Spatializer vs Pulsar
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Spatializer
Enhance audio with stereo widening that preserves mono compatibility and avoids phase issues. This tool synthesizes side channel information, ideal for mono sources or adding depth to existing stereo tracks without compromising the mid channel.
- Stereo widening without phase smearing
- Synthesizes side channel information
- Preserves mid channel integrity
- Flexible for mono and stereo sources
- Transparent or strong effect options
- Multiband transient shapers
- Directional RMS distribution visualization
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Spatializer is a great choice if you want to widen your sounds but need to avoid: • phase smearing in the mono mix • phasing / comb filter effects (from asymmetric channel delays) • or any changes to the mid channel or mono mix The plugin's main focus is to enhance sounds that have little or no side channel information, where traditional widening approaches like mid-side processing can't be effectively used. It also offers more flexibility in case of mixed inputs, widening narrow components without boosting already existing stereo width to extreme levels that would drown out the mid channel, leading to stereo image problems. Spatializer can also be combined with other effects, for example it's excellent for augmenting large-scale reverbs by enhancing the more immediate space or effectively moving the listener closer to the virtual sound source. At large timescales, the plugin takes on some of the qualities of a reverb itself, while keeping the mid channel sharp and free of any reflections. This could either be used as a special effect in and of itself (depending on the transient characteristics of the input), or be blended together with traditional ambience or acoustic space simulation effects. FEATURES: • Synthesis of side channel information where there was none (stereoization of mono sources) • Linear phase mid channel • Capability to deliver both a neutral / transparent response as well as stronger effects • Built-in multiband transient shapers for delivering a more focused response by suppressing outlier reflections • Multiple visualization options: Directional RMS distribution, position and motion • Effects can range from close-proximity / spatial audio effects to larger acoustic space reflections • Baseline frequency response is optimized to maximize flatness, balancing the spectral density of Left, Right, Side channels The built-in selection of subtly tuned presets and the combined psychoacoustic properties of the above features give more leeway to easily experiment with kinds of source material that have traditionally presented difficulties, like tracks with prominent LF content. Due to its ability to provide transparent, subtle and high-clarity responses, as well as good spectral density characteristics, Spatializer can also be included in master bus effects chains. In multi-track setups it can be used in parallel with other positioning methods to bring more variation to the sound stage or to provide additional ways to adjust the mix. For audio demos, visit: www.quantovox.com/sp PLEASE NOTE: • AUv3-compatible host application required • Supported sampling rates: 22.05, 44.1, 48, 96 kHz.
Pulsar
This music app provides a virtual drum machine with 8 pads for improvising and playing along to built-in rhythm presets. It features real-time rhythm switching, tempo control, and various effects. It also supports Ableton Link and MIDI for seamless integration with other music software and hardware.
- 8-pad drum machine
- Built-in rhythm presets
- Real-time rhythm switching
- Tempo and accent control
- Drive, reverb, and filter effects
- Ableton Link synchronization
- MIDI In/Out support
- AUv3 compatibility
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Make beats anywhere with Pulsar-ES, an authentic preset drum machine expanded into a mobile groovebox for iPhone and iPad. Inspired by the rare Soviet/Ukrainian PULSAR hardware, Pulsar-ES keeps the original industrial rhythm-box character while adding the missing modern features producers expect: MIDI editing, deeper FX, Ableton Link sync, AUv3 workflow, and mobile project control. Play ideas fast on the 4x2 drum pad grid, then turn them into full patterns with the MIDI Clip Editor. Draw, move, and resize notes directly on the grid so your rhythm stays editable after the first take. Shape your sound with a hands-on FX rack built for quick decisions: - Filter with low-pass, band-pass, high-pass, and notch modes - Reverb with room, hall, and plate spaces - Overdrive with overdrive, distortion, fuzz, and tube modes - Delay with digital, tape, and ping-pong modes - Chorus and compressor for extra movement and control Pulsar-ES also supports Ableton Link sync, project save/load, rhythm presets, and a portrait layout designed for making music on the go. Start a beat, edit every note, shape it with FX, and keep your ideas moving.
Screenshots
Verdict
The clearest difference is rating: Spatializer at 4.8 against Pulsar's 4.3. Spatializer also leads on review sentiment (91% vs 67%) and ratings volume (27 vs 7). Pulsar's advantage is price ($4.99 vs $9.99) and update cadence (every 3 weeks vs every 2 months). On ads, in-app purchases, 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
Spatializer costs $9.99 and Pulsar $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Spatializer holds the better App Store score, 4.8 against 4.3. Both are backed by a comparable volume of ratings — 27 and 7 respectively. Written reviews point the same way: 91% of Spatializer's written reviews are positive against 67% of Pulsar's.
Spatializer ships an update every 2 months, Pulsar every 3 weeks. The most recent releases landed on September 15, 2026 and September 18, 2026 respectively.
| Parameter | Spatializer | Pulsar |
|---|---|---|
| Price | $9.99 | $4.99 — better |
| Rating | 4.8 (27 ratings) — better | 4.3 (7 ratings) |
| Positive reviews | 90.9% of reviews — better | 66.7% of reviews |
| Number of ratings | 27 — better | 7 |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | — | #188 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.1 — better | 13.0 |
| Further details — not scored | ||
| Size | 13 MB | 61 MB |
| Age rating | 4+ | 4+ |
| Developer | quantovox | Dmytro Kiro |
Customer experience
Spatializer
Pulsar
In-app purchases
Spatializer
No in-app purchases
Pulsar
No in-app purchases









