Tempo Counter vs Spatializer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tempo Counter
This application helps musicians and composers determine and adjust the tempo of music. It provides real-time feedback on average and last beat tempos, aiding in composition and analysis.
- Real-time tempo detection
- Average tempo display
- Last beat tempo display
- Tempo adjustment assistance
- Music composition aid
Read full descriptionHide full description
When you want to fix the tempo sensibly while compose music... When you want to know the tempo of music now playing... Then with this app, you can know the tempo of music immediately. After tapping "start button", the average tempo will be displayed in "average tempo frame" by tapping "note button" at every 1 beat. The tempo about last 1 beat will be displayed in "last lap frame".
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
Read full descriptionHide full description
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.
Screenshots
Verdict
The clearest difference is review sentiment: Spatializer at 91% against Tempo Counter's 33%. Spatializer also leads on rating (4.8 vs 1.0) and in-app purchases (none vs 1). Tempo Counter's advantage is price ($0.99 vs $9.99) and iOS requirement (8.0 vs 12.1). On 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
Tempo Counter costs $0.99 and Spatializer $9.99 up front. Tempo Counter sells 1 one-off in-app purchase. Spatializer asks for nothing beyond the download.
Spatializer holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: Spatializer has 27 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 33% of Tempo Counter's written reviews are positive against 91% of Spatializer's.
Tempo Counter ships an update every 7 months, Spatializer every 2 months. The most recent releases landed on September 14, 2026 and September 15, 2026 respectively.
| Parameter | Tempo Counter | Spatializer |
|---|---|---|
| Price | $0.99 — better | $9.99 |
| Rating | 1.0 (2 ratings) | 4.8 (27 ratings) — better |
| Positive reviews | 33.3% of reviews | 90.9% of reviews — better |
| Number of ratings | 2 | 27 — better |
| Update frequency | Every 7 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | Paid |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 12.1 |
| Further details — not scored | ||
| Size | 5 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | y-design | quantovox |
Customer experience
Tempo Counter
Spatializer
In-app purchases
Tempo Counter
- Full Version$0.99
Spatializer
No in-app purchases









