Our method
Beta testing, built as a system.
Delta Testing is the method we created after years of watching every company invent beta testing from scratch. It turns testing with real people into loops you can plan, run, and measure, release after release.

Why it exists
Beta testing was an idea, not a system.
Everyone started from scratch
Every team ran its beta test its own way, so results were hard to trust, hard to repeat, and hard to compare.
Products got harder
Today’s products are more complex and more connected, and they depend on homes, networks, and devices you can’t control.
Releases never stop
Products ship updates all the time now. A test that happens once before launch can’t keep up.
People expect more
Your audience has less patience and more choice. You need to know how a product lands before they do.
How it works
Three loops, one inside the other.
1 · Phase loop
The test runs in phases
Each phase has its dates, its goal, and the testers who fit it. What you learn in one shapes the next.
2 · Feature loop
Each phase covers a set of features
Every feature gets an activity: plain instructions for what to try, so people use it the way they would at home.
3 · Feedback loop
Each feature earns feedback
People tell you what they found in three kinds, and every piece gets an Impact Score from how serious it is and how many people agree.
Issues
Something is broken or gets in the way.
Ideas
Something that would make it better.
Praise
Something people love, so you keep it.
What you measure
Know where you stand at a glance, for every feature.
Impact Score
Ranks every issue, idea, and praise by how serious it is and how many people share it, so the right things rise to the top.
Delta Health
How engaged your testers are: are they doing the activities and telling you enough to act on?
Delta Success
How your product is doing in testers’ eyes, weighing what they love against what gets in their way.
Delta Impact
How much better the product got, as you fix the issues and build the ideas people gave you.
In the Centercode Platform, all three Delta scores sit at the top of every project’s dashboard. Delta Success shows as a range until Delta Health reaches A+.
- Delta Health
- A-
- Delta Success
- 73-83
- Delta Impact
- 8%
- How engaged your testers are.
- How it is doing in testers’ eyes.
- How much better your fixes made it.
The difference
More of your testers, taking part.
- Testers engaged in a typical Delta Test
- 90%+
- Testers engaged in a typical beta test
- 20–30%
- Faster test cycles
- 50%
- Less time spent managing tests
- 40%
One method, many uses
It works at every stage of a product.
Before launch
Beta tests, field tests, and user acceptance tests with people from your target market, for a launch that lands.
After launch
Early access and customer advisory boards with the customers you already have, for every version after the first.
Inside your company
Employee testing, so your own people use what you build before your customers do.
Against the competition
Real customers of other products tell you where yours could win, to shape what you build next.
Where it runs
Run it yourself, or let us run it.

Beta testing
Centercode Platform
Delta Testing is built into the platform: the loops, the scores, and the reports.

Done for you
Managed tests
Our team runs Delta Tests for you, from planning and recruiting to reporting.

Product validation
UserVolley
Our newest platform carries the same method into everything it runs.
Start hereLet’s talk about what you’re building.
Tell us what you’re working on and we’ll show you the fastest way to get it in front of the right people.
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