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ProtoPie VS Underlayer

Compare ProtoPie VS Underlayer and see what are their differences

ProtoPie

ProtoPie is the easiest tool used to turn your UI/UX design ideas into highly interactive prototypes for mobile, desktop, web, all the way to IoT.

Rating
0 reviews
Pricing
Paid Free trial $13 / Monthly
Alternatives Is it good?
Underlayer

Build courses by API, drop them into your product with one iframe, and get told who finished. No portal, no learner accounts, priced per course view.

Rating
0 reviews
Pricing
Freemium $149 / Monthly
Alternatives Is it good?
RealityMAX
RealityMAX is the full-stack, AI-powered product visualization platform, 100% online. Turn any image into 3D in seconds, enhance your visuals with AI, and download your work or share it as interactive 3D or AR in a snap, without a line of code. sponsored
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Which is more popular?

Based on our record, ProtoPie seems to be more popular. It has been mentioned 1 time since March 2021.

social mentions
1 vs 0
Prototyping popularity
100% vs 0%
alternatives listed
240+ vs 2

Base details

Website, pricing, platforms and company facts side by side.

ProtoPie
Underlayer
Website protopie.io underlayerhq.com
Pricing
Paid Free trial $13 / Monthly Official pricing
Freemium $149 / Monthly Official pricing
Platforms
Windows iOS Mac OSX Android iPhone +2
—
Company Startup from South Korea · 50 - 99 employees · 2014 Startup from the United Arab Emirates · 1 - 9 employees · 2026
Listed in
Prototyping Design Collaboration Design Tools UX UI Interaction Design +3
Education E-learning Education / E-Learning

About ProtoPie and Underlayer

In their own words, as submitted to SaaSHub.

ProtoPie
Underlayer

ProtoPie is the easiest tool used to turn your UI/UX design ideas into highly interactive prototypes for mobile, desktop, web, all the way to IoT. Designers can explore, validate, and test design solutions and ideas by creating very realistic, production-like prototypes without code and the help...

Read more about ProtoPie

Underlayer is headless, API-first training for SaaS products. Instead of sending your users to a separate LMS portal, you generate a course, embed it where they already work, and get every completion sent back to your own systems. How it works Create a course. Generate one from a doc or a prompt...

Read more about Underlayer

Features and specs

What each product offers, as listed by its team.

ProtoPie 3 features
Underlayer 0 features
  • Free Trial
    7 days and an additional 10 days for free
  • Easy to Set-up and use
    Incredibly easy due to its unique conceptual model
  • Integrations
    Sketch, Adobe XD, and Figma

No features have been listed yet.

Analysis

An editorial look at what each product does well and who it suits.

ProtoPie
Underlayer

Overall verdict

  • ProtoPie is a robust and versatile prototyping tool that is well-suited for creating interactive and realistic prototypes. It is highly recommended for users who require detailed and dynamic prototypes that go beyond basic designs.

Why this product is good

  • ProtoPie is generally considered a good tool for interactive prototyping due to its powerful features that allow designers to create high-fidelity prototypes with advanced interactions. It supports interaction with various sensors and hardware capabilities, making it ideal for testing highly interactive concepts. The interface is user-friendly, and it does not require a background in coding to create complex prototypes, which is appreciated by both designers and developers.

Recommended for

  • UX/UI designers looking for advanced prototyping capabilities.
  • Design teams needing to demonstrate complex interactions and animations.
  • Professionals working on projects that require integration with device sensors and hardware.
  • Individuals or teams who do not want to write code to achieve high fidelity in prototypes.

No analysis of Underlayer yet.

Videos

Walkthroughs and reviews on video.

ProtoPie 2 videos + Add
Underlayer 1 video + Add

Intro to ProtoPie 4

More videos

  • - ProtoPie ProtoTyping - I've never tried this software before, let's try it out

Underlayer demo

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
ProtoPie
Underlayer
100% 100%
Prototyping
0% 0%
0% 0%
Education
100% 100%
100% 100%
Design Tools
0% 0%
0% 0%
E-learning
100% 100%

Questions & Answers

As answered by people managing ProtoPie and Underlayer.

Who are some of the biggest customers of your product?

Underlayer's answer:

it's pre-launching

What makes your product unique?

Underlayer's answer:

Underlayer is training with no portal. You build a course by API, by MCP, or in the visual builder, and add it to your product with one iframe. Then signed webhooks tell your systems who finished. Learners never create an account or leave your app, and the player uses your theme, so it looks like part of your product. We charge per course view, not per seat, and every price and overage rate is published.

Why should a person choose your product over its competitors?

Underlayer's answer:

Most course tools, like Coassemble, Trainn and LearningStudioAI, assume training happens on their own site: learners sign up, log in and get enrolled, and you pay per seat. Underlayer takes the opposite approach:

No learner accounts. You pass in your own user IDs and we track progress against them. Built for developers. A full REST API covers every resource, and an MCP server lets AI agents create and edit courses. Results in your own tools. Signed webhooks send completions to your CRM, your product or your data warehouse. SCORM 1.2 and 2004 export for customers who still need to load courses into an LMS. Public pricing. Plans start at $149/month for 25,000 course views, with unlimited learners and no sales call required.

How would you describe the primary audience of your product?

Underlayer's answer:

SaaS product, customer success and engineering teams who want onboarding, product education or compliance training inside their own app. It also suits platforms that train other people's users, like partner networks, marketplaces and field-ops tools, where a separate LMS login gets in the way.

What's the story behind your product?

Underlayer's answer:

Every company putting training in front of its users hit the same wall: the LMS wanted to own the learner. That meant a separate portal, a second login and a per-seat bill for people who never opened a course. We built Underlayer as the layer underneath instead. You keep the product and the user relationship. We handle building the course, playing it and tracking progress, and we stay out of the way.

Which are the primary technologies used for building your product?

Underlayer's answer:

Next.js 16 (App Router) with React 19 and TypeScript, Tailwind CSS v4, and Supabase (Postgres with row-level security, Auth and Storage). Claude from Anthropic generates courses with AI. Stripe handles billing and Resend sends email. There is also a remote MCP server with OAuth 2.1 for AI-agent access.

User comments

Share your experience with using ProtoPie and Underlayer. For example, how are they different and which one is better?

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Reviews and articles

External articles and on-site reviews we used to compare the two products.

ProtoPie no reviews yet
Underlayer no reviews yet
  • Top 5 Zeplin Alternative
    mockitt.wondershare.com · Jun 2024

    Protopie is another good alternative to Zeplin worth giving a try. It offers an amazing platform to design great user interfaces. It provides powerful interactions ranging from simple ones to those using Excel-grade...

  • Top 6 Figma Alternatives: Prototyping and UI/UX Tools
    fronty.com · Apr 2024

    Explicitly focused on interactive prototyping, ProtoPie offers high fidelity and control over micro-interactions and animations. Its intuitive interface and support for complex interactions make it a preferred choice...

We have no reviews of Underlayer yet. Be the first one to post

Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

ProtoPie 1 mention
Underlayer 0 mentions
  • What’s your preference: ProtoPie, Principle, or prototyping directly in Figma?
    Https://protopie.io Try it and see for yourself. Source: about 5 years ago

Tracking Underlayer since Sep 2026.

Alternatives to ProtoPie and Underlayer

When comparing ProtoPie and Underlayer, you can also consider the following products.

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