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Proto.io VS Keylight.dev

Compare Proto.io VS Keylight.dev and see what are their differences

Proto.io

Create fully-interactive high-fidelity prototypes in minutes that look and work exactly like your app should. Sign up for a free 15-day trial and get started.

Rating
0 reviews
Alternatives Is it good?
Keylight.dev

The simplest way to license your app.

Rating
5.0 · 1 review
Pricing
Open source Freemium $19 / Monthly (Up to 2000 licenses active.)
Alternatives Is it good?
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InboxAgent uses AI to read your shared mailboxes, like info@ and sales@, plus everyone's own inbox, on Microsoft 365, Gmail, Zoho Mail or IMAP. It finds the sales leads and gives each an owner on a board. Never sends from your mailbox. 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, Proto.io should be more popular than Keylight.dev. It has been mentioned 28 times since March 2021.

social mentions
28 vs 4
Prototyping popularity
100% vs 0%
alternatives listed
240+ vs 1

Base details

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

Proto.io
Keylight.dev
Website proto.io keylight.dev
Pricing
Official pricing
Open source Freemium $19 / Monthly (Up to 2000 licenses active.) Official pricing
Platforms —
Web
Company Startup from Cyprus Startup from Belgium · 1 - 9 employees · 2026
Listed in
Prototyping Design Collaboration Design Tools Wireframing +1
Developer Tools Software Development License Management Productivity Tech Web App Tool +4

About Proto.io and Keylight.dev

In their own words, as submitted to SaaSHub.

Proto.io
Keylight.dev

No description of Proto.io yet.

Keylight sits between your payment provider and your app. Licenses, activations, customers, and usage all live here. Switch providers, or run several, without shipping a new build.

Read more about Keylight.dev

Features and specs

What each product offers, as listed by its team.

Proto.io 5 features
Keylight.dev 16 features
  • User-Friendly Interface
    Proto.io offers a highly intuitive and straightforward interface, making it accessible even for users with minimal design experience.
  • Interactive Prototypes
    The platform allows for the creation of highly interactive prototypes that can simulate the final product's user experience effectively.
  • Collaboration Features
    Proto.io includes robust collaboration tools, enabling multiple designers and stakeholders to work together in real-time.
  • Extensive Asset Library
    The tool provides access to a vast library of built-in assets, templates, and UI components which can accelerate the design process.
  • Cross-Platform Compatibility
    Proto.io supports cross-platform prototype testing, ensuring designs can be easily tested on various devices and operating systems.

Possible disadvantages

  • Pricing
    The cost of Proto.io can be a drawback for smaller teams or individual designers, as it is relatively expensive compared to some other prototyping tools.
  • Learning Curve for Advanced Features
    While the basic features are straightforward, there can be a steep learning curve for mastering its more advanced functionalities.
  • Browser-Based Performance
    Because it operates through a web browser, Proto.io’s performance can sometimes be slower compared to native desktop applications.
  • Limited Export Options
    The export options are somewhat limited, which can be a challenge when needing to transfer prototype designs to other formats or tools.
  • Offline Access
    Proto.io requires an internet connection to function, meaning offline access to projects is not available, which could be inconvenient in certain situations.
  • License Management
    Create, validate, revoke, and manage software licenses from one dashboard.
  • Device Activations
    Limit how many devices can use a license and manage individual activations.
  • Offline Access
    Keep apps working securely without a constant internet connection using signed offline leases.
  • License States
    Handle trial, free, paid, expired, limited, and grace-period access through one consistent state.
  • Payment Provider Integrations
    Connect Stripe, Paddle, Lemon Squeezy, Polar, Gumroad, and other payment platforms.
  • Provider Independence
    Change payment providers or use multiple providers without rebuilding your app’s licensing system.
  • Swift SDK Integration
    Add licensing to macOS and iOS apps using a native Swift package.
  • Secure License Validation
    Protect license data with cryptographic signatures and tamper-resistant validation.
  • Trials and Free Tiers
    Configure trials, free plans, fallbacks, and upgrade paths without building custom logic.
  • Customer Dashboard
    View licenses, customers, devices, activations, plans, and access status in one place.
  • License Analytics
    Track activations, active licenses, usage, and customer activity.
  • Key Rotation
    Rotate SDK signing keys without breaking older application versions.
  • Webhook Synchronization
    Convert payment, renewal, refund, cancellation, and subscription events into license updates.
  • Device-Bound Storage
    Store license data securely on the customer’s device without unnecessary Keychain prompts.
  • REST API
    Connect custom backends, checkout systems, and internal tools to Keylight.
  • Agentic Orchestration
    CLI usable by AI Agents to run the whole setup and more.

Analysis

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

Proto.io
Keylight.dev

Overall verdict

  • Overall, Proto.io is highly regarded for its user-friendly interface and robust features that cater to both beginner and experienced designers. It is well-suited for teams that need to develop and iterate on prototypes quickly, and its emphasis on interactive design makes it a valuable tool for creating realistic user experiences.

Why this product is good

  • Proto.io is a popular tool for building interactive prototypes of mobile apps with ease. It offers a range of features that enable users to create high-fidelity prototypes without needing to write code. The platform supports numerous interactive features, allowing designers to simulate real user experiences. It also supports collaboration, making it easier for teams to work together and get feedback, and it integrates with various design and communication tools. Additionally, Proto.io provides a range of templates and UI components that speed up the design process.

Recommended for

  • UI/UX designers who need to create interactive prototypes.
  • Product managers who require quick iterations and feedback loops.
  • Startups and teams that need to validate ideas with stakeholders.
  • Developers who want to test design concepts without writing code.
  • Educational purposes for teaching design and prototyping concepts.

Overall verdict

  • I don't have verified, up-to-date information about Keylight.dev specifically, so I can't confirm its quality, features, or reliability. It may be a newer or niche tool that isn't well-documented in my training data. I'd recommend checking recent user reviews, the official website's documentation, and community forums (like GitHub, Reddit, or Twitter) for firsthand feedback before making a decision.

Why this product is good

  • Unable to verify specific features, pricing, or performance claims for this product
  • No confirmed user reviews or independent testing data available
  • Cannot confirm company legitimacy, support quality, or security practices without direct verification

Recommended for

  • Users willing to conduct their own due diligence by visiting the official site directly
  • Developers who can test the product via a free trial or demo before committing
  • Anyone who checks third-party review sites, GitHub issues, or community discussions for real user experiences

Videos

Walkthroughs and reviews on video.

Proto.io 3 videos + Add
Keylight.dev 0 videos + Add

Proto.io Review: My Experience

More videos

  • - Top 7 Features | Proto.io Prototyping Tool
  • - Core features of Proto.io

No Keylight.dev videos yet. You could help us improve this page by suggesting one.

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
Proto.io
Keylight.dev
100% 100%
Prototyping
0% 0%
0% 0%
Tool
100% 100%
100% 100%
Design Collaboration
0% 0%
0% 0%
Productivity
100% 100%

Questions & Answers

As answered by people managing Proto.io and Keylight.dev.

What makes your product unique?

Keylight.dev's answer:

Keylight keeps app licensing separate from payments. You can use Stripe, Paddle, Lemon Squeezy, Polar, Gumroad, or your own checkout without tying your app to one provider.

It handles license keys, device activations, trials, free tiers, offline access, grace periods, and signed license state through one SDK.

Why should a person choose your product over its competitors?

Keylight.dev's answer:

My goal is to make all apps work with Keylight. So all of your licenses, from any types of apps, is going through Keylight for analytics, customer portal, support, ...

Most licensing tools are bundled into a payment provider. Keylight is built as an independent licensing layer.

That means you can change payment providers, sell through multiple platforms, or change your pricing model without rebuilding licensing inside your app.

It also gives developers a ready-made SDK and dashboard instead of requiring them to build and maintain their own licensing backend.

How would you describe the primary audience of your product?

Keylight.dev's answer:

Keylight is primarily built for independent developers and software companies selling apps directly to customers.

Its main audience includes:

macOS and iOS developers Web app and SaaS developers Developers selling outside app stores Teams migrating from a payment provider’s built-in licensing Developers who need trials, device limits, offline access, and license analytics

What's the story behind your product?

Keylight.dev's answer:

Keylight started because I kept rebuilding the same licensing systems for different apps: license keys, trials, activations, offline access, device changes, and all the edge cases that come with them.

I also did not want licensing to be controlled by whichever payment provider an app happened to use.

So I built Keylight as a standalone layer between the app and the payment provider. Payment platforms send events to Keylight, and the app receives one consistent license state through the SDK.

Who are some of the biggest customers of your product?

Keylight.dev's answer:

That's confidential.

Which are the primary technologies used for building your product?

Keylight.dev's answer:

Swift and Swift Package Manager for the Apple SDK Rust SDK / JS SDK / C# SDK / C++ SDK TypeScript React Next.js Stripe Connect and payment-provider webhooks Cryptographic signatures for secure, offline-capable licenses REST APIs for application and provider integrations

User comments

Share your experience with using Proto.io and Keylight.dev. 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.

Proto.io no reviews yet
Keylight.dev 5.0 · 1 review

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Social recommendations and mentions

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

Proto.io 28 mentions
Keylight.dev 4 mentions
  • The Best 100 Free UI/UX Resources for Every Designer & Developer
    Proto.io Proto.io Interactive prototyping tool with a 15-day free trial. - Source: dev.to / over 1 year ago
  • Tips for short hackathon?
    As it will be a team project then in the beginning I suggest to define the least minimum your team is going to deliver. And then divide up the tasks on who does what. As a backup plan somebody should know how to use Figma or proto.io for... Source: over 3 years ago
  • When do I know it's time to get my first jr role?
    A prototyping tool. Figma, proto.io or something else. Often you have to make a mock up first, for a client or for a business side, before you start working on the code. Source: over 3 years ago

View more

  • How offline license activation actually works
    You don't want to hand-roll Ed25519 and lease parsing. Most licensing SDKs hide this behind a couple of calls. With Keylight, for example, the offline path collapses to: activate once, then a local checkOnLaunch() that verifies the lease... - Source: dev.to / 3 months ago
  • I compared the licensing tools for my indie Mac app — the honest breakdown
    Full disclosure: I now build Keylight, so weigh this accordingly — I'm telling you the seam it's designed for, not that it wins every row. - Source: dev.to / 3 months ago
  • How to add license keys to a SwiftUI macOS app (in under an hour)
    Full docs and the free tier are at keylight.dev. If you're on Tauri or Electron instead of native Swift, the same SDK pattern exists in JS/Rust. - Source: dev.to / 3 months ago

View more

Alternatives to Proto.io and Keylight.dev

When comparing Proto.io and Keylight.dev, you can also consider the following products.

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