Android · Specialist valve amp toolkit

Valve Bias Pro

Bias calculations, valve references, amplifier data, multi-valve comparison and saved workshop jobs in one dedicated Android app.

£3.99one-time Lifetime Pro unlock
Request Android Access View shop listing
Free appNo subscriptionAndroid testingWorkshop focused
More than a bias calculator

Built for real amplifier work.

Valve Bias Pro brings the calculations and reference information technicians repeatedly need into one place.

1

Bias calculator

Work from plate voltage, current and valve rating to calculate target current and dissipation.

2

Multi-valve monitor

Compare multiple output valves together and spot current spread or matching differences quickly.

3

Valve library

Reference around 50 valve profiles without having to search separate notes or websites.

4

Amplifier library

Keep useful reference information for around 18 amplifier profiles close to the calculator.

5

Saved jobs

Keep measurements, notes and job information together for repeat servicing and workshop records.

6

Workshop guidance

Measurement notes, practical references and safety reminders are available alongside the tools.

Simple pricing

No monthly subscription.

Free

£0
  • Install the app
  • Core tools and access
  • Try the workflow before upgrading

Lifetime Pro

£3.99
  • One payment
  • Lifetime Pro unlock
  • No recurring subscription
  • Designed for regular workshop use
Request Android Access
Current availability: Valve Bias Pro is in Android testing ahead of its wider Google Play release. The public product page is live now so testers and early users can see the launch pricing and features. When the public Play listing is available, the purchase/access buttons will be updated to point directly to Google Play.
Questions

Before you use it.

Is Valve Bias Pro a subscription?

No. The current launch model is a free app with a £3.99 one-time Lifetime Pro unlock.

Is the Android app publicly released yet?

It is currently in Android testing. Wider Google Play availability is planned once testing is complete.

Does this replace safe servicing knowledge?

No. Valve amplifiers can contain lethal voltages even when unplugged. The app is intended for people who understand safe high-voltage servicing procedures.

Can I use the free web calculators instead?

Yes. The free calculators remain available at Electronic Repairs UK Free Tools. Valve Bias Pro is for users who want the dedicated app, libraries, saved jobs and broader workshop workflow.