# BiasCalculator

> Tube amplifier bias calculation tool supporting numerous tube types and amp classes. (iPhone/iPad app by Kent-Remi Gabrielsen.)

- Source: https://appshunter.io/ios/app/biascalculator/id550932476 (this page in markdown: same URL + `.md`)
- Developer: [Kent-Remi Gabrielsen](https://appshunter.io/developer/547892801)
- Category: Utilities
- Price: $0.99
- Rating: 4.00/5 from 1 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 5.1 · 0 MB
- Languages: English
- Released: 2012-08-13
- Data updated: 2026-06-25
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/biascalculator/id550932476/reviews.md

## What is BiasCalculator?

Tool for calculating bias for tube amps.

Supports the following tube types:
EL84, 6K6GT, 6V6, 6V6GTA, 6L6, 6L6GC, 6L6WGB, 5881, EL34, 5763, 7189, 7591, KT66, KT88, 7027, 6CA7, 6BQ5 

Amp Class AB = 70%
Amp Class A = 90%

## Key features

- Tube bias calculation
- Support for numerous tube types
- Class A bias presets
- Class AB bias presets

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/biascalculator/id550932476/reviews.md

### 4/5 — Works great

*2012-08-24*

After the bug fixes, it works as it should. Should be a handy tool.

### 1/5 — Only EL34 option

*2012-08-21*

When you try to select another tube type you are taken to an empty screen. When you select cancel, the app crashes. Great idea, though.

## Frequently asked questions about BiasCalculator

### What is BiasCalculator used for?

BiasCalculator is a tool designed to help users calculate the correct bias settings for their tube amplifiers. It supports a comprehensive list of tube types and provides common bias percentages for Class A and Class AB amplifier configurations.

### How much does BiasCalculator cost?

BiasCalculator is a paid application, available for a one-time purchase of $0.99. This grants you full access to its features without any recurring fees.

### What tube types does BiasCalculator support?

BiasCalculator supports a wide array of tube types, including EL84, 6K6GT, 6V6, 6V6GTA, 6L6, 6L6GC, 6L6WGB, 5881, EL34, 5763, 7189, 7591, KT66, KT88, 7027, 6CA7, and 6BQ5.

### Does BiasCalculator have different bias settings for amplifier classes?

Yes, BiasCalculator offers specific bias percentages for different amplifier classes. It includes a setting for Amp Class AB at 70% and Amp Class A at 90%.

### What devices is BiasCalculator available on?

BiasCalculator is available on mobile devices. It has an age rating of 4+, indicating it is suitable for a broad audience.

### How often is BiasCalculator updated?

BiasCalculator was last updated on August 22, 2012, to version 1.1. The initial release date was August 13, 2012.

### What is the user rating for BiasCalculator?

BiasCalculator has a rating of 4.0 stars, based on a single review. This indicates a generally positive reception from its users.

### Does BiasCalculator have ads?

Based on the provided information, there is no indication that BiasCalculator contains advertisements. It is a paid application, suggesting a focus on user experience without ad interruptions.

## Version history (last 1 release)

### 1.1 — 2012-08-22

Bugfixes

## More apps by Kent-Remi Gabrielsen

- [Hopenkamera](https://appshunter.io/ios/app/hopenkamera/id547892798)

All apps by Kent-Remi Gabrielsen: https://appshunter.io/developer/547892801

## Related topics

[biascalculator](https://appshunter.io/ios/topics/biascalculator) · [bias room](https://appshunter.io/ios/topics/bias-room)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-25.*