Best Design Tools · head-to-head

Proto.io vs Sketch

A sourced, side-by-side comparison for design tools. Proto.io has the lower entry price. Every figure links to the public page it was captured from — the vendor's own wherever the vendor publishes the number, otherwise the named public source — with the date we captured it.

Proto.io has the lower entry price — Proto.io starts at $0/mo, Sketch at $12/mo. Free tier: Proto.io Yes, Sketch No. HIPAA: Proto.io —, Sketch No.

As of 2026-09-10 · figures link to their source below

Side by side

Proto.io

$0/mo entry
Entry price$0/mo (Free)
Free tierYes
HIPAA (BAA)
SOC 2
GDPR
Best forFreelancers and small fixed-size product teams

Sketch

$12/mo entry
Entry price$12/mo (Standard)
Free tierNo
HIPAA (BAA)No
SOC 2
GDPRYes
Best forMac-native UI/UX designers preferring offline-capable tools

Sources — Proto.io: proto.io (verified 2026-09-10) · Sketch: sketch.com (verified 2026-09-02)

Key features

Proto.io: High-fidelity prototyping with unlimited reviewers on every paid tier; Bundled-user flat pricing, which beats per-seat tools for small fixed teams; Full-featured 15-day trial with no credit card required

Sketch: Native Mac app with offline editing; Vector editing with boolean operations and variable fonts; Smart Animate prototyping with easing controls; Real-time co-editing with follow mode; Design tokens export (CSS/JSON); BYOK encryption (Enterprise/Private Cloud); SCIM provisioning (Enterprise); Free unlimited viewers on all paid plans; iOS Mirror app for on-device preview; ISO 27001 certified and GDPR compliant (AWS-hosted infrastructure)

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