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SPECIFICTION
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Flatproof vs MarkUp

Flatproof

flatproof.app

MarkUp

markup.io

Side by side

FigureFlatproofMarkUp
Price from$5/mo$79/mo
Free planYes—
Free trial—Yes
Open source——
WebYesYes
API—Yes
Plans published319
Spec score · Design Proofing Software8.1 (#11)8.7 (#3)
IntegrationsThe product shows Google Drive and Figma integrations for importing source files or frames.Official integration material documents Slack, Microsoft Teams, Zapier, Loom, Asana, Trello, Basecamp, Mailchimp, Google Sheets, Airtable, Todoist and Notion workflows.
ProductFlatproof is online proofing software for client approvals.MarkUp lets collaborators upload content, leave contextual comments, and share it for review.
SecurityFlatproof says it uses access controls, signed upload and download flows, rate limits on sensitive endpoints, encryption where appropriate, and production security headers.Enterprise includes SOC II documentation, SSO (SAML), and a custom DPA.
SupportRefund requests are handled by emailing support from the address associated with the Flatproof account.Business and Enterprise include priority support, described as moving requests to the front of the queue for faster responses.

Plans

Flatproof

  • FreeFree
  • Solo$5 a month
  • Studio$29 a month

Flatproof pricing →

MarkUp

  • Pro (50 MarkUps)$79 a month
  • Pro (50 MarkUps/month)$79 a month
  • Pro (75 MarkUps)$99 a month
  • Pro (75 MarkUps/month)$99 a month
  • Pro (100 MarkUps)$129 a month
  • Pro (100 MarkUps/month)$129 a month
  • Business (200 MarkUps)$499 a month
  • Business (200 MarkUps/month)$499 a month
  • Business (400 MarkUps)$649 a month
  • Business (400 MarkUps/month)$649 a month

MarkUp pricing →

In their own words

Flatproof

Flatproof is web-based proofing software for client approvals. It handles images, PDFs, videos, audio, live websites, Figma links, presentations, and other uploaded files. A user can upload or import a proof, share one link, gather comments, manage versions, and record approvals. Clients and reviewers can comment and approve through that link without becoming paid seats. Annotation tools, approval workflow, version history, and guest reviewers are included. AI review inspects selected areas and creates private draft suggestions that the user may turn into feedback. Google Drive and Figma integrations are shown for importing source files or frames. Flatproof has a free plan with 200MB storage and 25MB uploads, plus unlimited creators and reviewers. Solo costs $5 a month with 100GB storage; Studio costs $29 a month with 1TB storage and bring-your-own AI key. The product is in beta, so bugs and interruptions may occur.

Visit flatproof.app

MarkUp

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

Visit markup.io