Calculate bias for tube amplifiers with support for a wide range of tube types. Offers preset bias percentages for Class A and Class AB amplifiers.
BiasCalculator by Kent-Remi Gabrielsen


250+ iOS apps curated and reviewed
Finding the right biascalculator apps can be overwhelming with so many options. We've analyzed 250+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | $0.99 | 4.0★ (1) | — | No | May 2026 | ||
| 2 | Free | 4.7★ (61K) | No | No | Sep 2026 | ||
| 3 | Free | 4.7★ (15K) | Yes | Yes | Sep 2026 | ||
| 4 | Free | 4.8★ (3.6K) | No | No | Sep 2026 | ||
| 5 | $12.99 | 3.8★ (1.6K) | No | No | Aug 2026 | ||
| 6 | Free | 4.8★ (1.9K) | Yes | No | Sep 2026 | ||
| 7 | Free | 4.6★ (6.2K) | Yes | Yes | Sep 2026 | ||
| 8 | Free | 4.4★ (277) | Yes | No | Aug 2026 |


Calculate bias for tube amplifiers with support for a wide range of tube types. Offers preset bias percentages for Class A and Class AB amplifiers.




This app offers both basic and scientific calculation modes with over 30 scientific operations. It allows for customization of the app's appearance and includes features for note-taking, drawing, and viewing calculation history. It supports high accuracy calculations and nested parentheses.




A straightforward and intuitive calculator app designed for ease of use. It offers a history bar, customizable themes, and advanced mathematical functions, ensuring a pleasant and efficient calculation experience on your device.