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Top 20 User Authentication SDKs Used in Android Apps on Google Play
Last update: 28 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, 73.78% have integrated Firebase Authentication. This accounts for 52.28% of app downloads within the user authentication SDK category.

Total Apps
395.08k
Google Play
App Share
73.78%
Google Play
Apps
369.17k
Games
25.90k
Total Downloads
277.21b
Google Play
Download Share
52.28%
Google Play
App Downloads
204.83b
Game Downloads
72.38b

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

Among all apps utilizing user authentication SDKs, 50.69% have integrated Google reCAPTCHA. This accounts for 28.98% of app downloads within the user authentication SDK category.

Total Apps
271.43k
Google Play
App Share
50.69%
Google Play
Apps
252.27k
Games
19.16k
Total Downloads
153.64b
Google Play
Download Share
28.98%
Google Play
App Downloads
106.60b
Game Downloads
47.03b

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

Among all apps utilizing user authentication SDKs, 7.96% have integrated Truecaller. This accounts for 3.37% of app downloads within the user authentication SDK category.

Total Apps
42.64k
Google Play
App Share
7.96%
Google Play
Apps
42.61k
Games
37
Total Downloads
17.86b
Google Play
Download Share
3.37%
Google Play
App Downloads
17.28b
Game Downloads
573.51m

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

Among all apps utilizing user authentication SDKs, 7.56% have integrated OTPless. This accounts for <1% of app downloads within the user authentication SDK category.

Total Apps
40.51k
Google Play
App Share
7.56%
Google Play
Apps
40.49k
Games
23
Total Downloads
1.98b
Google Play
Download Share
<1%
Google Play
App Downloads
1.90b
Game Downloads
79.24m

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

Among all apps utilizing user authentication SDKs, 7.24% have integrated AppAuth by OpenID. This accounts for 17.98% 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
38.79k
Google Play
App Share
7.24%
Google Play
Apps
38.45k
Games
340
Total Downloads
95.33b
Google Play
Download Share
17.98%
Google Play
App Downloads
93.96b
Game Downloads
1.37b

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

Among all apps utilizing user authentication SDKs, 5.54% have integrated Amazon AWS Cognito Federated Identities. This accounts for 7.29% of app downloads within the user authentication SDK category.

Total Apps
29.67k
Google Play
App Share
5.54%
Google Play
Apps
29.36k
Games
308
Total Downloads
38.67b
Google Play
Download Share
7.29%
Google Play
App Downloads
28.89b
Game Downloads
9.78b

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

Among all apps utilizing user authentication SDKs, 4.67% have integrated Auth0. This accounts for 6.23% 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
24.98k
Google Play
App Share
4.67%
Google Play
Apps
24.36k
Games
629
Total Downloads
33.02b
Google Play
Download Share
6.23%
Google Play
App Downloads
26.95b
Game Downloads
6.07b

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

Among all apps utilizing user authentication SDKs, 1.82% have integrated FingerprintJS. This accounts for 1.41% of app downloads within the user authentication SDK category.

Total Apps
9.76k
Google Play
App Share
1.82%
Google Play
Apps
9.65k
Games
107
Total Downloads
7.48b
Google Play
Download Share
1.41%
Google Play
App Downloads
7.23b
Game Downloads
248.93m

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

Among all apps utilizing user authentication SDKs, 1.45% have integrated Microsoft Authentication Library. This accounts for 6.90% of app downloads within the user authentication SDK category.

Total Apps
7.78k
Google Play
App Share
1.45%
Google Play
Apps
7.77k
Games
9
Total Downloads
36.61b
Google Play
Download Share
6.90%
Google Play
App Downloads
36.61b
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
1.93b
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
3.88k
Google Play
App Share
<1%
Google Play
Apps
3.87k
Games
5
Total Downloads
660.21m
Google Play
Download Share
<1%
Google Play
App Downloads
659.80m
Game Downloads
401.24k

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
3.65k
Google Play
App Share
<1%
Google Play
Apps
1.70k
Games
1.95k
Total Downloads
21.21b
Google Play
Download Share
4.00%
Google Play
App Downloads
18.63b
Game Downloads
2.58b

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
1.66k
Google Play
App Share
<1%
Google Play
Apps
1.65k
Games
5
Total Downloads
2.89b
Google Play
Download Share
<1%
Google Play
App Downloads
2.89b
Game Downloads
691.72k

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
1.32k
Google Play
App Share
<1%
Google Play
Apps
1.31k
Games
13
Total Downloads
2.04b
Google Play
Download Share
<1%
Google Play
App Downloads
2.00b
Game Downloads
34.97m

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
1.27k
Google Play
App Share
<1%
Google Play
Apps
1.27k
Games
0
Total Downloads
892.07m
Google Play
Download Share
<1%
Google Play
App Downloads
892.06m
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 1.36% of app downloads within the user authentication SDK category.

Total Apps
1.22k
Google Play
App Share
<1%
Google Play
Apps
1.15k
Games
74
Total Downloads
7.20b
Google Play
Download Share
1.36%
Google Play
App Downloads
7.05b
Game Downloads
147.61m

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

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
1.05k
Google Play
App Share
<1%
Google Play
Apps
1.04k
Games
6
Total Downloads
2.22b
Google Play
Download Share
<1%
Google Play
App Downloads
2.22b
Game Downloads
1.04m

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
937
Google Play
App Share
<1%
Google Play
Apps
887
Games
50
Total Downloads
9.10b
Google Play
Download Share
1.72%
Google Play
App Downloads
8.83b
Game Downloads
273.86m

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
1.64b
Google Play
Download Share
<1%
Google Play
App Downloads
1.64b
Game Downloads
3.39m

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
666
Google Play
App Share
<1%
Google Play
Apps
666
Games
0
Total Downloads
168.90m
Google Play
Download Share
<1%
Google Play
App Downloads
168.73m
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.