Comparison

Pure Acid vs DJCJ Player

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

Head to head
About

Pure Acid

This app is a high-quality bassline synthesizer and drum machine inspired by classic 80s hardware. It offers a retro analog sound with modern features for fast and fun music creation. Explore various genres with factory presets and create unique rhythms and basslines.

Highlights
  • AUv3, Ableton Link, AudioBus, IAA support
  • Classic bassline waveforms (Saw, Pulse)
  • Distortion and filter LFO effects
  • 32-step sequencer with pattern editing
  • 16 independent drum parts with customizable sounds
  • Realtime master effects with XY-pad
Currently charting
Read full description

Pure Acid is a top quality bassline synthesizer and drum machine in one app! Inspired by classic hardware bassline synthesizers and rhythm machines, which changed musical world back in 80's, like the legendary TB-303 synthesizer, TR-808 / 707 / 909 rhythm boxes and their numerous replicas, Pure Acid is designed to bring back the feeling of retro analog gear in every detail in terms of sound, as well as to provide new functions previously unavailable in the original devices to make your music creation workflow fast and fun! A large number of factory preset patterns will immerse you into an exciting world of Acid House, Techno, Hardcore and Big Beat music genres, which will inspire you to create your own basslines and rhythms for your compositions! You can use Pure Acid app as a ready-to-go realtime musical instrument (groove box) in your jam sessions together with Ableton Link to synchronize it with the rest of your music gear. Its bassline editing system and randomization options will be handy to create unique groovy basslines easily. Realtime master effects with XY-pad controls can add expression to your live performance. You can also use Pure Acid with AudioBus, AUM or other IAA-supporting apps to create complex and interesting sound setups. Features: • supports AUv3, Ableton Link, AudioBus, Inter-App Audio, Core Midi, Virtual Midi In/Out, Bluetooth Midi • AudioBus state saving support • 64-bit sound engine • Midi Learn • Export to midi file • includes Multiple Output AUv3 plugin with 6 audio output busses Bassline Section: • 2 classic bassline waveforms: Saw and Pulse • classic knobs: Tune, Cutoff, Resonance, Env Mod, Decay and Accent • Distortion effect with amount, HPF and Boost knobs • filter LFO with rate and depth knobs Sequencer Section: • up to 12 bassline patterns can be stored in one preset • up to 32 steps per each bassline pattern • patterns can be chained together to create more complex patterns • pattern Tempo and Swing parameters • Gate parameter, which allows you to adjust bass note lengths • Pattern Editor allows you to copy, transpose patterns, shift notes left/right, insert or delete a note, variate (randomize all note properties expect pitch), shuffle (randomize notes order only), reverse and compose patterns using Bassline Composer function • onscreen keyboard allows you to enter bassline notes in a comfortable way. You can also record basslines in realtime. Drums Section: • 16 independent drum parts • 35 different classic drum sounds with ability to tune your own drum kit • each drum part sound has its own parameters: Tune, Decay, Attack/Snap/Color, FX A send, FX B send, Boost, Pan, Level • up to 12 drum patterns and 4 drum fill patterns per preset • 16 steps per each drum pattern, with ability to add 16 "backbeat" steps between main steps (32 steps per drum pattern in total) • patterns can be chained together to create more complex patterns • Swing and Flam features • Total Accent part with adjustable total accent value can give you ability to "highlight" specific steps in your drum pattern • new: step conditions for drum steps Mixer Section: • 2 mixer channels: Bassline and Drums • Drive effect for each channel • 2 send effect pedals: FX A and FX B • 14 send effect types • send effect can be routed to either master output, MFX or another send effect (FX A -> FX B), which allows to chain several effects one after another • MFX pedal with 22 effect types to choose from • FX A and FX B send amount knobs for each mixer channel • XY-pad on each effect pedal to control their parameters • Master Limiter effect to prevent sound clipping and more: • Unlimited number of user presets • 84 factory presets • Audio export to wav file (16, 24 or 32 bit) • Preset / Bank Share function • Selectable UI color schemes with ability to adjust colors manually • Can work either as a standalone app, or as AUv3 audio unit plugin • Designed for both iPad and iPhone

About

DJCJ Player

Features
Read full description

If you like to have an analog-style pitch control for your music, like the pitch control on a turntable, DJCJ Player is for you. You can set the low and high value of the pitch control slider from -50% to +50%. It allows pitch shift in as little as .01% increments. Pitch and speed increase together just like on an analog turntable. Optimum sound quality is maintained. Free. No Ads. No subscriptions. No in-app purchases. Just a gift from DJCJ to you. This app will only play music that is synced to your device. It does not play music from any subscription streaming service. It does not play DRMed music.

Screenshots

Pure Acid4 screens
DJCJ Player4 screens

Verdict

The call

The clearest difference is price: DJCJ Player at Free against Pure Acid's $7.99. DJCJ Player also leads on in-app purchases (none vs 2). Pure Acid's advantage is chart position (#114 vs unranked) and iOS requirement (13.0 vs 26.5). On update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

DJCJ Player is free to download; Pure Acid costs $7.99 up front. Pure Acid sells 2 one-off in-app purchases. DJCJ Player asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 29, 2026 and October 28, 2026 respectively.

Scorecard4 real differences · 7 level
Pure Acid versus DJCJ Player: the parameters behind the verdict, then further details
ParameterPure AcidDJCJ Player
Price$7.99Free — better
Rating4.9 (169 ratings) — better—
Positive reviews94.1% of reviews—
Number of ratings169 — better—
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
Best chart rank#114 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better26.5
Further details — not scored
Size44 MB4 MB
Age rating4+4+
DeveloperDmitrij PavlovCHRISTOPHER ALAN JOHNSON

Bugs and requests

Pure Acid

Reported bugs

2 issues
  • GUI scaling issues on smaller devices
  • Crashes or freezes on certain devices

Requested features

4 requests
  • Ability to import MIDI files
  • Standalone drum machine mode
  • Expanded drum sample library
  • Knob/parameter automation recording

DJCJ Player

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Pure Acid

One-time2
  • Ukrainian style color scheme$4.99
  • Ukrainian style app icon$4.99
None

DJCJ Player

No in-app purchases

Questions

Is Pure Acid free?
Pure Acid costs $7.99, and also offers in-app purchases.
Is DJCJ Player free?
DJCJ Player is free to download, with no in-app purchases.
Do Pure Acid or DJCJ Player have ads?
Neither Pure Acid nor DJCJ Player shows ads.
Which is updated more often, Pure Acid or DJCJ Player?
Pure Acid ships an update every 3 weeks, and DJCJ Player every 3 weeks. Most recently, Pure Acid was updated on October 29, 2026 and DJCJ Player on October 28, 2026.

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