or VAPolyPro have ads?
Neither PRAXXIS nor VAPolyPro shows ads.
Which is updated more often, PRAXXIS or VAPolyPro?
PRAXXIS ships an update every 4 days, and VAPolyPro every 2 days. Most recently, PRAXXIS was updated on October 28, 2026 and VAPolyPro on October 29, 2026.

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