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Top 20 User Authentication SDKs Used in Android Apps on Google Play
Last update: 29 Aug 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, 74.73% have integrated Firebase Authentication. This accounts for 55.10% of app downloads within the user authentication SDK category.

Total Apps
337.59k
Google Play
App Share
74.73%
Google Play
Apps
316.40k
Games
21.19k
Total Downloads
237.71b
Google Play
Download Share
55.10%
Google Play
App Downloads
170.41b
Game Downloads
67.30b

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

Among all apps utilizing user authentication SDKs, 41.37% have integrated Google reCAPTCHA. This accounts for 27.19% of app downloads within the user authentication SDK category.

Total Apps
186.87k
Google Play
App Share
41.37%
Google Play
Apps
173.59k
Games
13.27k
Total Downloads
117.33b
Google Play
Download Share
27.19%
Google Play
App Downloads
79.14b
Game Downloads
38.19b

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

Among all apps utilizing user authentication SDKs, 9.46% have integrated Truecaller. This accounts for 3.97% of app downloads within the user authentication SDK category.

Total Apps
42.75k
Google Play
App Share
9.46%
Google Play
Apps
42.71k
Games
43
Total Downloads
17.13b
Google Play
Download Share
3.97%
Google Play
App Downloads
16.71b
Game Downloads
426.53m

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

Among all apps utilizing user authentication SDKs, 9.07% have integrated OTPless. This accounts for <1% of app downloads within the user authentication SDK category.

Total Apps
40.98k
Google Play
App Share
9.07%
Google Play
Apps
40.96k
Games
23
Total Downloads
1.75b
Google Play
Download Share
<1%
Google Play
App Downloads
1.69b
Game Downloads
64.57m

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

Among all apps utilizing user authentication SDKs, 6.98% have integrated AppAuth by OpenID. This accounts for 17.01% 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
31.55k
Google Play
App Share
6.98%
Google Play
Apps
31.26k
Games
287
Total Downloads
73.37b
Google Play
Download Share
17.01%
Google Play
App Downloads
72.11b
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, 6.97% have integrated Amazon AWS Cognito Federated Identities. This accounts for 8.02% of app downloads within the user authentication SDK category.

Total Apps
31.50k
Google Play
App Share
6.97%
Google Play
Apps
31.16k
Games
340
Total Downloads
34.62b
Google Play
Download Share
8.02%
Google Play
App Downloads
25.68b
Game Downloads
8.94b

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

Among all apps utilizing user authentication SDKs, 4.04% have integrated Auth0. This accounts for 5.97% 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
18.26k
Google Play
App Share
4.04%
Google Play
Apps
17.90k
Games
358
Total Downloads
25.76b
Google Play
Download Share
5.97%
Google Play
App Downloads
20.35b
Game Downloads
5.41b

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

Among all apps utilizing user authentication SDKs, 1.39% have integrated Microsoft Authentication Library. This accounts for 7.21% of app downloads within the user authentication SDK category.

Total Apps
6.29k
Google Play
App Share
1.39%
Google Play
Apps
6.28k
Games
9
Total Downloads
31.11b
Google Play
Download Share
7.21%
Google Play
App Downloads
31.10b
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, 1.24% have integrated FingerprintJS. This accounts for 1.07% of app downloads within the user authentication SDK category.

Total Apps
5.62k
Google Play
App Share
1.24%
Google Play
Apps
5.54k
Games
73
Total Downloads
4.61b
Google Play
Download Share
1.07%
Google Play
App Downloads
4.37b
Game Downloads
242.28m

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
1.69b
Google Play
Download Share
<1%
Google Play
App Downloads
1.69b
Game Downloads
793.86k

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 4.20% 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
2.13k
Google Play
App Share
<1%
Google Play
Apps
1.84k
Games
291
Total Downloads
18.14b
Google Play
Download Share
4.20%
Google Play
App Downloads
15.42b
Game Downloads
2.72b

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 1.28% of app downloads within the user authentication SDK category.

Total Apps
1.21k
Google Play
App Share
<1%
Google Play
Apps
1.12k
Games
96
Total Downloads
5.54b
Google Play
Download Share
1.28%
Google Play
App Downloads
5.43b
Game Downloads
111.37m

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
990
Google Play
App Share
<1%
Google Play
Apps
975
Games
15
Total Downloads
1.63b
Google Play
Download Share
<1%
Google Play
App Downloads
1.60b
Game Downloads
33.24m

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
910
Google Play
App Share
<1%
Google Play
Apps
910
Games
0
Total Downloads
560.15m
Google Play
Download Share
<1%
Google Play
App Downloads
560.14m
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
884
Google Play
App Share
<1%
Google Play
Apps
881
Games
3
Total Downloads
950.46m
Google Play
Download Share
<1%
Google Play
App Downloads
949.87m
Game Downloads
586.08k

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
699
Google Play
App Share
<1%
Google Play
Apps
683
Games
16
Total Downloads
1.40b
Google Play
Download Share
<1%
Google Play
App Downloads
1.40b
Game Downloads
2.87m

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
605
Google Play
App Share
<1%
Google Play
Apps
605
Games
0
Total Downloads
157.68m
Google Play
Download Share
<1%
Google Play
App Downloads
157.51m
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
592
Google Play
App Share
<1%
Google Play
Apps
585
Games
7
Total Downloads
695.47m
Google Play
Download Share
<1%
Google Play
App Downloads
694.64m
Game Downloads
830.31k

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
545
Google Play
App Share
<1%
Google Play
Apps
541
Games
4
Total Downloads
627.29m
Google Play
Download Share
<1%
Google Play
App Downloads
625.96m
Game Downloads
1.33m

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.