Softwr

Design · head to head

Abstract vs Proto.io

Abstract logo

Abstract

Design

Design version control and asset management

From
Free
Rated
-
Full review
Proto.io logo

Proto.io

Design

Hosted high-fidelity prototyping with device preview and no code

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Abstract has a free tier, so it costs nothing to try first.
  • Each has a real cost: Abstract the product appears to be gone. Its documentation path 404s, goabstract.com no longer resolves, and abstract.com now belongs to an unrelated venture capital firm; Proto.io prototypes live in the vendor cloud and offline export is a higher-tier feature, so the ability to archive completed client work is a plan-level decision rather than a given.
  • They diverge on capability: Abstract covers Version control, Proto.io covers Event and condition system.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Abstract and Proto.io actually diverge.

Attributes where Abstract and Proto.io differ
AttributeAbstractProto.io
Starting priceFreeOn request
Pricing modelsubscriptionPer user per month
Free tierYesNo
PlatformsMacos, WebWeb, iOS, Android
Founded2015Unknown

Identical on both: user rating (Not yet rated), category (Design).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Abstract

  • Version control
  • Branching & merging
  • Asset library
  • Design tokens
  • Collaboration
  • File management
  • Comments
  • Activity tracking

Only in Proto.io

  • Event and condition system
  • Timeline animation
  • Device preview
  • Component library
  • User testing integration
  • Design import

What people use each for

The jobs each tool is most often brought in to do.

Abstract

  • Design systemsnot Proto.io
  • Version controlnot Proto.io
  • Asset managementnot Proto.io
  • Team collaborationnot Proto.io

Proto.io

  • Running usability tests where the prototype must respond to real input rather than replay a fixed click pathnot Abstract
  • Demonstrating a form-heavy or data-driven flow to stakeholders before any code existsnot Abstract
  • Testing a mobile interaction on the physical device it is designed for, with correct gesture behaviournot Abstract
  • Validating a concept for a client who needs to feel the product, not watch a video of itnot Abstract

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Abstract

  • The product appears to be gone. Its documentation path 404s, goabstract.com no longer resolves, and abstract.com now belongs to an unrelated venture capital firm
  • Built around Sketch files, so it never covered teams that moved to Figma

Proto.io

  • Prototypes live in the vendor cloud and offline export is a higher-tier feature, so the ability to archive completed client work is a plan-level decision rather than a given.
  • Design is done elsewhere and interaction is rebuilt here, so every change to the visual design has to be reapplied by hand and the two artefacts drift apart.
  • The event and condition model is layer based, so a genuinely complex flow becomes a large tree of triggers that nobody but its author can audit.
  • Editor seats are priced individually and viewer access is limited on lower plans, so opening review to a wide stakeholder group pushes you up a tier for people who never edit anything.
  • The market standardised on Figma, so hiring people who already know Proto.io is progressively harder and every new researcher is a training cost.

Pricing, plan by plan

Abstract

Free
  • FreeFree
    • 1 shared library
    • Basic version control
    • 2 team members
  • Pro$12/month
    • Unlimited libraries
    • Full version control
    • Unlimited team members
  • Enterprise$50/month
    • Everything in Pro
    • Advanced admin controls
    • Compliance & security

Proto.io

On request
  • Freelancer$undefined/month
    • Single editor
    • Limited active projects
    • Standard sharing
  • Startup$undefined/month
    • Multiple editors
    • More projects
    • Team library
  • Agency$undefined/month
    • Higher project and storage limits
    • Client sharing controls
  • Corporate$undefined/month
    • Largest quotas
    • Offline export on higher tiers
    • Priority support

Which should you pick?

Choose Abstract if

  • You need version control.
  • You want to start without paying.
  • You work on Macos, Web.
  • You also want branching & merging.
Abstract review

Choose Proto.io if

  • You need event and condition system.
  • You work on Web, iOS, Android.
  • You also want timeline animation.
Proto.io review

Questions people ask

Is Abstract or Proto.io better?
Neither clearly leads. Abstract starts at Free and Proto.io at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Abstract or Proto.io?
Abstract has a free tier; the other does not. Paid plans start at Free for Abstract and On request for Proto.io.
Does Abstract or Proto.io run on more platforms?
Abstract runs on Macos, Web. Proto.io runs on Web, iOS, Android.
Can I use Abstract for free?
Yes. Abstract has a free tier, so you can try it without paying. Proto.io starts at On request.
What is Abstract best used for?
Abstract is most often used for design systems, version control, asset management, team collaboration. Of those, design systems and version control are not what Proto.io is typically brought in for.
What can Abstract do that Proto.io cannot?
Abstract covers Version control, Branching & merging, Asset library, Design tokens. Proto.io covers Event and condition system, Timeline animation, Device preview, Component library.

Answered from the vendors’ own pages

Proto.io: Can it replace Figma?

No. It has no design system or file-handoff role. It sits alongside Figma for the prototypes Figma cannot express.

Proto.io: What happens to prototypes if we stop paying?

They stop being accessible unless you have exported them, and offline export is restricted to higher plans, so plan archiving before you cancel.

Proto.io: Is it worth learning now that InVision has gone?

If your work is usability research on conditional flows, yes. If you need click-through demos of static screens, Figma already does that at no extra cost.

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