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Do CTA copy A/B tests work in SaaS / Software?

Weak on both counts. CTA copy tests win 2% in SaaS / Software, below the 12% these tests manage across all industries and below the 9% that SaaS / Software manages across all change types. There is usually something better to spend a test slot on.

The strongest change type we can measure in SaaS / Software is Styling at 13% on 100+ tests.

Small winner set. Few of these tests cleared the bar. The 95% interval on that win rate runs 0% to 9%, so read the figure as directional.

The numbers

Won 2% No measurable change 88% Lost 11%
SaaS / Softwareall industries
Tests analysed50+250+
Beat control2%12%
No measurable difference88%
Lost to control11%
Median lift when it won not reported

Median traffic per variant was 1181 visitors. Most ran on homepages (34), product pages (10), lead capture pages (7).

Every change type we can measure in SaaS / Software

change typewin rate in SaaS / Softwaretests
Styling 13%100+
Split URL 12%100+
Body copy 9%33 tests
Headline 6%100+
CTA copy (this page) 2%50+

What CTA copy tests in SaaS / Software measured

A win rate only means as much as the thing being counted, so this is what these tests were actually optimising for.

measured outcomeshare of tests
Signup / registration39%
Purchase / order complete19%
On-page click / engagement10%
Booking / appointment10%

Outcomes below 5% of the set are not listed, so these do not sum to 100. Too few tests in this exact cut to break out on their own, so this is the whole industry. How the outcome was measured moves the win rate a lot — see the methodology.

Why this table is not a ranking

These rates are not like-for-like. How often a test wins depends partly on what it chose to measure: a goal that records a soft signal — a click, a scroll — clears the bar more often than one that records a purchase. Across this data, tests measured against a proxy goal win 13%, against 9% for tests measured against a business outcome.

Categories differ a lot in that mix — proxy goals account for anywhere from 2% to 41% of a category's tests.

Hold the metric fixed and the spread narrows sharply. Comparing only tests measured against a business outcome, the gap between the highest and lowest category falls from 9 points to 6 — at which point the intervals overlap and the categories are not statistically distinguishable.

So read the table as a description of what happened, not as a ranking of what works. If you want the comparison to mean something, compare categories that were measured the same way. The methodology page has the full breakdown.

The industry overview is at SaaS / Software benchmarks; rates across all industries are on the CTA copy benchmark.

What counts as a CTA copy test

The button's words change. Size, colour and position stay as they were. Change the colour too and you have two variables.

Control and variant wireframe for a CTA copy A/B test
Control on the left, variant on the right. Only the changed element is highlighted.

CTA copy tests that won in SaaS / Software

  • The single quiz button was replaced with a quiz question and two choice buttons.

    Lead capture page+29.1%

CTA copy tests that did not

  • The button text changed from "Start for free" to "Share a recognition".

    HomepageNo significant difference

  • A new demo CTA button was added to the top navigation, and the sign-up button was restyled as a secondary button.

    HomepageNo significant difference

  • The button text changed from a demo-booking label to a more conversational sales call to action across matching buttons.

    HomepageNo significant difference

These are individual tests, not rules. Each ran on one site, with one audience, against one page we are not showing you. They are picked to be illustrative rather than sampled at random, and a change that won here can lose on your page for reasons none of this captures. Read them as prompts for what to test, not as findings to copy.

Who ran these tests

This is every Mida account that ran a readable test — in-house marketers, founders, product teams, and agencies working on client sites. Nothing here is filtered by who ran the experiment or how experienced they are.

Low win rates are normal in experimentation, including at the top end. Microsoft's experimentation team, reporting on its own platform, found that only about one third of ideas improve the metric they were designed to improve — and that roughly another third actively hurt it. That is a dedicated experimentation organisation with research, prioritisation and review behind every test.

A mixed population like this one runs below that. The gap is roughly what disciplined practice buys you: ideas grounded in research rather than opinion, one variable at a time, and tests built so the result can actually be read.

A win is a variant that beat its control on that test's primary goal with a statistically significant result. Tests that never got enough traffic to say anything either way are excluded. The methodology has the full detail, including what these numbers cannot tell you.