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Top 20 User Authentication SDKs Used in Android Apps on Google Play
Last update: 24 Jun 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, 75.15% have integrated Firebase Authentication. This accounts for 55.25% of app downloads within the user authentication SDK category.

Total Apps
337.57k
Google Play
App Share
75.15%
Google Play
Apps
316.94k
Games
20.63k
Total Downloads
233.21b
Google Play
Download Share
55.25%
Google Play
App Downloads
165.86b
Game Downloads
67.35b

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

Among all apps utilizing user authentication SDKs, 40.15% have integrated Google reCAPTCHA. This accounts for 26.44% of app downloads within the user authentication SDK category.

Total Apps
180.33k
Google Play
App Share
40.15%
Google Play
Apps
167.87k
Games
12.46k
Total Downloads
111.59b
Google Play
Download Share
26.44%
Google Play
App Downloads
74.94b
Game Downloads
36.65b

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 3.74% of app downloads within the user authentication SDK category.

Total Apps
42.87k
Google Play
App Share
9.54%
Google Play
Apps
42.83k
Games
48
Total Downloads
15.77b
Google Play
Download Share
3.74%
Google Play
App Downloads
15.36b
Game Downloads
405.87m

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

Among all apps utilizing user authentication SDKs, 9.14% have integrated OTPless. This accounts for <1% of app downloads within the user authentication SDK category.

Total Apps
41.04k
Google Play
App Share
9.14%
Google Play
Apps
41.02k
Games
25
Total Downloads
1.72b
Google Play
Download Share
<1%
Google Play
App Downloads
1.66b
Game Downloads
54.81m

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

Among all apps utilizing user authentication SDKs, 7.09% have integrated Amazon AWS Cognito Federated Identities. This accounts for 8.14% of app downloads within the user authentication SDK category.

Total Apps
31.83k
Google Play
App Share
7.09%
Google Play
Apps
31.48k
Games
348
Total Downloads
34.37b
Google Play
Download Share
8.14%
Google Play
App Downloads
25.55b
Game Downloads
8.83b

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

Among all apps utilizing user authentication SDKs, 6.64% have integrated AppAuth by OpenID. This accounts for 16.85% 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
29.80k
Google Play
App Share
6.64%
Google Play
Apps
29.51k
Games
293
Total Downloads
71.13b
Google Play
Download Share
16.85%
Google Play
App Downloads
69.96b
Game Downloads
1.18b

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

Among all apps utilizing user authentication SDKs, 3.92% have integrated Auth0. This accounts for 5.88% 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
17.61k
Google Play
App Share
3.92%
Google Play
Apps
17.28k
Games
331
Total Downloads
24.83b
Google Play
Download Share
5.88%
Google Play
App Downloads
19.53b
Game Downloads
5.30b

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 7.18% of app downloads within the user authentication SDK category.

Total Apps
6.19k
Google Play
App Share
1.38%
Google Play
Apps
6.18k
Games
10
Total Downloads
30.32b
Google Play
Download Share
7.18%
Google Play
App Downloads
30.32b
Game Downloads
4.05m

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% of app downloads within the user authentication SDK category.

Total Apps
5.60k
Google Play
App Share
1.25%
Google Play
Apps
5.54k
Games
61
Total Downloads
4.21b
Google Play
Download Share
<1%
Google Play
App Downloads
3.97b
Game Downloads
234.63m

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

Among all apps utilizing user authentication SDKs, 1.01% 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
4.52k
Google Play
App Share
1.01%
Google Play
Apps
4.52k
Games
0
Total Downloads
1.66b
Google Play
Download Share
<1%
Google Play
App Downloads
1.65b
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 4.13% 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
2.19k
Google Play
App Share
<1%
Google Play
Apps
1.89k
Games
302
Total Downloads
17.45b
Google Play
Download Share
4.13%
Google Play
App Downloads
14.93b
Game Downloads
2.53b

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
1.94k
Google Play
App Share
<1%
Google Play
Apps
1.94k
Games
4
Total Downloads
2.66b
Google Play
Download Share
<1%
Google Play
App Downloads
2.66b
Game Downloads
1.58m

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 1.26% 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
5.31b
Google Play
Download Share
1.26%
Google Play
App Downloads
5.18b
Game Downloads
125.52m

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
937
Google Play
App Share
<1%
Google Play
Apps
923
Games
14
Total Downloads
1.59b
Google Play
Download Share
<1%
Google Play
App Downloads
1.56b
Game Downloads
33.17m

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

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
868
Google Play
App Share
<1%
Google Play
Apps
865
Games
3
Total Downloads
922.79m
Google Play
Download Share
<1%
Google Play
App Downloads
922.25m
Game Downloads
543.34k

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

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
854
Google Play
App Share
<1%
Google Play
Apps
854
Games
0
Total Downloads
537.45m
Google Play
Download Share
<1%
Google Play
App Downloads
537.43m
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 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
697
Google Play
App Share
<1%
Google Play
Apps
682
Games
15
Total Downloads
1.43b
Google Play
Download Share
<1%
Google Play
App Downloads
1.42b
Game Downloads
2.69m

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
632
Google Play
App Share
<1%
Google Play
Apps
625
Games
7
Total Downloads
683.05m
Google Play
Download Share
<1%
Google Play
App Downloads
682.25m
Game Downloads
807.83k

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
605
Google Play
App Share
<1%
Google Play
Apps
605
Games
0
Total Downloads
153.26m
Google Play
Download Share
<1%
Google Play
App Downloads
153.09m
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
549
Google Play
App Share
<1%
Google Play
Apps
546
Games
3
Total Downloads
608.55m
Google Play
Download Share
<1%
Google Play
App Downloads
607.79m
Game Downloads
754.87k

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.