ADverb2 vs Kleverb
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ADverb2
This app emulates a vintage digital plate reverb unit from the 80s, offering a range of reverb effects from short and rich to long and ambient. It functions as a standalone effect, with Inter-App Audio, or as an AUv3 plugin for music production hosts.
- Vintage digital plate reverb emulation
- Adjustable pre-delay, time, and size
- Extensive filtering for reverb tail shaping
- Logical vintage-style user interface
- Cross-platform preset manager
- Low CPU load optimized algorithm
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ADverb2 is our love letter to the golden age of studio reverb: a small handful of controls, a big friendly panel, and a sound that flatters everything you run through it. Version 2.3 grows it from one algorithm into three. PLATE is the original ADverb algorithm, a classic digital plate with the fast build-up and silky decay that made these boxes famous. It remains untouched, and your old presets load exactly as before. AMBIENCE is a modern, airy space. It adds air and dimension around a source without an obvious tail at short settings, and blooms into a long, weightless wash when you push the time out. Time-varying early energy keeps it from ever sounding static. HALL is a large concert space, exceptionally smooth and very wide, with slow internal motion that keeps long decays lush instead of metallic. All three algorithms share the same simple control set: Pre-Delay, Reverb Time, Size, low and high Contour switches, Rolloff, and Diffusion, plus input level and output mix. The Input Mute and Reverb Stop kill switches let you perform with the reverb, choking the send or the tail on the beat. Mix Lock keeps your wet/dry setting pinned while you audition presets, ideal when ADverb2 sits on a send. Version 2.3 also brings our system-wide preset browser with folders and favorites, a hundred factory presets covering everything from drum plates to nine-second ambient washes, preset stepping right from the main panel, and presets that show up in your host's own preset menu. ADverb2 is an AUv3 Audio Unit and runs in any AUv3 host, including GarageBand and Logic Pro. The interface is fully resizable and scales to fit your device. No accounts, no ads, no in-app purchases.
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
Screenshots
Verdict
The clearest difference is price: ADverb2 at $4.99 against Kleverb's $19.99. ADverb2 also leads on chart position (#192 vs unranked). Kleverb's advantage is update cadence (every 4 months vs every 50 months) and iOS requirement (13.0 vs 16.0). On rating, review sentiment, ratings volume 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
ADverb2 costs $4.99 and Kleverb $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.6 for ADverb2 against 4.8 for Kleverb. Both are backed by a comparable volume of ratings — 19 and 13 respectively. Written reviews are what separate them: 80% of ADverb2's written reviews are positive against 88% of Kleverb's.
ADverb2 ships an update every 50 months, Kleverb every 4 months. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.
| Parameter | ADverb2 | Kleverb |
|---|---|---|
| Price | $4.99 — better | $19.99 |
| Rating | 4.6 (19 ratings) | 4.8 (13 ratings) — better |
| Positive reviews | 80.0% of reviews | 87.5% of reviews — better |
| Number of ratings | 19 — better | 13 |
| Update frequency | Every 50 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | #192 — better | — |
| Devices | iPhone, iPad — better | iPad |
| Requires iOS | 16.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 27 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Audio Damage, Inc. | Klevgrand Produkter AB |
Customer experience
ADverb2
Kleverb
In-app purchases
ADverb2
No in-app purchases
Kleverb
No in-app purchases








