Butterhttps://butter.dev/

Your landing page’s weakest score is CTA.

How Butter ranks

  1. 1.Daytona81
  2. 2.E2B80
  3. 3.Modal76
  4. 4.Microsandbox72
  5. 5.Butter43
Fix CTA
43Growth scoreupdated

category scores

CTA30Trust32
category scoresShowHide
CTA30Trust32

CTA

30Poor

Copy, size, verb, cost-feel — does the primary CTA earn the click?

Daytona
E2B
Modal
Microsandbox

Problems

  • no CTA anywhere on the page
  • only action is an inline text link
  • fold is mostly empty space

Trust

32Poor

Proof that the product is real, competent, and safe to try.

Daytona
Microsandbox
Modal
Trust read
ButterNo visible trust signal identified.
E2Bimplicit context E2B may benefit from pre-existing familiarity among its target audience.
DaytonaLogo strip "Agents at these companies use Daytona" with Meta, Cohere, SambaNova, and Writer logos and Case Study links
ModalCustomer logo strip featuring Ramp, Quora, DoorDash, Suno, Cognition, Runway, Substack, PostHog
Microsandbox"backed by y combinator (f26) · apache 2.0" badge above the hero headline

Information hierarchy

48Poor

Does the design help or inhibit what the page is trying to say?

Butter desktop capture for Information hierarchy

What works

What to improve

Mobile web

48Poor

The phone experience as a first-class citizen.

Butter mobile capture for Mobile web

What works

What to improve

Value props

58Fair

Title, subtitle, hero — do they sell the product's true value?

Butter’s headlineLocal Agent SandboxesButter is building bVisor, an incredibly lightweight sandbox runtime for AI agents.

Working

Could improve