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Top 20 User Authentication SDKs Used in Android Apps on Google Play
Last update: 29 Apr 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, 73.76% have integrated Firebase Authentication. This accounts for 52.62% of app downloads within the user authentication SDK category.

Total Apps
378.65k
Google Play
App Share
73.76%
Google Play
Apps
353.20k
Games
25.45k
Total Downloads
271.61b
Google Play
Download Share
52.62%
Google Play
App Downloads
200.30b
Game Downloads
71.31b

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

Among all apps utilizing user authentication SDKs, 48.95% have integrated Google reCAPTCHA. This accounts for 28.36% of app downloads within the user authentication SDK category.

Total Apps
251.29k
Google Play
App Share
48.95%
Google Play
Apps
233.45k
Games
17.84k
Total Downloads
146.40b
Google Play
Download Share
28.36%
Google Play
App Downloads
100.96b
Game Downloads
45.44b

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

Among all apps utilizing user authentication SDKs, 8.32% have integrated Truecaller. This accounts for 3.64% of app downloads within the user authentication SDK category.

Total Apps
42.69k
Google Play
App Share
8.32%
Google Play
Apps
42.65k
Games
39
Total Downloads
18.77b
Google Play
Download Share
3.64%
Google Play
App Downloads
18.20b
Game Downloads
563.25m

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

Among all apps utilizing user authentication SDKs, 7.92% have integrated OTPless. This accounts for <1% of app downloads within the user authentication SDK category.

Total Apps
40.68k
Google Play
App Share
7.92%
Google Play
Apps
40.65k
Games
26
Total Downloads
1.91b
Google Play
Download Share
<1%
Google Play
App Downloads
1.83b
Game Downloads
76.89m

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

Among all apps utilizing user authentication SDKs, 7.30% have integrated AppAuth by OpenID. This accounts for 17.87% 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
37.47k
Google Play
App Share
7.30%
Google Play
Apps
37.17k
Games
298
Total Downloads
92.26b
Google Play
Download Share
17.87%
Google Play
App Downloads
90.92b
Game Downloads
1.34b

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

Among all apps utilizing user authentication SDKs, 5.78% have integrated Amazon AWS Cognito Federated Identities. This accounts for 7.29% of app downloads within the user authentication SDK category.

Total Apps
29.69k
Google Play
App Share
5.78%
Google Play
Apps
29.31k
Games
380
Total Downloads
37.62b
Google Play
Download Share
7.29%
Google Play
App Downloads
27.75b
Game Downloads
9.86b

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

Among all apps utilizing user authentication SDKs, 4.39% have integrated Auth0. This accounts for 6.21% 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
22.52k
Google Play
App Share
4.39%
Google Play
Apps
22.00k
Games
522
Total Downloads
32.08b
Google Play
Download Share
6.21%
Google Play
App Downloads
26.13b
Game Downloads
5.95b

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

Among all apps utilizing user authentication SDKs, 1.83% have integrated FingerprintJS. This accounts for 1.34% of app downloads within the user authentication SDK category.

Total Apps
9.40k
Google Play
App Share
1.83%
Google Play
Apps
9.29k
Games
103
Total Downloads
6.90b
Google Play
Download Share
1.34%
Google Play
App Downloads
6.63b
Game Downloads
266.00m

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

Among all apps utilizing user authentication SDKs, 1.48% have integrated Microsoft Authentication Library. This accounts for 7.20% of app downloads within the user authentication SDK category.

Total Apps
7.61k
Google Play
App Share
1.48%
Google Play
Apps
7.60k
Games
11
Total Downloads
37.16b
Google Play
Download Share
7.20%
Google Play
App Downloads
37.16b
Game Downloads
4.35m

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
4.40k
Google Play
App Share
<1%
Google Play
Apps
4.40k
Games
0
Total Downloads
1.88b
Google Play
Download Share
<1%
Google Play
App Downloads
1.88b
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
3.94k
Google Play
App Share
<1%
Google Play
Apps
3.94k
Games
2
Total Downloads
654.96m
Google Play
Download Share
<1%
Google Play
App Downloads
654.62m
Game Downloads
334.64k

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 3.90% 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
2.37k
Google Play
App Share
<1%
Google Play
Apps
1.78k
Games
588
Total Downloads
20.12b
Google Play
Download Share
3.90%
Google Play
App Downloads
17.55b
Game Downloads
2.57b

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
1.69k
Google Play
App Share
<1%
Google Play
Apps
1.69k
Games
6
Total Downloads
2.74b
Google Play
Download Share
<1%
Google Play
App Downloads
2.74b
Game Downloads
1.82m

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 1.41% of app downloads within the user authentication SDK category.

Total Apps
1.28k
Google Play
App Share
<1%
Google Play
Apps
1.20k
Games
77
Total Downloads
7.27b
Google Play
Download Share
1.41%
Google Play
App Downloads
7.15b
Game Downloads
125.56m

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
1.24k
Google Play
App Share
<1%
Google Play
Apps
1.22k
Games
18
Total Downloads
1.88b
Google Play
Download Share
<1%
Google Play
App Downloads
1.84b
Game Downloads
34.64m

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
1.17k
Google Play
App Share
<1%
Google Play
Apps
1.17k
Games
0
Total Downloads
678.77m
Google Play
Download Share
<1%
Google Play
App Downloads
678.76m
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
1.13k
Google Play
App Share
<1%
Google Play
Apps
1.12k
Games
6
Total Downloads
1.96b
Google Play
Download Share
<1%
Google Play
App Downloads
1.96b
Game Downloads
904.23k

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 1.74% of app downloads within the user authentication SDK category.

Total Apps
907
Google Play
App Share
<1%
Google Play
Apps
876
Games
31
Total Downloads
8.99b
Google Play
Download Share
1.74%
Google Play
App Downloads
8.72b
Game Downloads
276.39m

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
706
Google Play
App Share
<1%
Google Play
Apps
690
Games
16
Total Downloads
1.61b
Google Play
Download Share
<1%
Google Play
App Downloads
1.61b
Game Downloads
3.24m

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
653
Google Play
App Share
<1%
Google Play
Apps
653
Games
0
Total Downloads
184.22m
Google Play
Download Share
<1%
Google Play
App Downloads
184.05m
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.