Beatly Pro vs GSDSP Quantum Delay
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Beatly Pro
Create unique instrumental music with a generative studio. Shape melodies, arrange tracks, and mix with extensive editing and export tools. This app generates music from curated patterns, not AI prompts.
- Generate new musical ideas
- Arrange up to 8 bars of music
- Edit notes in a piano roll
- Mix with channel effects
- Import and edit samples
- Export MIDI and WAV formats
- Synchronize with Ableton Link
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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 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. There are no prompts, cloud generation, or trained AI models. Style-aware melodies follow the harmony and develop across the arrangement. Varied instrument levels and effects give each track its own balance and character. Beatly Pro takes you from the first 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 across up to 7 mixer channels • Edit notes in a piano roll with pinch-to-zoom, playhead following, undo, velocity, copy and paste, per-beat transposition, a chord-aware keyboard lock, and custom patterns • Build chord progressions and change the key or chord of individual beats • Regenerate one 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 • Browse, search, and audition built-in sounds in the Sample Manager • Record samples or import WAV and AIFF files individually, by folder, or with drag and drop • Trim, fade, normalize, reverse, tune, warm, and drive your samples • Import, audition, rename, and manage SF2 SoundFont banks • Save and recall reusable drum kits • Play tuned built-in instruments more naturally across the keyboard with multisample playback • Import a four-beat region from a MIDI file into the piano roll, with optional transposition • Export the complete track as MIDI or create separate MIDI files for each instrument • Render a WAV mix, individual stems, or a seamless loop of the active mix • Record a live performance to WAV • Share Beatly tracks with their custom samples included • Send MIDI with configurable channel assignments and drum-note mappings • Connect through Audiobus with the full audio mix and separate MIDI outputs for drums and each instrument group • Synchronize tempo and transport with Ableton Link WHO IS BEATLY PRO FOR? Beatly Pro is made for producers, composers, singers, artists, filmmakers, game developers, content creators, practicing musicians, and anyone curious about generative music. HOW DOES IT WORK? Open Beatly Pro and tap Play. The app chooses instruments, tempo, key, and musical patterns, then creates up to 8 bars, or 32 beats, of instrumental music. Tap Next whenever you want 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 edit notes in the piano roll. Choose from five styles: Default, Lo-fi, Chiptune, Cinematic, and Dance. Default suits rap-inspired beats. Each style has its own instruments and character. Define the harmony with the chord progression builder, or create custom bar patterns for future tracks. Change the key or chord of any beat, and Beatly will transpose its notes to match. When your track is ready, save or share it, export MIDI, record a performance, render a WAV mix, create stems, or export a seamless loop. Connect Beatly Pro to your studio through MIDI, Audiobus, or Ableton Link. CAN I USE MY OWN SOUNDS? Yes. Use the Sample Manager to record audio, import WAV or AIFF files and folders, or load SF2 SoundFont banks. Preview, search, rename, duplicate, and edit samples without leaving the app. Samples tuned to C usually give 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.
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.
- 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)
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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
Verdict
The clearest difference is price: Beatly Pro at $4.99 against GSDSP Quantum Delay's $14.99. Beatly Pro also leads on update cadence (every 2 weeks vs every 6 weeks). GSDSP Quantum Delay's advantage is in-app purchases (none vs 2) and rating (4.8 vs 4.5). On ratings volume, ads, monetization model 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
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.
GSDSP Quantum Delay holds the better App Store score, 4.8 against 4.5. Both are backed by a comparable volume of ratings — 38 and 17 respectively. Written reviews point the same way: 83% of Beatly Pro's written reviews are positive against 100% of GSDSP Quantum Delay's.
Beatly Pro ships an update every 2 weeks, GSDSP Quantum Delay every 6 weeks. Both last shipped on November 3, 2026.
| Parameter | Beatly Pro | GSDSP Quantum Delay |
|---|---|---|
| Price | $4.99 — better | $14.99 |
| Rating | 4.5 (38 ratings) | 4.8 (17 ratings) — better |
| Positive reviews | 82.8% of reviews | 100.0% of reviews — better |
| Number of ratings | 38 — better | 17 |
| Update frequency | Every 2 weeks — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 204 MB | 94 MB |
| Age rating | 4+ | 4+ |
| Developer | Antonin Charvat | Gustav Scholda |
Customer experience
Beatly Pro
GSDSP Quantum Delay
In-app purchases
Beatly Pro
- Small tip$1.99
- Large tip$3.99
GSDSP Quantum Delay
No in-app purchases
Questions
Is Beatly Pro free?
Is GSDSP Quantum Delay free?
Which has better reviews, Beatly Pro or GSDSP Quantum Delay?
Do Beatly Pro or GSDSP Quantum Delay have ads?
Which is updated more often, Beatly Pro or GSDSP Quantum Delay?
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