Agonizer vs BeatSeq
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Agonizer
This app is a monophonic synthesizer focused on bass sounds, developed with a synth bass expert. It features dual wavetable oscillators, a mangle section, and built-in stereo effects. It supports MPE controllers and various audio/MIDI connectivity options for standalone or app-to-app use.
- Monophonic synth engine for bass
- Dual wavetable oscillators
- Built-in stereo effects
- MPE controller support
- Standalone and AUv3 operation
- 140+ factory presets
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Agonizer is a monophonic synthesizer designed in collaboration with YouTuber and synth bass expert Jakob Haq of haQ attaQ Overview: * Monophonic Synth Engine with focus on Bass * Built-in stereo effects * 140+ fine tuned factory presets designed by Jakob Haq * Supports ROLI Seaboard and other MPE controllers out of the box * Standalone operation with support for USB audio interfaces, wired, network & bluetooth MIDI * Audio Unit v3 Extension * Inter App Audio support * Audiobus support * Ableton Link Synth Voice: * Dual Wavetable Oscillators with 40+ Wavetables, Morphing & X-Mod * Dedicated sub osc & noise source * Mangle Section with pre-filter Drive, Bitcrush, Lift and Push controls * VA Ladder filter * Wobulator (Highly tweak-able Sequenced LFO) * LFO with Key and BPM Sync * Variable Slope AD & ADSR Envelopes * Tube based master drive Effects: * 2x stereo effect units * Vintage Chorus * Digital Delay Presets: * Factory bank including 140+ presets designed by Jakob Haq * Preset Management with Templates & Categories * Shared User Presets between Standalone and AUv3 versions * Preset Export & Import Connectivity: * Standalone * AUv3 Instrument * Inter-App Audio Instrument * Audiobus Instrument Requirements: * iOS12+ * iPad Air 2 or newer
BeatSeq
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BeatSeq is a 16-step drum sequencer for Apple Watch and iPhone. Build beats on your wrist. Edit on your phone. Export to your DAW. THE RADIAL SEQUENCER Your 16 steps wrap around the watch face. Tap any step to fire it. Turn the crown to set BPM. Swipe between 9 voices — kick, snare, hi-hat, tom, crash, clap, rim, bell, and sampler. PER-STEP CONTROL Hold any step to go deeper. Set ratchet (×2/×3/×4 sub-hit rolls), probability gate (100/75/50/25%), or accent — per step, per voice. 4 BANKS · SONG MODE Each drum gets 4 independent banks — A, B, C, D — each with its own pattern and length. Chain up to 8 banks in Song Mode to build a full arrangement. 7 GROOVE PACKS Jungle, house, garage, Euclidean, and more. Generate a full kit or drop individual voices in. Play it as-is or use it as a starting point. 9-VOICE MIXER Dial in volumes on the iPhone or straight from the watch. EXPORT WAV, stems, or MIDI. One tap, straight to your DAW. SYNC Build on your watch. Sync to iPhone. Export and go. Designed for beatmakers, producers, and anyone who wants to sketch ideas anywhere — then take them further.
Screenshots
Verdict
The clearest difference is price: BeatSeq at $2.99 against Agonizer's $19.99. BeatSeq also leads on in-app purchases (none vs 3) and update cadence (every 9 days vs every 5 months). Agonizer's advantage is iOS requirement (11.0 vs 15.0). On 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
Agonizer costs $19.99 and BeatSeq $2.99 up front. Agonizer sells 3 one-off in-app purchases. BeatSeq asks for nothing beyond the download.
Agonizer ships an update every 5 months, BeatSeq every 9 days. The most recent releases landed on October 18, 2026 and October 9, 2026 respectively.
| Parameter | Agonizer | BeatSeq |
|---|---|---|
| Price | $19.99 | $2.99 — better |
| Rating | 4.8 (203 ratings) — better | — |
| Positive reviews | 77.8% of reviews | — |
| Number of ratings | 203 — better | — |
| Update frequency | Every 5 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 362 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Kai Aras | Imran Azizuddin |
Bugs and requests
Agonizer
Reported bugs
16 issues- Keyboard does not properly handle legato/mono-synth note priority
- Crashes in Audiobus, AUM, and Cubasis host applications
- No sound output when used as AUv3 plugin in hosts
- No sound in GarageBand integration
- App freezes on splash screen with iOS 18.3
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- Stuck notes and failed note triggering
- Scream button malfunction when switching presets
- Cutoff knob lag in AUv3 scenarios
- UI jitter and text cutoff on iPhone
- Favorite preset feature not working on iPhone
- Program change not working properly in hosts
- Always opens with init preset in host applications
- Modulation matrix sensitivity too high (2% movement = large range)
- Audio output peaks in red with no sound
- Permanent clipping/damaged audio output
- Misleading IAP pricing display (showing 'FREE' for paid content)
Requested features
10 requests- Polyphony mode or toggle between mono and poly
- Envelope drawing capability instead of preset selection
- Menu-based waveform selection instead of cycling
- Arpeggiator function
- Preset browser search and favorites filter
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- Extended automation control for all knobs
- Keytracking for filter
- Reverb effect
- Accelerometer/gyroscopic velocity sensitivity
- Customizable number of keyboard keys
BeatSeq
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Agonizer
- Chrome Oasis Pack$3.99
- Circuit Bender Pack$3.99
- Neon Nightmare Pack$4.99
BeatSeq
No in-app purchases









