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Top 20 User Authentication SDKs Used in Android Apps on Google Play
Last update: 1 Nov 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, 73.43% have integrated Firebase Authentication. This accounts for 52.18% of app downloads within the user authentication SDK category.

Total Apps
415.72k
Google Play
App Share
73.43%
Google Play
Apps
384.17k
Games
31.55k
Total Downloads
274.13b
Google Play
Download Share
52.18%
Google Play
App Downloads
201.55b
Game Downloads
72.59b

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

Among all apps utilizing user authentication SDKs, 54.14% have integrated Google reCAPTCHA. This accounts for 28.03% of app downloads within the user authentication SDK category.

Total Apps
306.49k
Google Play
App Share
54.14%
Google Play
Apps
281.52k
Games
24.97k
Total Downloads
147.27b
Google Play
Download Share
28.03%
Google Play
App Downloads
97.95b
Game Downloads
49.32b

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

Among all apps utilizing user authentication SDKs, 7.53% have integrated Truecaller. This accounts for 3.59% of app downloads within the user authentication SDK category.

Total Apps
42.62k
Google Play
App Share
7.53%
Google Play
Apps
42.58k
Games
36
Total Downloads
18.83b
Google Play
Download Share
3.59%
Google Play
App Downloads
18.25b
Game Downloads
588.59m

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

Among all apps utilizing user authentication SDKs, 7.39% have integrated AppAuth by OpenID. This accounts for 18.84% 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
41.86k
Google Play
App Share
7.39%
Google Play
Apps
41.44k
Games
421
Total Downloads
98.98b
Google Play
Download Share
18.84%
Google Play
App Downloads
97.50b
Game Downloads
1.48b

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

Among all apps utilizing user authentication SDKs, 7.13% have integrated OTPless. This accounts for <1% of app downloads within the user authentication SDK category.

Total Apps
40.36k
Google Play
App Share
7.13%
Google Play
Apps
40.34k
Games
20
Total Downloads
939.53m
Google Play
Download Share
<1%
Google Play
App Downloads
861.06m
Game Downloads
78.48m

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

Among all apps utilizing user authentication SDKs, 5.12% have integrated Amazon AWS Cognito Federated Identities. This accounts for 6.95% of app downloads within the user authentication SDK category.

Total Apps
28.98k
Google Play
App Share
5.12%
Google Play
Apps
28.69k
Games
288
Total Downloads
36.50b
Google Play
Download Share
6.95%
Google Play
App Downloads
28.26b
Game Downloads
8.24b

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

Among all apps utilizing user authentication SDKs, 5.08% have integrated Auth0. This accounts for 6.32% 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
28.74k
Google Play
App Share
5.08%
Google Play
Apps
27.72k
Games
1.02k
Total Downloads
33.20b
Google Play
Download Share
6.32%
Google Play
App Downloads
26.99b
Game Downloads
6.21b

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

Among all apps utilizing user authentication SDKs, 1.87% have integrated FingerprintJS. This accounts for 1.78% of app downloads within the user authentication SDK category.

Total Apps
10.57k
Google Play
App Share
1.87%
Google Play
Apps
10.44k
Games
126
Total Downloads
9.35b
Google Play
Download Share
1.78%
Google Play
App Downloads
8.62b
Game Downloads
726.73m

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

Among all apps utilizing user authentication SDKs, 1.46% have integrated Microsoft Authentication Library. This accounts for 7.19% of app downloads within the user authentication SDK category.

Total Apps
8.26k
Google Play
App Share
1.46%
Google Play
Apps
8.25k
Games
7
Total Downloads
37.75b
Google Play
Download Share
7.19%
Google Play
App Downloads
37.74b
Game Downloads
4.37m

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
4.37k
Google Play
App Share
<1%
Google Play
Apps
4.37k
Games
0
Total Downloads
1.93b
Google Play
Download Share
<1%
Google Play
App Downloads
1.93b
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
3.74k
Google Play
App Share
<1%
Google Play
Apps
3.72k
Games
14
Total Downloads
686.09m
Google Play
Download Share
<1%
Google Play
App Downloads
679.62m
Game Downloads
6.46m

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 3.92% 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
3.08k
Google Play
App Share
<1%
Google Play
Apps
1.63k
Games
1.45k
Total Downloads
20.58b
Google Play
Download Share
3.92%
Google Play
App Downloads
18.57b
Game Downloads
2.01b

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
1.61k
Google Play
App Share
<1%
Google Play
Apps
1.60k
Games
5
Total Downloads
3.34b
Google Play
Download Share
<1%
Google Play
App Downloads
3.34b
Game Downloads
954.26k

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
1.45k
Google Play
App Share
<1%
Google Play
Apps
1.43k
Games
18
Total Downloads
2.20b
Google Play
Download Share
<1%
Google Play
App Downloads
2.17b
Game Downloads
36.57m

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

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
1.35k
Google Play
App Share
<1%
Google Play
Apps
1.35k
Games
0
Total Downloads
914.04m
Google Play
Download Share
<1%
Google Play
App Downloads
914.02m
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 Facetec. This accounts for 1.49% of app downloads within the user authentication SDK category.

Total Apps
1.15k
Google Play
App Share
<1%
Google Play
Apps
1.06k
Games
88
Total Downloads
7.85b
Google Play
Download Share
1.49%
Google Play
App Downloads
7.67b
Game Downloads
186.18m

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

Among all apps utilizing user authentication SDKs, <1% have integrated Huawei HMS Account Kit. This accounts for 1.77% of app downloads within the user authentication SDK category.

Total Apps
995
Google Play
App Share
<1%
Google Play
Apps
932
Games
63
Total Downloads
9.30b
Google Play
Download Share
1.77%
Google Play
App Downloads
8.99b
Game Downloads
313.33m

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 iProov. This accounts for <1% of app downloads within the user authentication SDK category.

Total Apps
945
Google Play
App Share
<1%
Google Play
Apps
941
Games
4
Total Downloads
2.97b
Google Play
Download Share
<1%
Google Play
App Downloads
2.97b
Game Downloads
809.30k

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

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
713
Google Play
App Share
<1%
Google Play
Apps
697
Games
16
Total Downloads
1.64b
Google Play
Download Share
<1%
Google Play
App Downloads
1.64b
Game Downloads
3.40m

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
686
Google Play
App Share
<1%
Google Play
Apps
686
Games
0
Total Downloads
146.64m
Google Play
Download Share
<1%
Google Play
App Downloads
146.47m
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.