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Top 20 User Authentication SDKs Used in Android Apps on Google Play
Last update: 3 Jul 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, 75.13% have integrated Firebase Authentication. This accounts for 55.44% of app downloads within the user authentication SDK category.

Total Apps
337.82k
Google Play
App Share
75.13%
Google Play
Apps
317.07k
Games
20.75k
Total Downloads
234.01b
Google Play
Download Share
55.44%
Google Play
App Downloads
166.35b
Game Downloads
67.66b

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

Among all apps utilizing user authentication SDKs, 40.32% have integrated Google reCAPTCHA. This accounts for 26.68% of app downloads within the user authentication SDK category.

Total Apps
181.29k
Google Play
App Share
40.32%
Google Play
Apps
168.73k
Games
12.56k
Total Downloads
112.61b
Google Play
Download Share
26.68%
Google Play
App Downloads
75.67b
Game Downloads
36.94b

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 3.75% of app downloads within the user authentication SDK category.

Total Apps
42.91k
Google Play
App Share
9.54%
Google Play
Apps
42.86k
Games
47
Total Downloads
15.83b
Google Play
Download Share
3.75%
Google Play
App Downloads
15.42b
Game Downloads
407.56m

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

Among all apps utilizing user authentication SDKs, 9.13% have integrated OTPless. This accounts for <1% of app downloads within the user authentication SDK category.

Total Apps
41.05k
Google Play
App Share
9.13%
Google Play
Apps
41.03k
Games
25
Total Downloads
1.73b
Google Play
Download Share
<1%
Google Play
App Downloads
1.67b
Game Downloads
56.47m

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

Among all apps utilizing user authentication SDKs, 7.07% have integrated Amazon AWS Cognito Federated Identities. This accounts for 8.16% of app downloads within the user authentication SDK category.

Total Apps
31.81k
Google Play
App Share
7.07%
Google Play
Apps
31.46k
Games
347
Total Downloads
34.45b
Google Play
Download Share
8.16%
Google Play
App Downloads
25.61b
Game Downloads
8.84b

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 16.57% 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
29.84k
Google Play
App Share
6.64%
Google Play
Apps
29.55k
Games
293
Total Downloads
69.96b
Google Play
Download Share
16.57%
Google Play
App Downloads
68.79b
Game Downloads
1.16b

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

Among all apps utilizing user authentication SDKs, 3.93% have integrated Auth0. This accounts for 5.92% 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
17.66k
Google Play
App Share
3.93%
Google Play
Apps
17.32k
Games
334
Total Downloads
24.97b
Google Play
Download Share
5.92%
Google Play
App Downloads
19.66b
Game Downloads
5.32b

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 7.21% of app downloads within the user authentication SDK category.

Total Apps
6.21k
Google Play
App Share
1.38%
Google Play
Apps
6.20k
Games
10
Total Downloads
30.42b
Google Play
Download Share
7.21%
Google Play
App Downloads
30.42b
Game Downloads
4.06m

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
5.62k
Google Play
App Share
1.25%
Google Play
Apps
5.55k
Games
63
Total Downloads
4.18b
Google Play
Download Share
<1%
Google Play
App Downloads
3.94b
Game Downloads
237.02m

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

Among all apps utilizing user authentication SDKs, 1.00% 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
1.00%
Google Play
Apps
4.52k
Games
0
Total Downloads
1.66b
Google Play
Download Share
<1%
Google Play
App Downloads
1.66b
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 4.18% 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
17.64b
Google Play
Download Share
4.18%
Google Play
App Downloads
15.10b
Game Downloads
2.54b

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
2.67b
Google Play
Download Share
<1%
Google Play
App Downloads
2.66b
Game Downloads
1.59m

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 1.25% of app downloads within the user authentication SDK category.

Total Apps
1.19k
Google Play
App Share
<1%
Google Play
Apps
1.11k
Games
84
Total Downloads
5.29b
Google Play
Download Share
1.25%
Google Play
App Downloads
5.20b
Game Downloads
90.32m

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
951
Google Play
App Share
<1%
Google Play
Apps
936
Games
15
Total Downloads
1.60b
Google Play
Download Share
<1%
Google Play
App Downloads
1.57b
Game Downloads
33.19m

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
873
Google Play
App Share
<1%
Google Play
Apps
870
Games
3
Total Downloads
922.82m
Google Play
Download Share
<1%
Google Play
App Downloads
922.27m
Game Downloads
547.62k

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
867
Google Play
App Share
<1%
Google Play
Apps
867
Games
0
Total Downloads
539.42m
Google Play
Download Share
<1%
Google Play
App Downloads
539.41m
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
705
Google Play
App Share
<1%
Google Play
Apps
690
Games
15
Total Downloads
1.43b
Google Play
Download Share
<1%
Google Play
App Downloads
1.43b
Game Downloads
2.71m

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
624
Games
8
Total Downloads
684.74m
Google Play
Download Share
<1%
Google Play
App Downloads
683.93m
Game Downloads
813.85k

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
604
Google Play
App Share
<1%
Google Play
Apps
604
Games
0
Total Downloads
153.86m
Google Play
Download Share
<1%
Google Play
App Downloads
153.69m
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
548
Google Play
App Share
<1%
Google Play
Apps
545
Games
3
Total Downloads
610.62m
Google Play
Download Share
<1%
Google Play
App Downloads
609.86m
Game Downloads
759.15k

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.