# Dub Filter vs Gradatone

The clearest difference is price: Gradatone at Free against Dub Filter's $14.99. Gradatone also leads on update cadence (every 5 months vs every 15 months). Dub Filter's advantage is iOS requirement (12.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

Gradatone is free to download; Dub Filter costs $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Dub Filter ships an update every 15 months, Gradatone every 5 months. The most recent releases landed on October 16, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Dub Filter | Gradatone |
| --- | --- | --- |
| Price | $14.99 | **Free** |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/dub-filter-high-pass/id6478895441/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 5 months** |
| Monetization | Paid | — |
| Size | 21 MB | 6 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AudioThing Ltd.](https://appshunter.io/developer/1659941236) | [TOMIHIDE OTA](https://appshunter.io/developer/1796389332) |

## What reviewers say

### Dub Filter

[App page](https://appshunter.io/ios/app/dub-filter-high-pass/id6478895441)

This audio plugin emulates a legendary vintage high-pass filter, offering eleven frequency steps and controls for resonance, magnetism, character, dynamics, and artifacts. It includes LFO and Envelope Follower modulation sources for creative sound design.

**Highlights:** Vintage high-pass filter emulation, Eleven frequency steps, Adjustable resonance, Magnetism, Character, Dynamics, Artifacts controls, LFO modulation, Envelope Follower modulation, Standalone and AUv3 formats

**Features:** Vision Pro support

**In-app purchases:** none


### Gradatone

[App page](https://appshunter.io/ios/app/gradatone/id6772448588)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Dub Filter free?

Dub Filter costs $14.99, with no in-app purchases.

### Is Gradatone free?

Gradatone is free to download, with no in-app purchases.

### Do Dub Filter or Gradatone have ads?

Neither Dub Filter nor Gradatone shows ads.

### Which is updated more often, Dub Filter or Gradatone?

Dub Filter ships an update every 15 months, and Gradatone every 5 months. Most recently, Dub Filter was updated on October 16, 2026 and Gradatone on October 28, 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.*