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Top 20 User Authentication SDKs Used in Android Apps on Google Play
Last update: 27 Jul 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, 75.05% have integrated Firebase Authentication. This accounts for 55.52% of app downloads within the user authentication SDK category.

Total Apps
338.39k
Google Play
App Share
75.05%
Google Play
Apps
317.52k
Games
20.87k
Total Downloads
236.82b
Google Play
Download Share
55.52%
Google Play
App Downloads
168.69b
Game Downloads
68.13b

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

Among all apps utilizing user authentication SDKs, 40.84% have integrated Google reCAPTCHA. This accounts for 26.93% of app downloads within the user authentication SDK category.

Total Apps
184.14k
Google Play
App Share
40.84%
Google Play
Apps
171.36k
Games
12.79k
Total Downloads
114.85b
Google Play
Download Share
26.93%
Google Play
App Downloads
77.25b
Game Downloads
37.60b

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

Among all apps utilizing user authentication SDKs, 9.54% have integrated Truecaller. This accounts for 3.93% of app downloads within the user authentication SDK category.

Total Apps
42.99k
Google Play
App Share
9.54%
Google Play
Apps
42.95k
Games
47
Total Downloads
16.77b
Google Play
Download Share
3.93%
Google Play
App Downloads
16.35b
Game Downloads
416.51m

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

Among all apps utilizing user authentication SDKs, 9.10% have integrated OTPless. This accounts for <1% of app downloads within the user authentication SDK category.

Total Apps
41.03k
Google Play
App Share
9.10%
Google Play
Apps
41.00k
Games
25
Total Downloads
1.72b
Google Play
Download Share
<1%
Google Play
App Downloads
1.66b
Game Downloads
60.18m

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

Among all apps utilizing user authentication SDKs, 7.04% have integrated Amazon AWS Cognito Federated Identities. This accounts for 8.14% of app downloads within the user authentication SDK category.

Total Apps
31.76k
Google Play
App Share
7.04%
Google Play
Apps
31.42k
Games
344
Total Downloads
34.71b
Google Play
Download Share
8.14%
Google Play
App Downloads
25.82b
Game Downloads
8.88b

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

Among all apps utilizing user authentication SDKs, 6.71% have integrated AppAuth by OpenID. This accounts for 16.62% 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
30.24k
Google Play
App Share
6.71%
Google Play
Apps
29.95k
Games
292
Total Downloads
70.87b
Google Play
Download Share
16.62%
Google Play
App Downloads
69.64b
Game Downloads
1.23b

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

Among all apps utilizing user authentication SDKs, 3.97% have integrated Auth0. This accounts for 5.93% 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
17.91k
Google Play
App Share
3.97%
Google Play
Apps
17.57k
Games
343
Total Downloads
25.31b
Google Play
Download Share
5.93%
Google Play
App Downloads
19.96b
Game Downloads
5.35b

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

Among all apps utilizing user authentication SDKs, 1.38% have integrated Microsoft Authentication Library. This accounts for 7.21% of app downloads within the user authentication SDK category.

Total Apps
6.24k
Google Play
App Share
1.38%
Google Play
Apps
6.23k
Games
9
Total Downloads
30.74b
Google Play
Download Share
7.21%
Google Play
App Downloads
30.74b
Game Downloads
4.06m

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

Among all apps utilizing user authentication SDKs, 1.24% have integrated FingerprintJS. This accounts for 1.01% of app downloads within the user authentication SDK category.

Total Apps
5.61k
Google Play
App Share
1.24%
Google Play
Apps
5.54k
Games
72
Total Downloads
4.32b
Google Play
Download Share
1.01%
Google Play
App Downloads
4.08b
Game Downloads
231.79m

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

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
4.50k
Google Play
App Share
<1%
Google Play
Apps
4.50k
Games
0
Total Downloads
1.66b
Google Play
Download Share
<1%
Google Play
App Downloads
1.66b
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 4.16% 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
2.15k
Google Play
App Share
<1%
Google Play
Apps
1.86k
Games
289
Total Downloads
17.74b
Google Play
Download Share
4.16%
Google Play
App Downloads
15.24b
Game Downloads
2.51b

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
1.92k
Google Play
App Share
<1%
Google Play
Apps
1.92k
Games
4
Total Downloads
2.69b
Google Play
Download Share
<1%
Google Play
App Downloads
2.69b
Game Downloads
1.60m

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 1.27% of app downloads within the user authentication SDK category.

Total Apps
1.20k
Google Play
App Share
<1%
Google Play
Apps
1.11k
Games
86
Total Downloads
5.43b
Google Play
Download Share
1.27%
Google Play
App Downloads
5.32b
Game Downloads
109.80m

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
972
Google Play
App Share
<1%
Google Play
Apps
957
Games
15
Total Downloads
1.62b
Google Play
Download Share
<1%
Google Play
App Downloads
1.59b
Game Downloads
33.12m

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
887
Google Play
App Share
<1%
Google Play
Apps
887
Games
0
Total Downloads
547.48m
Google Play
Download Share
<1%
Google Play
App Downloads
547.46m
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
877
Google Play
App Share
<1%
Google Play
Apps
874
Games
3
Total Downloads
944.47m
Google Play
Download Share
<1%
Google Play
App Downloads
943.90m
Game Downloads
565.23k

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
707
Google Play
App Share
<1%
Google Play
Apps
692
Games
15
Total Downloads
1.45b
Google Play
Download Share
<1%
Google Play
App Downloads
1.45b
Game Downloads
2.75m

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
610
Google Play
App Share
<1%
Google Play
Apps
603
Games
7
Total Downloads
689.45m
Google Play
Download Share
<1%
Google Play
App Downloads
688.62m
Game Downloads
822.03k

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
606
Google Play
App Share
<1%
Google Play
Apps
606
Games
0
Total Downloads
155.46m
Google Play
Download Share
<1%
Google Play
App Downloads
155.29m
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
546
Google Play
App Share
<1%
Google Play
Apps
543
Games
3
Total Downloads
617.92m
Google Play
Download Share
<1%
Google Play
App Downloads
617.15m
Game Downloads
776.77k

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.