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Top 20 User Authentication SDKs Used in Android Apps on Google Play
Last update: 7 Jul 2026 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, 73.73% have integrated Firebase Authentication. This accounts for 52.12% of app downloads within the user authentication SDK category.

Total Apps
390.13k
Google Play
App Share
73.73%
Google Play
Apps
365.13k
Games
25.00k
Total Downloads
274.88b
Google Play
Download Share
52.12%
Google Play
App Downloads
202.85b
Game Downloads
72.02b

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

Among all apps utilizing user authentication SDKs, 50.16% have integrated Google reCAPTCHA. This accounts for 28.79% of app downloads within the user authentication SDK category.

Total Apps
265.40k
Google Play
App Share
50.16%
Google Play
Apps
247.08k
Games
18.33k
Total Downloads
151.83b
Google Play
Download Share
28.79%
Google Play
App Downloads
105.17b
Game Downloads
46.65b

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

Among all apps utilizing user authentication SDKs, 8.06% have integrated Truecaller. This accounts for 3.65% of app downloads within the user authentication SDK category.

Total Apps
42.67k
Google Play
App Share
8.06%
Google Play
Apps
42.63k
Games
36
Total Downloads
19.22b
Google Play
Download Share
3.65%
Google Play
App Downloads
18.65b
Game Downloads
570.38m

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

Among all apps utilizing user authentication SDKs, 7.67% have integrated OTPless. This accounts for <1% of app downloads within the user authentication SDK category.

Total Apps
40.58k
Google Play
App Share
7.67%
Google Play
Apps
40.55k
Games
23
Total Downloads
1.96b
Google Play
Download Share
<1%
Google Play
App Downloads
1.88b
Game Downloads
78.60m

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

Among all apps utilizing user authentication SDKs, 7.26% have integrated AppAuth by OpenID. This accounts for 17.89% 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
38.40k
Google Play
App Share
7.26%
Google Play
Apps
38.06k
Games
337
Total Downloads
94.36b
Google Play
Download Share
17.89%
Google Play
App Downloads
93.00b
Game Downloads
1.36b

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

Among all apps utilizing user authentication SDKs, 5.61% have integrated Amazon AWS Cognito Federated Identities. This accounts for 7.31% of app downloads within the user authentication SDK category.

Total Apps
29.69k
Google Play
App Share
5.61%
Google Play
Apps
29.39k
Games
309
Total Downloads
38.56b
Google Play
Download Share
7.31%
Google Play
App Downloads
28.76b
Game Downloads
9.80b

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

Among all apps utilizing user authentication SDKs, 4.59% have integrated Auth0. This accounts for 6.19% 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
24.31k
Google Play
App Share
4.59%
Google Play
Apps
23.72k
Games
589
Total Downloads
32.66b
Google Play
Download Share
6.19%
Google Play
App Downloads
26.63b
Game Downloads
6.03b

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

Among all apps utilizing user authentication SDKs, 1.84% have integrated FingerprintJS. This accounts for 1.38% of app downloads within the user authentication SDK category.

Total Apps
9.74k
Google Play
App Share
1.84%
Google Play
Apps
9.64k
Games
105
Total Downloads
7.30b
Google Play
Download Share
1.38%
Google Play
App Downloads
7.06b
Game Downloads
245.39m

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

Among all apps utilizing user authentication SDKs, 1.47% have integrated Microsoft Authentication Library. This accounts for 6.88% of app downloads within the user authentication SDK category.

Total Apps
7.80k
Google Play
App Share
1.47%
Google Play
Apps
7.79k
Games
9
Total Downloads
36.30b
Google Play
Download Share
6.88%
Google Play
App Downloads
36.29b
Game Downloads
4.36m

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

Among all apps utilizing user authentication SDKs, <1% 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
4.39k
Google Play
App Share
<1%
Google Play
Apps
4.39k
Games
0
Total Downloads
1.92b
Google Play
Download Share
<1%
Google Play
App Downloads
1.92b
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 Kount by Equifax. This accounts for <1% of app downloads within the user authentication SDK category.

Total Apps
3.93k
Google Play
App Share
<1%
Google Play
Apps
3.93k
Games
3
Total Downloads
655.72m
Google Play
Download Share
<1%
Google Play
App Downloads
655.37m
Game Downloads
351.73k

Use the 42matters SDK Explorer to find all apps that use Kount by Equifax.

Among all apps utilizing user authentication SDKs, <1% have integrated Signpost. This accounts for 4.00% 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
3.61k
Google Play
App Share
<1%
Google Play
Apps
1.79k
Games
1.82k
Total Downloads
21.09b
Google Play
Download Share
4.00%
Google Play
App Downloads
18.45b
Game Downloads
2.64b

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
1.67k
Google Play
App Share
<1%
Google Play
Apps
1.66k
Games
5
Total Downloads
2.87b
Google Play
Download Share
<1%
Google Play
App Downloads
2.87b
Game Downloads
668.71k

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

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
1.30k
Google Play
App Share
<1%
Google Play
Apps
1.29k
Games
14
Total Downloads
2.02b
Google Play
Download Share
<1%
Google Play
App Downloads
1.98b
Game Downloads
34.88m

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

Among all apps utilizing user authentication SDKs, <1% have integrated Facetec. This accounts for 1.36% of app downloads within the user authentication SDK category.

Total Apps
1.25k
Google Play
App Share
<1%
Google Play
Apps
1.18k
Games
66
Total Downloads
7.17b
Google Play
Download Share
1.36%
Google Play
App Downloads
7.03b
Game Downloads
135.51m

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

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
1.23k
Google Play
App Share
<1%
Google Play
Apps
1.23k
Games
0
Total Downloads
874.72m
Google Play
Download Share
<1%
Google Play
App Downloads
874.71m
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 iProov. This accounts for <1% of app downloads within the user authentication SDK category.

Total Apps
1.07k
Google Play
App Share
<1%
Google Play
Apps
1.06k
Games
6
Total Downloads
2.20b
Google Play
Download Share
<1%
Google Play
App Downloads
2.20b
Game Downloads
997.26k

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

Among all apps utilizing user authentication SDKs, <1% have integrated Huawei HMS Account Kit. This accounts for 1.72% of app downloads within the user authentication SDK category.

Total Apps
931
Google Play
App Share
<1%
Google Play
Apps
895
Games
36
Total Downloads
9.07b
Google Play
Download Share
1.72%
Google Play
App Downloads
8.80b
Game Downloads
270.71m

Use the 42matters SDK Explorer to find all apps that use Huawei HMS Account Kit.

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
698
Google Play
App Share
<1%
Google Play
Apps
682
Games
16
Total Downloads
1.63b
Google Play
Download Share
<1%
Google Play
App Downloads
1.63b
Game Downloads
3.35m

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

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
667
Google Play
App Share
<1%
Google Play
Apps
667
Games
0
Total Downloads
166.64m
Google Play
Download Share
<1%
Google Play
App Downloads
166.47m
Game Downloads
169.51k

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

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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.