Comparison

Battalion vs GRFX

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

Head to head
About

Battalion

This advanced music production tool offers a powerful drum machine with extensive synthesis, sampling, and sequencing capabilities. Craft intricate rhythms and evolving patterns with per-step modulation, generative sequencers, and built-in effects for deep sound design.

Highlights
  • 20+ synthesis algorithms
  • 5 sampler algorithms
  • 8 drum channels with simultaneous sample/synth
  • 11 filter and 11 distortion modes
  • Per-step modulation and generative sequencers
  • Euclidean and permutation pattern engine
  • Global performance controls
  • Built-in Shatter Delay and Headspace Reverb
Read full description

"A deep world to get lost in - This delivers that in spades!" - Jamie Lidell, Hanging Out With Audiophiles Unfiltered Audio is back on iOS with its instant classic Battalion, perhaps the most advanced drum machine available on any platform. Battalion includes over 20 synthesis algorithms and 5 sampler algorithms, each built for advanced sound design via simple controls. All eight drum channels can use both samples and synthesis simultaneously. 11 filter modes and 11 distortion algorithms add further sculpting options to each voice. Additionally, all eight drum channels contain rich modulation available for every parameter, including two LFOs, two envelopes, and more. A global Performance page shows a simplified interface that allows you to manipulate every drum channel simultaneously. Want to hear your drum beat tuned down an octave with a single knob? Done. Need a global boost to distortion or a dramatic filter gesture? Easy. Each drum channel contains two sequencers. The first sequencer is a manual step sequencer with ratcheting, probability, velocity, pitch, micro-timing, and more... per-step! Each parameter lane can run at a different speed and length, making generative, evolving patterns a breeze. The second sequencer combines Euclidean patterns with an Unfiltered-designed permutation engine. Both sequencers run in parallel and receive further shaping via an array of Sequence Modifiers. Want one drum sequence to speed up while another slows down? The SHAPE parameter is here for you. Need that hi-hat to be a bit lazy? SHIFT will nudge it to rush or drag. And if you think drum machines have no soul, wait until you combine per-channel SWING with global HUMANIZE. All of this advanced sound design is glued together with a flexible mixer and Unfiltered Audio's evocative effects. Battalion contains two new Unfiltered Audio effects: Shatter Delay and Headspace Reverb. Shatter Delay combines granular stretching, dynamic ducking, sample crushing, and feedback spectrum sculpting into a melange of echo bliss. Dubby, dark, dotted echoes? Chaotic glitch storms? It's all here. Headspace Reverb evolves Silo's ten classic reverb algorithms with additional filtering options. You will always find the perfect reverb for your drum mix. Battalion includes over 150 presets to get you started. These cover a wide variety of genres and tempos, from glitch and IDM by esteemed sound designer DataBroth, to futuristic hip-hop from Willie Green (head of our favorite Backwoodz Studioz). From smoky and loose to shiny and mechanical, Battalion is ready to be your go-to solution for every rhythmic task.

About

GRFX

Transform ordinary audio into unique sonic textures, evolving soundscapes, and rhythmic glitches. This app offers precise control over sound manipulation with a unique pitch controller, multiple LFOs, and a flexible multi-effect chain. Create complex and immersive audio transformations in real-time.

Highlights
  • Granular engine for textures and rhythms
  • Harmonic Triangle pitch controller
  • Multi-effect chain with probabilistic routing
  • Four self-modulating LFOs
  • Real-time audio sculpting
  • AUv3 plugin and standalone app
Features
Read full description

GRFX is a powerful and creative granular effects processor that turns ordinary audio into extraordinary sonic landscapes. Slice your sound into grains and reshape them into evolving textures, shimmering chords, rhythmic glitches, haunting drones, and more. At the heart of GRFX is the Harmonic Triangle – an intuitive 3-way pitch controller that lets you morph simple tones into lush pads, arpeggiated patterns, or abstract gestures. Whether you’re aiming for organic soundscapes or synchronized stutters, GRFX gives you precise control over the flow of grains and modulation. Build complexity with four self-modulating LFOs, a multi-effect chain with probabilistic routing, and an elegant drag-and-drop modulation system. Shape your sound, modulate nearly every parameter, and sculpt immersive audio transformations in real time. Key Features: - Granular engine for creating textures, rhythms, chords, glitches, drones, ambiences, and more - Harmonic Triangle for 3-way pitch control, detuning, and microtonality - Built-in Chord Selector with 32 triads for instant harmonic richness - Grain envelope shaping for plucky, smooth, or abrupt grains - Buffer size, division, sync, and freeze controls - Rhythmic synchronization for tempo-synced effects and patterns - 4 LFOs with self-modulation and drag-and-drop assignment - Modulation panel & view mode for streamlined modulation management - 2 Multi-Effect slots (Filter, Distortion, Delay, Peak EQ, Chorus, Phaser, Bitcrusher, Reverb) with probability-based routing - Dedicated Send FX with Delay and Reverb in series or parallel mode - Flexible mixer section for sculpting wet/dry balance and routing AUv3 Audio Unit plugin – requires an AUv3-compatible host app such as Logic Pro, GarageBand, AUM, or Cubasis. Standalone version included.

Screenshots

Battalion4 screens
GRFX4 screens

Verdict

The call

The clearest difference is price: GRFX at $6.99 against Battalion's $39.99. GRFX also leads on update cadence (monthly vs every 5 months). Battalion's advantage is review sentiment (92% vs 78%) and ratings volume (33 vs 11). On rating, ads, in-app purchases and monetization model 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

Battalion costs $39.99 and GRFX $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for Battalion against 4.6 for GRFX. Both are backed by a comparable volume of ratings — 33 and 11 respectively. Written reviews are what separate them: 92% of Battalion's written reviews are positive against 78% of GRFX's.

UpkeepUpdate frequency

Battalion ships an update every 5 months, GRFX monthly. The most recent releases landed on September 21, 2026 and September 9, 2026 respectively.

Scorecard5 real differences · 5 level
Battalion versus GRFX: the parameters behind the verdict, then further details
ParameterBattalionGRFX
Price$39.99$6.99 — better
Rating4.6 (33 ratings)4.6 (11 ratings)
Positive reviews91.7% of reviews — better77.8% of reviews
Number of ratings33 — better11
Update frequencyEvery 5 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.0
Further details — not scored
Size1.2 GB117 MB
Age rating4+4+
DeveloperUnfiltered AudioImaginando Lda

Customer experience

Battalion

All ratings33 ratings
Positive93.9%
Neutral0.0%
Negative6.1%
Written reviews24 reviews
Positive91.7%
Neutral0.0%
Negative8.3%

GRFX

All ratings11 ratings
Positive90.9%
Neutral0.0%
Negative9.1%
Written reviews9 reviews
Positive77.8%
Neutral0.0%
Negative22.2%

In-app purchases

None

Battalion

No in-app purchases

None

GRFX

No in-app purchases

Questions

Is Battalion free?
Battalion costs $39.99, with no in-app purchases.
Is GRFX free?
GRFX costs $6.99, with no in-app purchases.
Which has better reviews, Battalion or GRFX?
Battalion and GRFX are both rated 4.6 out of 5 on the App Store, from 33 and 11 ratings respectively.
Do Battalion or GRFX have ads?
Neither Battalion nor GRFX shows ads.
Which is updated more often, Battalion or GRFX?
Battalion ships an update every 5 months, and GRFX monthly. Most recently, Battalion was updated on September 21, 2026 and GRFX on September 9, 2026.

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