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Top 20 User Authentication SDKs Used in Android Apps on Google Play
Last update: 16 Apr 2025 CET
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Top 20 User Authentication SDKs Used in Android Apps on Google Play

We at 42matters have identified the 20 most popular User Authentication SDKs leveraged by Android apps available on the Android app market.

User Authentication SDKs enable developers to add user authentication capabilities, such as login, registration, and access control, to their mobile apps. They commonly offer user management, identity verification, password reset, and other related capabilities.

This list is based on our analysis of the millions of mobile applications – and the 2,300+ SDKs they use – that constitute the vast inventory of the Google Play Store. The accompanying data provides readers with a glimpse into the rich mobile application insights generated by the 42matters technology. This data is also available via our APIs, file dumps, Explorer, and SDK Explorer.

The intended purpose of this article is to assist app builders in their search for the perfect User Authentication SDK to leverage in their app, as well as to give SDK developers insight into their biggest competitors and potential customers. This data collected by our technology may also serve as a useful tool for folks researching the wider mobile app market.

Among all apps utilizing user authentication SDKs, 75.14% have integrated Firebase Authentication. This accounts for 55.89% of app downloads within the user authentication SDK category.

Total Apps
338.40k
Google Play
App Share
75.14%
Google Play
Apps
318.32k
Games
20.08k
Total Downloads
229.90b
Google Play
Download Share
55.89%
Google Play
App Downloads
163.40b
Game Downloads
66.50b

Use the 42matters SDK Explorer to find all apps that use Firebase Authentication.

Among all apps utilizing user authentication SDKs, 38.35% have integrated Google reCAPTCHA. This accounts for 26.04% of app downloads within the user authentication SDK category.

Total Apps
172.73k
Google Play
App Share
38.35%
Google Play
Apps
161.09k
Games
11.64k
Total Downloads
107.10b
Google Play
Download Share
26.04%
Google Play
App Downloads
71.73b
Game Downloads
35.37b

Use the 42matters SDK Explorer to find all apps that use Google reCAPTCHA.

Among all apps utilizing user authentication SDKs, 9.53% have integrated Truecaller. This accounts for 3.71% of app downloads within the user authentication SDK category.

Total Apps
42.93k
Google Play
App Share
9.53%
Google Play
Apps
42.89k
Games
43
Total Downloads
15.25b
Google Play
Download Share
3.71%
Google Play
App Downloads
14.87b
Game Downloads
374.28m

Use the 42matters SDK Explorer to find all apps that use Truecaller.

Among all apps utilizing user authentication SDKs, 9.13% have integrated OTPless. This accounts for <1% of app downloads within the user authentication SDK category.

Total Apps
41.11k
Google Play
App Share
9.13%
Google Play
Apps
41.08k
Games
23
Total Downloads
1.84b
Google Play
Download Share
<1%
Google Play
App Downloads
1.79b
Game Downloads
46.80m

Use the 42matters SDK Explorer to find all apps that use OTPless.

Among all apps utilizing user authentication SDKs, 7.21% have integrated Amazon AWS Cognito Federated Identities. This accounts for 8.24% of app downloads within the user authentication SDK category.

Total Apps
32.49k
Google Play
App Share
7.21%
Google Play
Apps
32.11k
Games
385
Total Downloads
33.91b
Google Play
Download Share
8.24%
Google Play
App Downloads
25.21b
Game Downloads
8.70b

Use the 42matters SDK Explorer to find all apps that use Amazon AWS Cognito Federated Identities.

Among all apps utilizing user authentication SDKs, 6.63% have integrated AppAuth by OpenID. This accounts for 16.51% of app downloads within the user authentication SDK category.

AppAuth for Android is a client SDK for communicating with OAuth 2.0 and OpenID Connect providers. It strives to directly map the requests and responses of those specifications, while following the idiomatic style of the implementation language.

Total Apps
29.86k
Google Play
App Share
6.63%
Google Play
Apps
29.55k
Games
309
Total Downloads
67.93b
Google Play
Download Share
16.51%
Google Play
App Downloads
66.79b
Game Downloads
1.14b

Use the 42matters SDK Explorer to find all apps that use AppAuth by OpenID.

Among all apps utilizing user authentication SDKs, 3.77% have integrated Auth0. This accounts for 5.82% of app downloads within the user authentication SDK category.

Auth0 is an easy to implement, adaptable authentication and authorization platform. They make your login box awesome.

Total Apps
16.99k
Google Play
App Share
3.77%
Google Play
Apps
16.68k
Games
307
Total Downloads
23.93b
Google Play
Download Share
5.82%
Google Play
App Downloads
18.76b
Game Downloads
5.17b

Use the 42matters SDK Explorer to find all apps that use Auth0.

Among all apps utilizing user authentication SDKs, 1.36% have integrated Microsoft Authentication Library. This accounts for 7.21% of app downloads within the user authentication SDK category.

Total Apps
6.11k
Google Play
App Share
1.36%
Google Play
Apps
6.10k
Games
9
Total Downloads
29.64b
Google Play
Download Share
7.21%
Google Play
App Downloads
29.63b
Game Downloads
4.02m

Use the 42matters SDK Explorer to find all apps that use Microsoft Authentication Library.

Among all apps utilizing user authentication SDKs, 1.22% have integrated FingerprintJS. This accounts for <1% of app downloads within the user authentication SDK category.

Total Apps
5.48k
Google Play
App Share
1.22%
Google Play
Apps
5.43k
Games
51
Total Downloads
3.55b
Google Play
Download Share
<1%
Google Play
App Downloads
3.36b
Game Downloads
186.68m

Use the 42matters SDK Explorer to find all apps that use FingerprintJS.

Among all apps utilizing user authentication SDKs, 1.02% have integrated Mitek MiSnap. This accounts for <1% of app downloads within the user authentication SDK category.

Mitek MiSnap is a patented mobile capture SDK that enables an intuitive user experience and instant capture of quality images.

Total Apps
4.59k
Google Play
App Share
1.02%
Google Play
Apps
4.59k
Games
0
Total Downloads
1.62b
Google Play
Download Share
<1%
Google Play
App Downloads
1.62b
Game Downloads
257.99k

Use the 42matters SDK Explorer to find all apps that use Mitek MiSnap.

Among all apps utilizing user authentication SDKs, <1% have integrated Signpost. This accounts for 3.89% of app downloads within the user authentication SDK category.

Signpost is the easy and intuitive solution for signing HTTP messages on the Java platform in conformance with the OAuth Core 1.0a standard. The Signpost SDK follows a modular and flexible design, allowing you to combine it with different HTTP messaging layers.

Total Apps
2.22k
Google Play
App Share
<1%
Google Play
Apps
1.97k
Games
251
Total Downloads
15.99b
Google Play
Download Share
3.89%
Google Play
App Downloads
14.47b
Game Downloads
1.52b

Use the 42matters SDK Explorer to find all apps that use Signpost.

Among all apps utilizing user authentication SDKs, <1% have integrated FraudForce by iovation. This accounts for <1% of app downloads within the user authentication SDK category.

Total Apps
1.96k
Google Play
App Share
<1%
Google Play
Apps
1.96k
Games
3
Total Downloads
2.51b
Google Play
Download Share
<1%
Google Play
App Downloads
2.51b
Game Downloads
1.39m

Use the 42matters SDK Explorer to find all apps that use FraudForce by iovation.

Among all apps utilizing user authentication SDKs, <1% have integrated Facetec. This accounts for 1.25% of app downloads within the user authentication SDK category.

Total Apps
1.13k
Google Play
App Share
<1%
Google Play
Apps
1.07k
Games
63
Total Downloads
5.16b
Google Play
Download Share
1.25%
Google Play
App Downloads
5.05b
Game Downloads
111.99m

Use the 42matters SDK Explorer to find all apps that use Facetec.

Among all apps utilizing user authentication SDKs, <1% have integrated SumSub. This accounts for <1% of app downloads within the user authentication SDK category.

Total Apps
883
Google Play
App Share
<1%
Google Play
Apps
869
Games
14
Total Downloads
1.54b
Google Play
Download Share
<1%
Google Play
App Downloads
1.50b
Game Downloads
32.97m

Use the 42matters SDK Explorer to find all apps that use SumSub.

Among all apps utilizing user authentication SDKs, <1% have integrated iProov. This accounts for <1% of app downloads within the user authentication SDK category.

Total Apps
844
Google Play
App Share
<1%
Google Play
Apps
842
Games
2
Total Downloads
884.96m
Google Play
Download Share
<1%
Google Play
App Downloads
884.63m
Game Downloads
327.28k

Use the 42matters SDK Explorer to find all apps that use iProov.

Among all apps utilizing user authentication SDKs, <1% have integrated Regula Document Reader. This accounts for <1% of app downloads within the user authentication SDK category.

Regula is an OCR SDK for document data capture and text recognition. It enables id card scanning and passports and driving licenses on the go.

Total Apps
792
Google Play
App Share
<1%
Google Play
Apps
792
Games
0
Total Downloads
495.85m
Google Play
Download Share
<1%
Google Play
App Downloads
495.83m
Game Downloads
13.52k

Use the 42matters SDK Explorer to find all apps that use Regula Document Reader.

Among all apps utilizing user authentication SDKs, <1% have integrated Onfido Capture. This accounts for <1% of app downloads within the user authentication SDK category.

The Onfido Capture SDK is an AI-based technology that assesses whether a user’s government-issued ID is genuine or fraudulent. It then compares it against their facial biometrics.

Total Apps
694
Google Play
App Share
<1%
Google Play
Apps
680
Games
14
Total Downloads
1.39b
Google Play
Download Share
<1%
Google Play
App Downloads
1.39b
Game Downloads
2.55m

Use the 42matters SDK Explorer to find all apps that use Onfido Capture.

Among all apps utilizing user authentication SDKs, <1% have integrated Sinch. This accounts for <1% of app downloads within the user authentication SDK category.

Sinch is an SDK that enables developers to connect with customers and make engagement personal with simple, programmable SMS, voice, video, and verification tools.

Total Apps
651
Google Play
App Share
<1%
Google Play
Apps
650
Games
1
Total Downloads
708.35m
Google Play
Download Share
<1%
Google Play
App Downloads
707.58m
Game Downloads
769.16k

Use the 42matters SDK Explorer to find all apps that use Sinch.

Among all apps utilizing user authentication SDKs, <1% have integrated Okta. This accounts for <1% of app downloads within the user authentication SDK category.

Total Apps
611
Google Play
App Share
<1%
Google Play
Apps
611
Games
0
Total Downloads
148.79m
Google Play
Download Share
<1%
Google Play
App Downloads
148.62m
Game Downloads
169.51k

Use the 42matters SDK Explorer to find all apps that use Okta.

Among all apps utilizing user authentication SDKs, <1% have integrated Jumio Mobile. This accounts for <1% of app downloads within the user authentication SDK category.

Jumio Mobile offers an end-to-end ID, identity verification, and authentication solution SDK. It fights fraud, maintains compliance, and onboards good customers faster.

Total Apps
556
Google Play
App Share
<1%
Google Play
Apps
554
Games
2
Total Downloads
585.03m
Google Play
Download Share
<1%
Google Play
App Downloads
584.49m
Game Downloads
538.82k

Use the 42matters SDK Explorer to find all apps that use Jumio Mobile.

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Frequently Asked Questions (FAQs)

How does 42matters collect this data?'

We’ve developed a number of machine learning algorithms that scan millions of mobile and connected TV (CTV) applications on a regular basis. In addition, we collect ground truth app performance intelligence and use this data to build statistical models that estimate the performance of apps for which we do not have ground truth data.

What SDK data does 42matters collect?'

We track over 2,300 of the most popular SDKs integrated in iOS and Android apps. We collect a variety of SDK insights (title, platform, ID, category, and developer website); performance metrics (the number of apps that have installed each SDK, installation and removal trends, and app downloads); market share statistics (including market share per app category); and more!

How can I access 42matters’ SDK data?'

The most direct way is to use our SDK Explorer, which is a visual, web-based research platform that enables you to peruse all 2,300+ SDKs that we track. It’s great for market research, lead generation, competitor analysis, etc. However, more technically-inclined folks might prefer our APIs and File Dumps, which enable you to query info for specific apps or SDKs. You can also use our other research platform (the Explorer) to view integrated SDKs by app.

Can I use 42matters’ solutions to generate app publisher leads?'

Absolutely! We actually wrote about this on our blog. We focused on ad network SDKs, but the examples are applicable to most SDK types. To summarize, you can use the Explorer’s advanced filtering capabilities to home in on best-fit app publishers, leverage the SDK Explorer to see which apps use your competitors’ SDKs, and use our APIs and file dumps to build custom lead generation processes.

What data does 42matters provide on mobile apps?'

A ton! We track 17+ million apps across Google Play, the Apple App Store, Amazon Appstore, Tencent Appstore, and Huawei AppGallery. Our solutions provide access to app details (developer insights, metadata, ASO keywords, contact information, etc.); performance metrics (downloads, MAUs, ratings, reviews, top chart rankings, etc.); technical insights (integrated SDKs, permissions, required capabilities, etc.); content details (categories, genres, IAB categories, content ratings, etc.); compliance information (app-ads.txt, privacy policies, store status, etc.) and much, much more!

Can I use 42matters’ solutions to find SDKs for my app?'

Definitely. The SDK Explorer enables you to sort SDKs by category, identify similar SDKs, analyze SDK reliability, and more. In addition, you can use the Explorer to monitor your competitors, including which SDKs they add and remove, their current tech stacks, and SDK changelogs. This means you use our solutions not only to find the right SDK for a particular purpose, but also which SDKs you might need to keep up with your rivals.