Arturia iSpark vs OB
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Arturia iSpark
Create complete music tracks with a versatile beat-making solution. Explore a vast library of drum kits and instruments, then sculpt your sound with powerful editing tools and a flexible sequencer. Design unique sonic textures and melodic elements for your compositions.
- Real-time pattern playing and tweaking
- 64-step flexible sequencer
- Modular engine with TAE® technology
- Extensive sound customization
- Song mode for chaining patterns
- XY modulation touchpads
- Compatibility with Spark environment
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iSpark is an all-inclusive beat-making solution allowing to create rich tracks from A to Z while experiencing an unequaled workflow. It includes a large variety of drum kits and individual instruments based on the most renowned drum machines and top-notch sound design. It is the result of a simple recipe, care for rhythm, innovation and uncompromising ergonomics combined with the personality of the greatest drum machines. What you can do with iSpark: iSpark allows you to play drum patterns in-real time and to tweak your sound on-the-fly. Its optimized and performance-oriented layout gives you a direct access to an extended range of sonic parameters. It also integrates a powerful and flexible 64-step sequencer enhancing your creative freedom and effectiveness. iSpark unites our multi-rewarded TAE® technology coupled with a modular engine and crystal-clear multi-layered samples. Beyond drum and percussive sounds, iSpark blasts the frontiers of beat-making through a range of singular sonic effects, warm analog synth textures and melodic elements. Details: Main screen The main screen is all about performance. Its layout, inspired by our SparkLE controller, gives you immediate access to a comprehensive set of fundamental controls and parameters. Its lower part allows you to play and record your drum patterns in real-time, step by step, to jump between your patterns and to set their length. Mixer In the mixer, you can adjust the volume and panorama of your instruments, set two individual effects for each of them, and modify the sending levels to the return effects. The VU meters help you to balance effectively your instruments. Studio The Studio is the iSpark laboratory of sound. This is where you will customize your kits and all the instruments that compose it. For each instrument, you can choose the samples that are used and adjust a comprehensive list of parameters. Sequencer In the sequencer screen, all the steps of your different instruments are right in front of you. You can thus create your sequences in a flash. Besides, the automation tool allows you drawing modulation curves with a simple glide of your fingertip. Song The Song mode gives you the possibility to chain your pattern in order to create a whole performance. Organizing your song is as easy as a drag-and-drop. Switch to “Perform” and discover two large XY modulation touchpads that will bring your songs to life. Connectivity: iSpark offers a total and seamless compatibility with the existing Spark environment. Maintain continuously your creative flow by transferring in a heartbeat your projects, patterns, your kits and individual instruments between Spark 2 and iSpark. Connect the dedicated SparkLE controller to iSpark and associate the flexibility of an app-based instrument to the effectiveness and comfort of hardware. The compatibility with AudioBus and Inter-App Audio offers a smooth integration of iSpark in you iPad-based setup. With iSpark, your mobile setup found its beat-making solution. Main features: Pristine quality sound engines including: TAE® analog synthesis, physical modeling, and multi-layered samples provided by our top-tier development partners · 640 Instruments / 40 kits - Classic drum machines - Electronic kits - Acoustic kits · Shuffle and shift modes to humanize grooves · Choke groups to mute instruments naturally · Song mode with 16 segments · Song segment triggering from hardware · Performance master effects: repeat, tape, reverse, strobe, pan, mix, bit crusher, 8-mode filter and Roller · 16-track mixer with high-quality effects: multiband compressor, bit crusher, multiband EQ, chorus, delay, reverb, distortion, phaser, plate reverb, destroyer, flanger, space pan, limiter, sub generator · Real-time automation on all parameters · Compatible with SparkLE controller · Ableton Link integration · Possibility to share projects, kits and instruments between iSpark and the desktop version of Spark 2.
OB
This app emulates the classic Oberheim OB-X synthesizer, offering its rich sound and behavior with added enhancements. It focuses on sonic quality and includes micro random detuning for authentic analog warmth. External effects are recommended to further shape its versatile soundscapes.
- Oberheim OB-X emulation
- Recreates original sound and behavior
- Added enhancements to original design
- Micro random detuning
- Rich and good sound quality
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OB-Xd is based on the Oberheim OB-X. It attempts to recreate its sound and behavior, but as the original was very limited in some important ways, a number of things were added or altered to the original design. OB-Xd was designed to sound as good and as rich as the original. It implements micro random detuning. Also, like many synths of the OB-X's generation, the OB-Xd has no internal effects so its sounds and textures can be greatly enhanced by the use of additional processing like chorus, reverb, delay, etc.
Screenshots
Verdict
The clearest difference is rating: OB at 4.4 against Arturia iSpark's 3.9. OB also leads on in-app purchases (none vs 14) and price ($14.99 vs $19.99). Arturia iSpark's advantage is iOS requirement (8.0 vs 15.0). On review sentiment, ratings volume, update cadence and ads 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
Arturia iSpark costs $19.99 and OB $14.99 up front. Arturia iSpark sells 13 one-off in-app purchases. OB asks for nothing beyond the download.
OB holds the better App Store score, 4.4 against 3.9. Both are backed by a comparable volume of ratings — 60 and 65 respectively. Written reviews point the same way: 50% of Arturia iSpark's written reviews are positive against 57% of OB's.
Arturia iSpark ships an update every 3 months, OB every 2 months. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.
| Parameter | Arturia iSpark | OB |
|---|---|---|
| Price | $19.99 | $14.99 — better |
| Rating | 3.9 (60 ratings) | 4.4 (65 ratings) — better |
| Positive reviews | 50.3% of reviews | 57.0% of reviews — better |
| Number of ratings | 60 | 65 — better |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 396 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Arturia | DiscoDSP LLC |
Customer experience
Arturia iSpark
OB
Bugs and requests
Arturia iSpark
Not enough reviews yet to summarise bugs or requests.
OB
Reported bugs
13 issues- Crashes in Audiobus
- Cannot use in MIDI section of Audiobus
- Preset browser issues (scrolling, cut off banks)
- Automation bug with cutoff freq
- UI issues on iPad Pro (buttons misaligned, text cut off)
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- App suspends on iOS 14
- No virtual keyboard in standalone app
- AUv3 crashes when adding second instance
- UI messed up in AU
- Knobs don't line up with display
- Wonky controls
- Programmer page without menu, cannot save/open patches
- LFOing filter cutoff jerky
Requested features
19 requests- Add last/high priority for mono patches
- Increase polyphony to 8 voices
- MIDI Learn functionality
- Preset browser improvements (categories, scrolling)
- Adjustable keyboard size
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- GUI scaling/layout redesign for iPhone
- Skins for GUI
- MIDI keyboard in standalone mode
- Effects
- Preset manager
- Zoom functionality for AUv3 on iPhone
- Fix knob turning bugs
- Add patch select in DAW apps
- GUI color scheme options
- Manual in settings
- Import presets
- Layering sounds (like original OBXa)
- White pinstripes on blue background (cosmetic)
- Mod wheel customization
In-app purchases
Arturia iSpark
- iSpark ALMA FragmentFree
- Techno Fragment2 variants$3.99
- Noise Fragment$3.99
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- EDM Fragment$3.99
- HipHop Fragment$3.99
- EDM Fragment 2$3.99
- Hip Hop Fragment 2$3.99
- Hip Hop Fragment 4$3.99
- Raw House Fragment 1$3.99
- Hip Hop Fragment 3$3.99
- EDM Fragment 3$3.99
- EDM Fragment 4$3.99
- Noise Fragment 3$3.99
OB
No in-app purchases








