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Top 20 User Authentication SDKs Used in Android Apps on Google Play
Last update: 7 Sep 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, 74.66% have integrated Firebase Authentication. This accounts for 55.10% of app downloads within the user authentication SDK category.

Total Apps
337.40k
Google Play
App Share
74.66%
Google Play
Apps
316.23k
Games
21.18k
Total Downloads
237.15b
Google Play
Download Share
55.10%
Google Play
App Downloads
169.77b
Game Downloads
67.39b

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

Among all apps utilizing user authentication SDKs, 41.64% have integrated Google reCAPTCHA. This accounts for 27.48% of app downloads within the user authentication SDK category.

Total Apps
188.18k
Google Play
App Share
41.64%
Google Play
Apps
174.84k
Games
13.34k
Total Downloads
118.29b
Google Play
Download Share
27.48%
Google Play
App Downloads
79.74b
Game Downloads
38.55b

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

Among all apps utilizing user authentication SDKs, 9.45% have integrated Truecaller. This accounts for 4.00% of app downloads within the user authentication SDK category.

Total Apps
42.73k
Google Play
App Share
9.45%
Google Play
Apps
42.69k
Games
40
Total Downloads
17.20b
Google Play
Download Share
4.00%
Google Play
App Downloads
16.83b
Game Downloads
368.79m

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

Among all apps utilizing user authentication SDKs, 9.06% have integrated OTPless. This accounts for <1% of app downloads within the user authentication SDK category.

Total Apps
40.96k
Google Play
App Share
9.06%
Google Play
Apps
40.94k
Games
22
Total Downloads
1.76b
Google Play
Download Share
<1%
Google Play
App Downloads
1.76b
Game Downloads
6.63m

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

Among all apps utilizing user authentication SDKs, 7.07% have integrated AppAuth by OpenID. This accounts for 16.75% 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
31.94k
Google Play
App Share
7.07%
Google Play
Apps
31.65k
Games
287
Total Downloads
72.10b
Google Play
Download Share
16.75%
Google Play
App Downloads
70.84b
Game Downloads
1.26b

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

Among all apps utilizing user authentication SDKs, 6.87% have integrated Amazon AWS Cognito Federated Identities. This accounts for 8.06% of app downloads within the user authentication SDK category.

Total Apps
31.06k
Google Play
App Share
6.87%
Google Play
Apps
30.72k
Games
340
Total Downloads
34.70b
Google Play
Download Share
8.06%
Google Play
App Downloads
25.75b
Game Downloads
8.95b

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

Among all apps utilizing user authentication SDKs, 4.07% have integrated Auth0. This accounts for 6.02% 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
18.41k
Google Play
App Share
4.07%
Google Play
Apps
18.05k
Games
360
Total Downloads
25.89b
Google Play
Download Share
6.02%
Google Play
App Downloads
20.46b
Game Downloads
5.43b

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

Among all apps utilizing user authentication SDKs, 1.41% have integrated Microsoft Authentication Library. This accounts for 7.25% of app downloads within the user authentication SDK category.

Total Apps
6.37k
Google Play
App Share
1.41%
Google Play
Apps
6.36k
Games
9
Total Downloads
31.19b
Google Play
Download Share
7.25%
Google Play
App Downloads
31.19b
Game Downloads
4.07m

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

Among all apps utilizing user authentication SDKs, 1.25% have integrated FingerprintJS. This accounts for 1.07% of app downloads within the user authentication SDK category.

Total Apps
5.63k
Google Play
App Share
1.25%
Google Play
Apps
5.56k
Games
75
Total Downloads
4.59b
Google Play
Download Share
1.07%
Google Play
App Downloads
4.41b
Game Downloads
184.66m

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
4.49k
Google Play
App Share
<1%
Google Play
Apps
4.49k
Games
1
Total Downloads
1.70b
Google Play
Download Share
<1%
Google Play
App Downloads
1.70b
Game Downloads
798.75k

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 4.23% 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
2.12k
Google Play
App Share
<1%
Google Play
Apps
1.83k
Games
293
Total Downloads
18.20b
Google Play
Download Share
4.23%
Google Play
App Downloads
15.47b
Game Downloads
2.73b

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
1.91k
Google Play
App Share
<1%
Google Play
Apps
1.91k
Games
3
Total Downloads
2.70b
Google Play
Download Share
<1%
Google Play
App Downloads
2.70b
Game Downloads
1.62m

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 1.29% of app downloads within the user authentication SDK category.

Total Apps
1.21k
Google Play
App Share
<1%
Google Play
Apps
1.11k
Games
95
Total Downloads
5.56b
Google Play
Download Share
1.29%
Google Play
App Downloads
5.45b
Game Downloads
111.69m

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
994
Google Play
App Share
<1%
Google Play
Apps
978
Games
16
Total Downloads
1.64b
Google Play
Download Share
<1%
Google Play
App Downloads
1.61b
Game Downloads
33.28m

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
911
Google Play
App Share
<1%
Google Play
Apps
911
Games
0
Total Downloads
563.13m
Google Play
Download Share
<1%
Google Play
App Downloads
563.11m
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
889
Google Play
App Share
<1%
Google Play
Apps
886
Games
3
Total Downloads
953.39m
Google Play
Download Share
<1%
Google Play
App Downloads
952.80m
Game Downloads
591.02k

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
698
Google Play
App Share
<1%
Google Play
Apps
682
Games
16
Total Downloads
1.41b
Google Play
Download Share
<1%
Google Play
App Downloads
1.40b
Game Downloads
2.88m

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
611
Google Play
App Share
<1%
Google Play
Apps
611
Games
0
Total Downloads
161.57m
Google Play
Download Share
<1%
Google Play
App Downloads
161.40m
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 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
596
Google Play
App Share
<1%
Google Play
Apps
589
Games
7
Total Downloads
697.06m
Google Play
Download Share
<1%
Google Play
App Downloads
696.23m
Game Downloads
831.13k

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

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
542
Games
4
Total Downloads
628.47m
Google Play
Download Share
<1%
Google Play
App Downloads
627.12m
Game Downloads
1.34m

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.