Unlimited free A/B test log builder

Free AI A B Test Log Form Generator

Describe your process and Makeform creates a structured A/B test log form for the hypothesis, variants, audience, metric, dates, results, and decision.

Chat input for the Makeform, best AI form builder. Press Enter to submit your request and generate a form. Use Shift+Enter to add a new line.
  • Unlimited free
  • Editable before publish
  • Structured hypothesis and results fields
  • Built for marketing and product experiments
Explore form features
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Sample prompts for the builder

Choose a prompt, tailor it to your testing process, or send it into the Makeform builder. The field structure is an example, not a live AI result.

Prompt ready

Audience

Growth marketers testing page messages

Format

Experiment brief and result record

Prompt size

278 chars

Brief qualitySends to builder

Example form structure

Experiment brief and result record

Prompt exampleEditable in builder

Experiment ID, owner, and page URL

Short answerFirst ask
2

Hypothesis: if, then, because

Long answer
3

Control and treatment details

Long answer
4

Primary metric, baseline, and target

Number
5

Outcome and next action

Dropdown

Suggested routing tags

Suggested

Planned

Running

Decision recorded

Name one primary success metric before the test begins. Separating it from guardrail and diagnostic metrics makes the final decision easier to interpret.

Step 1

Plan

state the hypothesis and success metric

Step 2

Configure

document variants, audience, and allocation

Step 3

Measure

enter exposures, outcomes, and guardrails

Step 4

Decide

record interpretation and next action

Why use a test log

A result without its setup is hard to trust later.

A structured log preserves why the test existed, what each audience saw, and how the team planned to decide.

One schema for every experiment

Required fields keep hypotheses, variants, metrics, and decisions comparable.

Control and treatment stay distinct

Dedicated variant fields prevent copy, screenshots, allocation, and outcome numbers from becoming mixed together in a long project note.

Decision context survives

Store counts, anomalies, guardrails, interpretation, and follow-up beside the decision.

Experiment programs

Adapt the same log to the channel you test.

Start with a shared experiment spine, then add channel-specific metrics, artifacts, and decision choices.

Landing pages

Log copy, layout, CTA, or offer variants alongside traffic source and conversion outcomes.

Email campaigns

Compare subject lines, send times, or body content with delivery, click, and unsubscribe context.

Product experiences

Document eligibility, feature flags, activation windows, retention guardrails, and rollout decisions.

Checkout and funnels

Track step-level changes, device scope, purchase outcomes, revenue signals, and error guardrails.

Build your experiment record

From a testing brief to a reusable A/B test log.

Generate the structure, align it with your measurement plan, and publish it.

Explore form features
01

Describe your testing workflow

Name the channels you test, the required planning fields, the metrics you review, and the decisions your team uses.

02

Edit fields and choices

Add statuses, metric definitions, audience rules, stop criteria, and evidence links.

03

Separate plan from readout

Use sections for pre-launch assumptions and post-run results so the original hypothesis is not rewritten after outcomes appear.

04

Publish and route records

Share the form, notify the experiment owner, and send structured submissions to the workspace where your backlog is maintained.

Log vs document vs dashboard

Choose the record that preserves the whole experiment.

The log connects planning inputs to the final decision.

Approach
What it captures
Best use
ApproachAnalytics dashboard
What it capturesEvents, audiences, and measured outcomes after launch.
Best useMonitoring performance and exploring segments.
ApproachProject document
What it capturesFlexible discussion, mockups, meeting notes, and open questions.
Best useCollaboration while an experiment is being designed.
Approach
Structured A/B test log form
What it capturesA consistent hypothesis, setup, result, interpretation, decision, and next step.
Best useBuilding a searchable experiment history with comparable records.

Field guide

What an A/B test log form should include.

A useful log preserves the plan before launch and the evidence after the run. These six sections give every experiment a complete, reviewable story.

Ownership & status

Give every test an identity.

A stable ID and owner prevent duplicates. Status choices show whether an entry is proposed, running, completed, or archived.

  • ID, title, owner, team, and channel.
  • Status, date, and analytics link.
  • Related campaign, flag, or ticket.

Question & hypothesis

Write the expected cause and effect.

Capture the problem and mechanism before metrics arrive. An if-then-because structure makes the reasoning explicit.

  • Problem and supporting evidence.
  • If X, then Y, because Z.
  • Assumptions and disconfirming result.

Variants & audience

Record what actually differs.

Describe control and treatment with links or screenshots. Add eligibility, exclusions, allocation, platform, and geography.

  • Variant names, designs, and links.
  • Audience rules and exclusions.
  • Allocation and assignment unit.

Metrics & stopping

Define success before launch.

Define one primary metric and measurement window. Keep guardrails separate and document the planned stopping rule.

  • Primary metric, baseline, and window.
  • Defined guardrail metrics.
  • Start, run window, and stop criteria.

Results & caveats

Store counts, not only percentages.

Record exposures, outcomes, metrics, and uncertainty per variant. Note tracking changes, overlapping campaigns, and segment differences.

  • Counts by variant.
  • Changes and uncertainty notes.
  • Data quality, anomalies, and guardrails.

Decision & follow-up

Turn the readout into an action.

Choose ship, iterate, stop, or inconclusive, explain why, assign an owner, and link the follow-up task.

  • Decision, rationale, reviewer, and date.
  • Rollout, follow-up, or rollback.
  • Reusable learning and search tags.

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FAQ

A/B test log form questions

Practical answers for marketing, growth, analytics, and product teams building an experiment history.

What is an A/B test log form?

It is a structured experiment record that captures the hypothesis, variants, audience, allocation, metric, guardrails, dates, results, caveats, decision, and follow-up.

What fields should an a b test log form include?

Include ID, owner, status, hypothesis, variants, audience, allocation, primary metric, guardrails, dates, and stop criteria. Add counts, results, anomalies, interpretation, decision, and next action after the run.

Should the hypothesis and results be submitted at different times?

That is often useful. Keep a pre-launch section for the frozen plan and a post-test section for the readout. You can use one record with status-based updates or two linked forms if your team needs stronger separation between planning and analysis.

How should inconclusive A/B tests be logged?

Keep them in the log and label the decision as inconclusive rather than forcing a winner. Record the observed effect, uncertainty, run duration, sample counts, data issues, and whether the next action is to stop, extend only under a documented rule, or design a new test.

Can I use this for multivariate or holdout experiments?

Yes. Add fields for each treatment and describe assignment. For a holdout, record its eligibility, exposure rule, measurement period, and comparison metrics.

Can the form include screenshots and analytics links?

Yes. Add file-upload fields for variant screenshots and short-answer fields for dashboards, queries, tickets, feature flags, or design files. Keep a written variant description too, so the record remains understandable even when an external link changes.

Is this A/B test log form generator free?

Yes. Makeform is unlimited free for generating, editing, publishing, and using your form. The paid tier removes the Makeform badge; it does not unlock additional submission capacity.

How do teams keep experiment records consistent?

Require core planning and readout fields, use controlled status and decision choices, define metrics, and assign a stable ID. Create a new schema version when field meanings change.

Turn scattered test notes into a reusable experiment history.

Generate your A/B test log form and preserve every hypothesis, result, and decision.

Unlimited freeEditable experiment fieldsPlan and readout in one record
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