Comparison

PLAYnJAM vs VAPolyMk4

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

Head to head
About

PLAYnJAM

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Become a real pianist now! and Discover the Music band. A lot of fun, with Two Play modes: Playmode 1: iPad alone Play Piano tiles game or Play 8 different instruments. Piano, Rock Organ, Church organ, Strings, Guitar, Pan Flute, Trumpet, Synth Each songs have 3 different arrangements Pop, Hip hop, or Electro and are progressive. Playmode 2: Connect in Bluetooth the non included iDance Keyboard Controller PLAYKEYS25 and Enjoy a real 25 keys high quality keyboard, with direct access to the 8 instruments, and discover 10 more instruments to play, without any inapp. All Menu pages can be accessed from your PLAYKEYS25 as well. How fun is it to capture the most precious moments of the year with a wink of rhythms? Let’s MUSIC your soul with the beat of most popular kid’s songs. 
 PLAYnJAM key features: 
Appealing, modern and diverse music genres to satisfy every music taste! 8 instruments to play the solo in direct access during demo mode, learn mode or game mode. We have 3x styles per songs: Pop, Hip hop, or Electro, hear the music like you never heard it before. Discover instruments mode (when connected to the iDance PLAYKEYS25 keyboard) with total of 18 instruments Discover Instruments mode includes cartoon video to present the instruments Learning mode have 3 speeds, learn at your pace. 
 Game’s rules: 1. Tap the correct keys 2. Avoid the wrong keys 3. Play on time, you can lower the tempo So, get ready to try out the most challenging piano game for free! 
Besides, to improve the game’s performance and offer a customized user experience, It is recommended to use the iDance PLAYKEYS25 Keyboard. Support: Are you having any problems? Send the email to info@idanceintl.com or contact us on our web site. 
PLAYnJAM is from iDance, the number one Karaoke and Musical instruments company for Youngster and teenagers. Music lovers can interact with hundred of our gear in our ecosystem. At iDance, we believe that it is YOUR MUSIC, it is YOUR STYLE – MUSIC is Easy, MUSIC is Fun.

About

VAPolyMk4

This app is a powerful bi-timbral polyphonic synthesizer with advanced features like output morphing and a ring modulator. It offers extensive sound design capabilities with multiple oscillators, filters, and envelopes, and can be used standalone or as an AudioUnit Extension.

Highlights
  • Bi-timbral polyphonic synthesis
  • Output morphing and ring modulator
  • Multiple oscillators, filters, and envelopes
  • Standalone and AudioUnit Extension (AUv3) support
  • Built-in effects and piano roll sequencer
  • MIDI 2.0 and Ableton Link support
  • iCloud Drive for project sharing
Features
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VAPolyMk4 is bi-timbral polyphonic synthesizer, which features output morphing, classic ring modulator and global offset parameter control. Each synthesizer consists of three oscillators, resonant low pass and hight pass filter, amplifier, three envelope generators and two LFO. Two synthesizers can be configured as layer or split. VAPolyMk4 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 Bi-timbral Polyphonic Synthesizer. Output morphing. Classic Ring Modulator. Global Offset Parameter Control. Three oscillators featuring hard sync and through zero FM. 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 Foot Pedal and Per Note Control. Support Ableton Link, Bluetooth MIDI, MIDI In / Out. Works on iPhone, iPad and Mac. Support iCloud Drive to share project files between the platforms. Full Factory Preset: 230, Synth CH: 160, Effect: 40 Improvements Support MIDI Foot Pedal (CC#11, CC#64) Support MIDI2.0 Per Note Control Messages MIDI CC Settings are saved. It will be recovered when the app launched in the next time. UI Color can be selected from black, navy or gray. System Requirements iOS 17.0 or later Devices with Apple Silicon are recommended. A13 Fusion or above is highly recommended. if sound is distorted when using a device with less CPU power, reduce number of voices. 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

PLAYnJAM4 screens
VAPolyMk44 screens

Verdict

The call

The clearest difference is price: PLAYnJAM at Free against VAPolyMk4's $14.99. PLAYnJAM also leads on iOS requirement (13.4 vs 16.6). On update cadence, ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

PLAYnJAM is free to download; VAPolyMk4 costs $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on June 1, 2026 and September 14, 2026 respectively.

Scorecard2 real differences · 8 level
PLAYnJAM versus VAPolyMk4: the parameters behind the verdict, then further details
ParameterPLAYnJAMVAPolyMk4
PriceFree — better$14.99
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS13.4 — better16.6
Further details — not scored
Size147 MB20 MB
Age rating4+4+
DeveloperiDanceRyo Togawa

In-app purchases

None

PLAYnJAM

No in-app purchases

None

VAPolyMk4

No in-app purchases

Questions

Is PLAYnJAM free?
PLAYnJAM is free to download, with no in-app purchases.
Is VAPolyMk4 free?
VAPolyMk4 costs $14.99, with no in-app purchases.
Do PLAYnJAM or VAPolyMk4 have ads?
Neither PLAYnJAM nor VAPolyMk4 shows ads.
Which is updated more often, PLAYnJAM or VAPolyMk4?
PLAYnJAM ships an update every 2 months, and VAPolyMk4 every 2 months. Most recently, PLAYnJAM was updated on June 1, 2026 and VAPolyMk4 on September 14, 2026.

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