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SPECIFICTION
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Adstacker vs AdTest.AI

Adstacker

adstacker.io

AdTest.AI

adtest.ai

Side by side

FigureAdstackerAdTest.AI
Price from$99/mo$30/mo
Free plan——
Free trial—Yes
Open source——
WebYesYes
iOS—Yes
Android—Yes
API—Yes
Plans published38
Spec score · Ad Creative Testing Tools7.7 (#11)8.5 (#5)
IntegrationsThe privacy policy lists Stripe, AWS, Supabase, and OpenAI as examples of third-party providers the services may integrate with.AdTest.AI offers a REST API and an official Claude MCP server for AI-only scoring; the MCP page also describes compatibility with other MCP clients that can run a local stdio server.
PurposeAdstacker creates, renders, organizes, and exports video advertising variations by combining modular creative assets.AdTest.AI scores advertising creative before launch and offers optional first-party audience research to validate results.
SupportSupport is available by email, with the About page stating a response time within 1 business day.Support is offered by email and chat, and the contact page says messages are answered within one business day, most within four hours.

Plans

Adstacker

  • Creator Plan$99 a month
  • Pro Plan$249 a month
  • Agency Plan$599 a month

Adstacker pricing →

AdTest.AI

  • Creator$30 a month
  • Starter$50 a month
  • Growth$100 a month
  • Pro$200 a month
  • Essential audience study (100 responses)$299, paid once
  • Plus + audience study (100 responses)$349, paid once
  • Scale$350 a month
  • Pro audience study (100 responses)$399, paid once

AdTest.AI pricing →

In their own words

Adstacker

Adstacker has no write-up on Specifiction yet; its figures are above.

Visit adstacker.io

AdTest.AI

AdTest.AI evaluates advertising creative before launch with AI scoring and optional audience research. Its engine scores ads across 13 dimensions and returns an overall effectiveness score, strengths, weaknesses and recommendations. It accepts images, video, carousels and messaging copy; AI Ad Studio can generate platform-ready variants from a brand URL and send them for scoring. Optional audience studies combine human ratings with AI scores in a Mixed Score, with audience reads taking 24–48 hours. Reports can be exported as branded multi-page PDFs, and audience results can be cross-tabulated and exported as CSV. Team workspaces support project sharing, role-based access, invitations and per-workspace billing. The seven-day trial requires no credit card and includes three AI test credits, but not API or MCP access. Paid plans include Creator at $30 a month and Starter at $50 a month; one-time audience studies start at 299.00 USD. Android and iPhone apps let existing users run tests and review reports, while purchases are made on the web. The service also offers a REST API and an official Claude MCP server for AI-only scoring.

Visit adtest.ai