# Kleverb vs TB DualVCF

The clearest difference is price: TB DualVCF at $4.99 against Kleverb's $19.99. TB DualVCF also leads on update cadence (every 2 months vs every 4 months) and device support (3 vs 1). On rating, review sentiment, ratings volume and ads there is nothing between them.

Kleverb costs $19.99 and TB DualVCF $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

TB DualVCF holds the better App Store score, 4.9 against 4.8. Both are backed by a comparable volume of ratings — 13 and 18 respectively. Written reviews complicate that: 88% of Kleverb's written reviews are positive against 80% of TB DualVCF's, so the app with the better star average is not the one people write more warmly about.

Kleverb ships an update every 4 months, TB DualVCF every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Kleverb | TB DualVCF |
| --- | --- | --- |
| Price | $19.99 | **$4.99** |
| Rating | [4.8 (13 ratings)](https://appshunter.io/ios/app/kleverb/id1438836422/reviews) | **[4.9 (18 ratings)](https://appshunter.io/ios/app/tb-dualvcf/id1505169270/reviews)** |
| Number of ratings | 13 | **18** |
| Positive reviews | **87.5% of reviews** | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Paid | Paid |
| Size | 22 MB | 12 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Klevgrand Produkter AB](https://appshunter.io/developer/1118902192) | [ToneBoosters](https://appshunter.io/developer/1472446500) |

## What reviewers say

### Kleverb

[App page](https://appshunter.io/ios/app/kleverb/id1438836422)

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.

**Highlights:** 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

**In-app purchases:** none


### TB DualVCF

[App page](https://appshunter.io/ios/app/tb-dualvcf/id1505169270)

This app offers a dual analog filter plug-in for music production, providing a wide range of vintage filter models to shape sound. It features intuitive modulation and envelope followers for creative audio exploration, compatible with AUv3 hosts.

**Highlights:** Dual analog filter sections, Dozens of vintage filter models, Envelope followers, Intuitive modulation editor, AUv3 plug-in compatibility, Real-time audio processing

**In-app purchases:** none


## Frequently asked questions

### Is Kleverb free?

Kleverb costs $19.99, with no in-app purchases.

### Is TB DualVCF free?

TB DualVCF costs $4.99, with no in-app purchases.

### Which has better reviews, Kleverb or TB DualVCF?

TB DualVCF is rated higher. Kleverb averages 4.8 out of 5 from 13 ratings, while TB DualVCF averages 4.9 from 18 ratings.

### Do Kleverb or TB DualVCF have ads?

Neither Kleverb nor TB DualVCF shows ads.

### Which is updated more often, Kleverb or TB DualVCF?

Kleverb ships an update every 4 months, and TB DualVCF every 2 months. Most recently, Kleverb was updated on November 2, 2026 and TB DualVCF on November 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*