Kleverb vs BLEASS Phaser
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kleverb
This app offers a high-quality algorithmic reverb effect with an intuitive interface. It allows for detailed simulation of various room acoustics and includes features like modulation and a ducker for precise sound shaping. Suitable for diverse musical genres.
- Algorithmic reverb effect
- Room size selection (SMALL, MEDIUM, LARGE)
- Selectable filters on reflections
- Wet signal modulation
- Damping and diffusion parameters
- Integrated ducker with sidechain
- Standalone app and AUv3 plugin
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Kleverb is a high quality algorithmic reverb effect. An intuitive UI combined with a carefully calibrated network of filters and delays makes this a powerful effect useful in any context; all from acoustic jazz to EDM. With three different room size setups (SMALL, MEDIUM, LARGE), selectable filter on both early and late reflections, modulation, damping, diffusion and much more (see below) almost any kind of room can be simulated. There’s also a ducker included that uses the dry signal as sidechain. Very useful to keep vocals or other solo instruments distinct even when they’re soaking wet. The 64 factory presets covers most of the Kleverb features. Features: • Room size selection. • Filters with selectable type on both early and late reflections. • Wet signal modulation. • Damping filter. • Diffusion and Stereo Spread parameters. • Decay time between 0 and 25 seconds. • Pre delay parameter. • Ducker (compressor), with dry signal as sidechain. • Early / Late signal mix parameter. • Wet and Dry signal level parameters. Full documentation available inside the app or at https://klevgrand.se/download/kleverb-docs/ Kleverb works both as a standalone app and as an AUv3 plugin. Feedback or suggestions? Drop us a line at support(at)klevgrand.se or @klevgrand on Twitter
BLEASS Phaser
This versatile audio effect plugin injects unique character into guitar, keyboard, vocal, and bass sounds. It offers a wide range of phasing effects, from subtle movement to atmospheric soundscapes, with an intuitive visual interface.
- Versatile phasing effect
- Subtle movement to atmospheric soundscapes
- Intuitive visualizer
- Two LFO modulation sources
- Tactile interface design
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More subtle than flanging and more colourful than chorus, phasing has long been a go-to effect for guitarists, keyboardists, vocalists and bassists who want to inject a touch of other-worldly character into their sound. No effects collection is complete without a phaser! BLEASS Phaser delivers a comprehensive and highly versatile phasing effect. Whether you’re looking for gentle movement, resonant swirls, or stunning atmospheric soundscapes, BLEASS Phaser can do it all. The plugin’s interface is dominated by a colourful and captivating visualisation that illustrates the notch frequencies that create the phasing effect. This detailed and intuitive display, coupled with BLEASS’ trademark tactile interface design, demystifies the entire phasing process, and makes working with BLEASS Phaser a joy. Phasers use all-pass filters to create frequency-specific phase changes within a sound. When this sound is overlaid on the original unprocessed sound, it creates notch filters at the cutoff frequencies of the all-pass filters. By using multiple all-pass filters, with frequencies that spread from a “centre” frequency determined by the first all-pass filter, a complex comb filtering effect is generated. Adding modulation to the filter frequencies leads to the characteristic sweeping, whooshing sound that phasing is known for. BLEASS Phaser has two LFO modulation sources. The first modulates the notch filter cutoff frequencies, the second modulates the spread of notch frequencies around the initial centre frequency. This allows the plugin to create classic repetitive phasing effects, as well as complex, ever-shifting notch patterns that add tons of sonic interest to a part. With BLEASS Phaser in your collection, you will never need another phaser! More information on bleass.com/phaser
Screenshots
Verdict
The clearest difference is price: BLEASS Phaser at $6.99 against Kleverb's $19.99. BLEASS Phaser also leads on rating (5.0 vs 4.8) and review sentiment (100% vs 88%). Kleverb's advantage is update cadence (every 4 months vs every 21 months). On ratings volume, ads, in-app purchases and monetization model 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
Kleverb costs $19.99 and BLEASS Phaser $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.
BLEASS Phaser holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 13 and 11 respectively. Written reviews point the same way: 88% of Kleverb's written reviews are positive against 100% of BLEASS Phaser's.
Kleverb ships an update every 4 months, BLEASS Phaser every 21 months. The most recent releases landed on September 23, 2026 and October 11, 2026 respectively.
| Parameter | Kleverb | BLEASS Phaser |
|---|---|---|
| Price | $19.99 | $6.99 — better |
| Rating | 4.8 (13 ratings) | 5.0 (11 ratings) — better |
| Positive reviews | 87.5% of reviews | 100.0% of reviews — better |
| Number of ratings | 13 — better | 11 |
| Update frequency | Every 4 months — better | Every 21 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 22 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Klevgrand Produkter AB | BLEASS |
Customer experience
Kleverb
BLEASS Phaser
In-app purchases
Kleverb
No in-app purchases
BLEASS Phaser
No in-app purchases









