
FaceCheck
PimEyes
FacesearchAI
Lenso.ai
TinEye
Profacefinder
Detect Face Shape
Find your photos online and understand your digital footprint — just upload your face. AI-powered face search across the web.

Keygen
The simplest way to license your app.

Which is more popular?
Based on our record, Keylight.dev seems to be more popular. It has been mentioned 4 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | facesearch.app | keylight.dev |
| Pricing | ||
| Platforms | — | |
| Company | 2025 | Startup from Belgium · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


Face Search is an AI-powered tool that lets you search the internet using just a photo instead of text. Whether you’re curious about your doppelgänger, verifying someone’s identity, or tracking down where an image came from, Face Search makes the process simple and secure. All you have to do is...
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.
What each product offers, as listed by its team.


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


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Trailer
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing FaceSearch.app and Keylight.dev.
FaceSearch.app's answer
It combines precision, speed, simplicity, and privacy in one intuitive tool
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.
FaceSearch.app's answer
FaceSearch.app stands out by offering instant, AI-powered face recognition that searches public web sources with high accuracy with GUARANTEED RESULTS.
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.
FaceSearch.app's answer
FaceSearch.app primarily serves journalists, investigators, security professionals, and everyday users who need to verify identities, trace images, or detect impersonations quickly and securely.
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
FaceSearch.app's answer
FaceSearch.app was created to make visual identity verification accessible to everyone—bridging the gap between advanced AI image analysis and everyday online safety needs, born from the growing demand for trust and transparency on the web.
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.
FaceSearch.app's answer
The platform is built using advanced facial recognition AI models, computer vision frameworks, and scalable cloud infrastructure optimized for privacy and real-time search.
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
FaceSearch.app's answer
Keylight.dev's answer:
That's confidential.
Share your experience with using FaceSearch.app and Keylight.dev. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


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


Tracking FaceSearch.app since Oct 2025.
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
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
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
When comparing FaceSearch.app and Keylight.dev, you can also consider the following products.

FaceCheck is a free face recognition search engine. It allows you to search the Internet using a photo of a face. The search result will show you links to webpages on the Internet where the face of a person or people who look similar have been seen.
Compare FaceCheck to FaceSearch.app or Keylight.dev:

A dead-simple software licensing API built for developers
Compare Keygen to FaceSearch.app or Keylight.dev:

Search by face image and find given person with information where this person appear online. PimEyes analyzes over 50 million websites to provide the most accurate search results.
Compare PimEyes to FaceSearch.app or Keylight.dev:

Search Any Face Online from Images & Video
Compare FacesearchAI to FaceSearch.app or Keylight.dev:

Lenso.ai - Search for places, people, duplicates and more with AI-powered reverse image search
Compare Lenso.ai to FaceSearch.app or Keylight.dev:

Reverse Image Search to help find an image's source, duplicates or altered versions.
Compare TinEye to FaceSearch.app or Keylight.dev: