Comparison

GrainProc vs Drone Meditations

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

Head to head
About

GrainProc

Create unique sounds and musical textures in real-time by processing external audio. This app features two parallel granular engines for layering sounds, offering a versatile tool for musicians and sound designers.

Highlights
  • Real-time granular synthesis
  • Two parallel grain engines
  • AudioBus input support
  • Waveform sound source manipulation
  • Control over volume, feedback, and density
  • Visual level monitoring
Features
Read full description

GrainProc is a real-time granular synthesizer with which you can create new sounds and musical textures by affecting your voice, your instrument, or any input from AudioBus. 2 grain engines run in parallel, allowing you to layer two sounds and create rich textures, even as a solo performer! Features: • 2 Granular synthesizers running in parallel • Waveform representation of the sound allowing you to touch where you want the sound source to be • Sliders to control dry volume, wet volume, feedback level, and grain density • Visual level monitors of the dry, wet and feedback levels • Simple enough to be used with your feet! We discourage using your device with your feet, though it has been used that way for public performances!

About

Drone Meditations

Features
Read full description

A deep four-oscillator drone synthesizer for meditation, sound healing, and ambient composition. Inspired by Pauline Oliveros, Éliane Radigue, Stars of the Lid, William Basinski, and the long-form drone tradition. Real synthesis, real tuning systems, real cymatics — designed for listeners who want to go deep. Most "drone apps" give you a few sliders and call it ambient. Drone Meditations gives you a real instrument. SOUNDS YOU CAN SIT WITH FOR HOURS • Four oscillators per patch — sine, triangle, sawtooth, square, white / pink noise, granular pink, or loaded sample • Per-voice filter (LP / HP / BP), drive, cross-osc FM, stereo chorus, three-mode delay with musical timing, stereo Schroeder reverb • Twenty multi-target LFOs per patch (five per voice). LFOs 1–4 hit amp / pan / cutoff / Q / pitch / FM / FX-Mix; LFO 5 has its own row of granular + FX targets (grain, delay, reverb). Each LFO's rate can lock to a musical subdivision of the tempo. • Per-voice timing envelopes — fade in over minutes, fade out later, repeat N times or forever. Rotate harmonically across 20 minutes without touching a slider. • Six tuning systems: 12-TET, just intonation, Pythagorean, Lou Harrison Free JI, Wendy Carlos α/β/γ, Harry Partch 43-tone DESIGNED FOR THE DRONE TRADITION • 110+ presets across Drone Artists, Developer Patches, Solfeggio, Natural Resonance, Cymatics, Mystic & Composers, and Binaural categories — plus an INIT preset pinned at the top • 48 Drone Artists tributes — Oliveros, Riley, Radigue, Stars of the Lid, Sunn O))), Basinski, Niblock, Palestine, Budd, Coltrane, and more — capturing each artist's waveforms, FX, and tuning, not just their pitches • 21 Developer Patches showcasing granular sampling, BPM-locked grain density, FX-Mix LFO swells, and the JG hybrid pad/groove series • Modal chord category — the 7 diatonic modes plus Harmonic and Melodic Minor — with quantize-to-scale so pitch-modulated voices arpeggiate across all 7 mode degrees • Auto-morph between any two presets over 30 s to 60 min • 25 scripted meditation journeys (Deep Listening, Heavy Resonance, Minimalist Arc, and 22 more) • Tune to Room — global LISTEN snaps the chord root to a pitch from the mic; per-strip ear icon snaps just one voice LIVE CYMATICS THAT BREATHE WITH THE AUDIO • Physically-calibrated Chladni patterns fit from real plate- vibration footage. The renderer crossfades between two adjacent eigenmodes bracketing each voice's live frequency — vibrato breathes between physical modes, not styled animation. • Pinch to zoom; tap to enter fullscreen Performance mode with a drifting sand-particle simulation along the nodal lines • Cymatic snapshot gallery + spectrum-analyzer alternative GRANULAR + TEMPO • Granular waveform: pink noise chopped into Hann-windowed grains with size, density, jitter, stereo spread, per-voice overlap • Granular sampling: same scheduler on any loaded sample — freeze a bansuri forever, smear a chord into a tape-decay cloud • BPM-quantized density (½ → 1/32T) locks grain spacing to the global tempo. Per-LFO rate sync extends musical subdivisions to LFO speed. Metronome click toggle for an audible reference. RECORD, SHARE, AND COMPOSE • Mastered session recording: 24-bit WAV + AAC M4A sidecar with loudness normalization, automatic fades, embedded metadata • Per-voice mic record captures into a voice's sample slot — normalized, granular-ready, with the current frequency as the sample's reference pitch • 50+ bundled samples: bansuri, organ, piano, storm, tide, forest, urban, cosmic • Cross-device preset sharing via .dronepreset files — AirDrop a patch between web, iPhone, and iPad, samples embedded inline. iCloud auto-syncs samples-free presets across devices. One-time purchase. No subscription, no accounts, no tracking. Free web version: dronemeditations.com

Screenshots

GrainProc4 screens
Drone Meditations4 screens

Verdict

The call

The clearest difference is price: GrainProc at $2.99 against Drone Meditations's $14.99. GrainProc also leads on ratings volume (18 vs 1). Drone Meditations's advantage is rating (5.0 vs 4.2) and update cadence (every 3 weeks vs every 2 months). On ads, in-app purchases, 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

GrainProc costs $2.99 and Drone Meditations $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Drone Meditations holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: GrainProc has 18 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

GrainProc ships an update every 2 months, Drone Meditations every 3 weeks. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
GrainProc versus Drone Meditations: the parameters behind the verdict, then further details
ParameterGrainProcDrone Meditations
Price$2.99 — better$14.99
Rating4.2 (18 ratings)5.0 (1 ratings) — better
Positive reviews60.0% of reviews—
Number of ratings18 — better1
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better17.0
Further details — not scored
Size6 MB131 MB
Age rating4+17+
DeveloperMayank SanganeriaJOSE ANTONIO GUDE

In-app purchases

None

GrainProc

No in-app purchases

None

Drone Meditations

No in-app purchases

Questions

Is GrainProc free?
GrainProc costs $2.99, with no in-app purchases.
Is Drone Meditations free?
Drone Meditations costs $14.99, with no in-app purchases.
Which has better reviews, GrainProc or Drone Meditations?
Drone Meditations is rated higher. GrainProc averages 4.2 out of 5 from 18 ratings, while Drone Meditations averages 5.0 from 1 ratings.
Do GrainProc or Drone Meditations have ads?
Neither GrainProc nor Drone Meditations shows ads.
Which is updated more often, GrainProc or Drone Meditations?
GrainProc ships an update every 2 months, and Drone Meditations every 3 weeks. Most recently, GrainProc was updated on October 23, 2026 and Drone Meditations on October 24, 2026.

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