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JustWatch VS Keylight.dev

Compare JustWatch VS Keylight.dev and see what are their differences

JustWatch

Compare prices of streaming for movies and tv shows.

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?
Kanera
Plan work on flexible boards, connect projects through Global Work and Portfolio, and keep reporting, notes, automation, API, and AI access together. 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, JustWatch seems to be a lot more popular than Keylight.dev. While we know about 299 links to JustWatch, we've tracked only 4 mentions of Keylight.dev.

social mentions
299 vs 4
Movie Streaming popularity
100% vs 0%
alternatives listed
240+ vs 1

Base details

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

JustWatch
Keylight.dev
Website justwatch.com keylight.dev
Pricing —
Open source Freemium $19 / Monthly (Up to 2000 licenses active.) Official pricing
Platforms —
Web
Company — Startup from Belgium · 1 - 9 employees · 2026
Listed in
Movie Streaming Watch Movies Online Movie Ratings Movie Reviews +1
Developer Tools Software Development License Management Productivity Tech Web App Tool +4

About JustWatch and Keylight.dev

In their own words, as submitted to SaaSHub.

JustWatch
Keylight.dev

No description of JustWatch 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.

JustWatch 5 features
Keylight.dev 16 features
  • Comprehensive Database
    JustWatch aggregates data from numerous streaming services, making it easy to find where movies and TV shows are available. This is particularly useful for users who subscribe to multiple platforms.
  • User-Friendly Interface
    The website and app offer a clean, intuitive interface that makes searching for content a seamless experience. It also features various filters and sorting options.
  • Personalized Recommendations
    JustWatch provides tailored content recommendations based on your viewing history and preferences, enhancing the user experience.
  • Availability Alerts
    Users can set up notifications for when specific movies or TV shows become available on their preferred streaming platform, ensuring they never miss out on new content.
  • Cost Transparency
    The service provides information on the cost of buying or renting content, helping users make informed decisions based on their budget.

Possible disadvantages

  • Limited Regional Availability
    Some features and content may not be available in all regions, which can be frustrating for users outside of key markets like the United States or Europe.
  • Ad-Supported Free Version
    The free version of JustWatch is ad-supported, which can be bothersome for some users. An ad-free experience requires subscribing to a premium plan.
  • Data Accuracy
    While generally reliable, there can be occasional discrepancies in the availability of content on certain streaming platforms, leading to user frustration.
  • App Performance
    Some users have reported performance issues such as slow loading times or app crashes, which can detract from the overall user experience.
  • Limited Offline Features
    The app offers limited offline functionality, which can be a drawback for users who wish to use the service in areas with poor internet connectivity.
  • 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.

JustWatch
Keylight.dev

Overall verdict

  • Yes, JustWatch is generally regarded as a useful and effective tool for anyone looking to streamline their streaming experience. It provides a vast amount of information and options in a single interface, which enhances the user's ability to find and access the content they want. Its ease of use, accuracy, and breadth of coverage contribute positively to its reputation.

Why this product is good

  • JustWatch is a popular streaming guide that allows users to discover where to watch movies and TV shows legally online. It aggregates content from a variety of streaming services such as Netflix, Amazon Prime, Hulu, and more, saving users time by providing a comprehensive overview of available content in one place. The platform is user-friendly, offering multiple filters to narrow down search results by genre, release year, and ratings, among other criteria. This makes it a valuable tool for users looking to manage their streaming options efficiently.

Recommended for

    Streaming enthusiasts who subscribe to multiple services, viewers seeking to optimize their subscription choices, users interested in discovering new content across different platforms, and anyone who prefers a streamlined approach to managing their streaming options will find JustWatch beneficial.

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.

JustWatch 2 videos + Add
Keylight.dev 0 videos + Add

App Review: JustWatch (Streaming Service Search Engine)

More videos

  • - Android App Review: JustWatch - Movies & TV Shows

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
JustWatch
Keylight.dev
100% 100%
Movie Streaming
0% 0%
0% 0%
Web App
100% 100%
100% 100%
Movies
0% 0%
0% 0%
Productivity
100% 100%

Questions & Answers

As answered by people managing JustWatch 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 JustWatch and Keylight.dev. For example, how are they different and which one is better?

Log in or Post with

Reviews and articles

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

JustWatch no reviews yet
Keylight.dev 5.0 · 1 review

Social recommendations and mentions

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

JustWatch 299 mentions
Keylight.dev 4 mentions
  • Show HN: I made an app that helps you find where to stream movies and TV shows
    This is nice! At first I thought it was wheel-reinvented https://justwatch.com, but unlike that site, this one shows you which services in each country have the content you're looking for, so that you can watch whatever you want, simply... - Source: Hacker News / over 2 years ago
  • I believe the illusion of convenience with streaming is starting to finally break down
    The fact that we need a justwatch.com is just one of the many reasons physical media will always be king. Even WB with their great collection of movies and subsidiaries can't keep their own content on their own streaming service all the... Source: almost 3 years ago
  • SD vs HD
    Check justwatch.com to see which services offer your content in HD. Source: almost 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 JustWatch and Keylight.dev

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

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