Comparison

Beatly Pro vs GSDSP Quantum Delay

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

Head to head
About

Beatly Pro

Generate unlimited original looped music in various genres. Features include a powerful piano roll, chord progression builder, and stem exporting. Ideal for creators needing unique soundtracks.

Highlights
  • Unlimited original looped music generation
  • Multiple genre styles (rap, lo-fi, chiptune, cinematic, dance)
  • Advanced piano roll with undo and pattern editor
  • Chord progression builder
  • Export to MIDI and render stems
  • Sample recorder and import
  • Audiobus and Ableton Link sync support
Features
Read full description

Beatly Pro is a generative music studio for moments when you want to create but need a spark. Generate rap-inspired, lo-fi, chiptune, cinematic, and dance instrumentals, then shape them into your own tracks with hands-on arranging, editing, mixing, and export tools. Beatly Pro is not an AI music generator. It creates music on your device from curated patterns, musical rules, and controlled randomness—no prompts, cloud generation, or trained AI models. Whether you need quick inspiration, a backing track, or fresh material for a larger production, Beatly Pro takes you from the first generated idea to a finished track. FEATURES • Generate as many new musical ideas as you like • Create and arrange up to 8 bars of music • Build tracks with up to 7 instruments • Edit notes in a flexible piano roll with undo, velocity controls, copy and paste, real-time beat transposition, a chord-aware keyboard lock, and reusable custom patterns • Build your own chord progressions and change the key or chord of individual beats • Regenerate a single instrument part while keeping the rest of your track • Let Song Mode arrange the generated bars for you • Set the key and tempo, or let Beatly choose them • Mix every channel with volume, solo, mute, low-pass filtering, resonance, decimation, reverb, delay, and compression • Record your own samples or import WAV and AIFF audio • Import SF2 SoundFont banks • Use drag and drop for WAV samples and SF2 sound banks • Save and recall drum-kit presets • Import a four-beat region from a MIDI file directly into the piano roll, with optional transposition • Export the complete track as MIDI or create separate MIDI files for each instrument • Render WAV mixes, individual stems, or a seamless loop of the full track • Record a live performance to WAV • Send MIDI from instrument channels, with configurable channel assignments and drum-note mappings • Connect through Audiobus with the full mix and separate MIDI outputs for drums and each instrument group • Synchronize tempo and transport with Ableton Link • Save your tracks and return to them later WHO IS BEATLY PRO FOR? Beatly Pro is made for producers and composers seeking inspiration; singers and artists who need a beat to write or rehearse with; game developers, filmmakers, and content creators looking for distinctive instrumental music; musicians who want a customizable practice accompaniment; and anyone curious about generative music. HOW DOES IT WORK? Open Beatly Pro and tap Play. The app chooses a set of instruments, tempo, key, and musical patterns, then creates up to 8 bars—32 beats—of instrumental music. Tap Next whenever you want to generate a different idea. Every generated track is yours to shape. Rearrange or repeat its bars, change the tempo or key, swap sounds, adjust the mix, regenerate one instrument, or open the piano roll and edit the notes yourself. Choose from five styles: Default, Lo-fi, Chiptune, Cinematic, and Dance. The Default style is well suited to rap-inspired beats, while every style brings its own instruments and musical character. For more control, use the chord progression builder to define the harmony, or create custom bar patterns that Beatly can use when generating future tracks. You can also change the key or chord of any beat, and Beatly will transpose its notes to match. When your track is ready, save it, export it as MIDI, record your performance, render a WAV mix, create stems, or export a seamless loop for use in another project. You can also connect Beatly Pro to your studio setup through MIDI, Audiobus, or Ableton Link. CAN I USE MY OWN SOUNDS? Yes. Record a sample inside the app, import a WAV or AIFF file, or load an SF2 SoundFont bank. Samples tuned to C will usually give you the most predictable melodic results. Enjoying Beatly Pro? A rating or review on the App Store means a great deal. You can also support future development through the optional tip jar.

About

GSDSP Quantum Delay

This app offers a vintage-inspired stereo delay effect with advanced modulation, flexible filtering, and precise timing controls. It allows users to sculpt unique echo textures, from warm analog sounds to complex, evolving soundscapes.

Highlights
  • Vintage-inspired stereo delay
  • Deep modulation system
  • Flexible filtering (LPF, HPF, BPF)
  • Precise timing controls (BPM, ms)
  • Switchable stereo/dual mono modes
  • Advanced modulation sources (LFO, Random, Envelope)
Features
Read full description

A vintage-inspired delay supercharged with deep modulation, flexible filtering, and creative timing that pushes echoes into new dimensions. Classic Delay, Reinvented Quantum Delay takes the charm of a vintage stereo delay and fuses it with our next-level modulation system. Switch between the warm character of Tape mode and the pristine clarity of Fade mode, lock to BPM (including 5-tuplets) or dial in precise times in milliseconds. Use the Fine control for subtle push-and-pull micro-timing — or modulate your delay lines in ways traditional delays could only dream of. Sculpted Echoes Shape your repeats with switchable lowpass, highpass, and bandpass filters placed directly in the feedback path. Add modulation to create evolving tones, gentle movement, or drifting, frequency-shifting echoes. From warm analog-style rolls to shimmering, swirling textures, it’s all there. Feedback with Precision Control your delay tail behavior using either traditional % feedback or our modern dB-per-second decay system — ideal for predictable, musical decay even when the feedback path becomes complex. Enable Crossfeed for classic ping-pong stereo bounce, or push into Over-Feedback to create dense, self-building echoes that drift toward infinity. Stereo or Dual Mono Every section of Quantum Delay — delay, filter, and feedback — can switch between stereo and dual mono modes. Create tight, controlled stereo images or break them apart for wide, offset, unpredictable spaces. Dual mono modulation unlocks complex stereo interplay and beautifully asymmetric echoes. Modulation Without Limits Quantum Delay integrates our advanced modulation system, letting you modulate nearly anything: delay time, filters, feedback parameters, stereo controls, and more. Use LFOs, Random Generators, 2D modulators, Envelope Followers, Macros, and even chaotic systems to push your echoes far beyond traditional delay behavior. Or use our parameter randomisation feature to explore the plugin’s sound at random. Quantum Delay is an AUv3 audio effect plugin compatible with Logic Pro, AUM, Cubasis, GarageBand and many more. A Desktop version is also available for Windows and macOS (VST3 / AU / AAX). More information here: https://gs-dsp.com/products

Screenshots

Beatly Pro4 screens
GSDSP Quantum Delay3 screens

Verdict

The call

The clearest difference is price: Beatly Pro at $4.99 against GSDSP Quantum Delay's $14.99. GSDSP Quantum Delay's advantage is in-app purchases (none vs 2) and rating (4.8 vs 4.5). On ratings volume, 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

Beatly Pro costs $4.99 and GSDSP Quantum Delay $14.99 up front. Beatly Pro sells 2 one-off in-app purchases. GSDSP Quantum Delay asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

GSDSP Quantum Delay holds the better App Store score, 4.8 against 4.5. Both are backed by a comparable volume of ratings — 37 and 17 respectively. Written reviews point the same way: 82% of Beatly Pro's written reviews are positive against 100% of GSDSP Quantum Delay's.

UpkeepUpdate frequency

Beatly Pro ships an update every 3 weeks, GSDSP Quantum Delay every 5 weeks. The most recent releases landed on October 11, 2026 and October 9, 2026 respectively.

Scorecard6 real differences · 4 level
Beatly Pro versus GSDSP Quantum Delay: the parameters behind the verdict, then further details
ParameterBeatly ProGSDSP Quantum Delay
Price$4.99 — better$14.99
Rating4.5 (37 ratings)4.8 (17 ratings) — better
Positive reviews82.1% of reviews100.0% of reviews — better
Number of ratings37 — better17
Update frequencyEvery 3 weeks — betterEvery 5 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.612.0 — better
Further details — not scored
Size80 MB94 MB
Age rating4+4+
DeveloperAntonin CharvatGustav Scholda

Customer experience

Beatly Pro

All ratings37 ratings
Positive89.2%
Neutral2.7%
Negative8.1%
Written reviews28 reviews
Positive82.1%
Neutral7.1%
Negative10.7%

GSDSP Quantum Delay

All ratings17 ratings
Positive94.1%
Neutral0.0%
Negative5.9%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Beatly Pro

One-time2
  • Small tip$1.99
  • Large tip$3.99
None

GSDSP Quantum Delay

No in-app purchases

Questions

Is Beatly Pro free?
Beatly Pro costs $4.99, and also offers in-app purchases.
Is GSDSP Quantum Delay free?
GSDSP Quantum Delay costs $14.99, with no in-app purchases.
Which has better reviews, Beatly Pro or GSDSP Quantum Delay?
GSDSP Quantum Delay is rated higher. Beatly Pro averages 4.5 out of 5 from 37 ratings, while GSDSP Quantum Delay averages 4.8 from 17 ratings.
Do Beatly Pro or GSDSP Quantum Delay have ads?
Neither Beatly Pro nor GSDSP Quantum Delay shows ads.
Which is updated more often, Beatly Pro or GSDSP Quantum Delay?
Beatly Pro ships an update every 3 weeks, and GSDSP Quantum Delay every 5 weeks. Most recently, Beatly Pro was updated on October 11, 2026 and GSDSP Quantum Delay on October 9, 2026.

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