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Top 20 User Authentication SDKs Used in Android Apps on Google Play
Last update: 16 Jun 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, 73.68% have integrated Firebase Authentication. This accounts for 52.27% of app downloads within the user authentication SDK category.

Total Apps
385.13k
Google Play
App Share
73.68%
Google Play
Apps
360.75k
Games
24.39k
Total Downloads
273.85b
Google Play
Download Share
52.27%
Google Play
App Downloads
201.83b
Game Downloads
72.02b

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

Among all apps utilizing user authentication SDKs, 49.85% have integrated Google reCAPTCHA. This accounts for 28.76% of app downloads within the user authentication SDK category.

Total Apps
260.57k
Google Play
App Share
49.85%
Google Play
Apps
242.82k
Games
17.75k
Total Downloads
150.70b
Google Play
Download Share
28.76%
Google Play
App Downloads
104.28b
Game Downloads
46.42b

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

Among all apps utilizing user authentication SDKs, 8.16% have integrated Truecaller. This accounts for 3.66% of app downloads within the user authentication SDK category.

Total Apps
42.68k
Google Play
App Share
8.16%
Google Play
Apps
42.64k
Games
36
Total Downloads
19.18b
Google Play
Download Share
3.66%
Google Play
App Downloads
18.61b
Game Downloads
568.84m

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

Among all apps utilizing user authentication SDKs, 7.77% have integrated OTPless. This accounts for <1% of app downloads within the user authentication SDK category.

Total Apps
40.61k
Google Play
App Share
7.77%
Google Play
Apps
40.59k
Games
23
Total Downloads
1.94b
Google Play
Download Share
<1%
Google Play
App Downloads
1.87b
Game Downloads
78.25m

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

Among all apps utilizing user authentication SDKs, 7.28% have integrated AppAuth by OpenID. This accounts for 17.91% 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
38.05k
Google Play
App Share
7.28%
Google Play
Apps
37.73k
Games
315
Total Downloads
93.84b
Google Play
Download Share
17.91%
Google Play
App Downloads
92.49b
Game Downloads
1.35b

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

Among all apps utilizing user authentication SDKs, 5.66% have integrated Amazon AWS Cognito Federated Identities. This accounts for 7.18% of app downloads within the user authentication SDK category.

Total Apps
29.59k
Google Play
App Share
5.66%
Google Play
Apps
29.28k
Games
310
Total Downloads
37.63b
Google Play
Download Share
7.18%
Google Play
App Downloads
27.85b
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, 4.57% have integrated Auth0. This accounts for 6.07% 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
23.89k
Google Play
App Share
4.57%
Google Play
Apps
23.33k
Games
561
Total Downloads
31.82b
Google Play
Download Share
6.07%
Google Play
App Downloads
25.81b
Game Downloads
6.01b

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

Among all apps utilizing user authentication SDKs, 1.84% have integrated FingerprintJS. This accounts for 1.37% of app downloads within the user authentication SDK category.

Total Apps
9.62k
Google Play
App Share
1.84%
Google Play
Apps
9.51k
Games
102
Total Downloads
7.15b
Google Play
Download Share
1.37%
Google Play
App Downloads
6.91b
Game Downloads
244.65m

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

Among all apps utilizing user authentication SDKs, 1.49% have integrated Microsoft Authentication Library. This accounts for 7.20% of app downloads within the user authentication SDK category.

Total Apps
7.77k
Google Play
App Share
1.49%
Google Play
Apps
7.76k
Games
10
Total Downloads
37.71b
Google Play
Download Share
7.20%
Google Play
App Downloads
37.70b
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
1.90b
Google Play
Download Share
<1%
Google Play
App Downloads
1.90b
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
3.93k
Google Play
App Share
<1%
Google Play
Apps
3.93k
Games
2
Total Downloads
652.77m
Google Play
Download Share
<1%
Google Play
App Downloads
652.43m
Game Downloads
342.44k

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 4.05% 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
3.34k
Google Play
App Share
<1%
Google Play
Apps
1.79k
Games
1.55k
Total Downloads
21.20b
Google Play
Download Share
4.05%
Google Play
App Downloads
18.57b
Game Downloads
2.63b

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
1.67k
Google Play
App Share
<1%
Google Play
Apps
1.66k
Games
5
Total Downloads
2.88b
Google Play
Download Share
<1%
Google Play
App Downloads
2.88b
Game Downloads
658.29k

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
1.28k
Google Play
App Share
<1%
Google Play
Apps
1.26k
Games
16
Total Downloads
1.99b
Google Play
Download Share
<1%
Google Play
App Downloads
1.96b
Game Downloads
34.83m

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

Among all apps utilizing user authentication SDKs, <1% have integrated Facetec. This accounts for 1.38% of app downloads within the user authentication SDK category.

Total Apps
1.24k
Google Play
App Share
<1%
Google Play
Apps
1.18k
Games
60
Total Downloads
7.23b
Google Play
Download Share
1.38%
Google Play
App Downloads
7.10b
Game Downloads
127.68m

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

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
1.23k
Google Play
App Share
<1%
Google Play
Apps
1.23k
Games
0
Total Downloads
870.66m
Google Play
Download Share
<1%
Google Play
App Downloads
870.65m
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
1.08k
Google Play
App Share
<1%
Google Play
Apps
1.07k
Games
6
Total Downloads
2.23b
Google Play
Download Share
<1%
Google Play
App Downloads
2.23b
Game Downloads
978.61k

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 1.73% of app downloads within the user authentication SDK category.

Total Apps
926
Google Play
App Share
<1%
Google Play
Apps
892
Games
34
Total Downloads
9.06b
Google Play
Download Share
1.73%
Google Play
App Downloads
8.79b
Game Downloads
268.74m

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
695
Google Play
App Share
<1%
Google Play
Apps
679
Games
16
Total Downloads
1.62b
Google Play
Download Share
<1%
Google Play
App Downloads
1.62b
Game Downloads
3.33m

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
670
Google Play
App Share
<1%
Google Play
Apps
670
Games
0
Total Downloads
166.02m
Google Play
Download Share
<1%
Google Play
App Downloads
165.85m
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.