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Top 20 User Authentication SDKs Used in Android Apps on Google Play
Last update: 9 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, 75.12% have integrated Firebase Authentication. This accounts for 55.42% of app downloads within the user authentication SDK category.

Total Apps
338.23k
Google Play
App Share
75.12%
Google Play
Apps
317.45k
Games
20.78k
Total Downloads
234.45b
Google Play
Download Share
55.42%
Google Play
App Downloads
166.61b
Game Downloads
67.83b

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

Among all apps utilizing user authentication SDKs, 40.42% have integrated Google reCAPTCHA. This accounts for 26.69% of app downloads within the user authentication SDK category.

Total Apps
181.99k
Google Play
App Share
40.42%
Google Play
Apps
169.40k
Games
12.60k
Total Downloads
112.93b
Google Play
Download Share
26.69%
Google Play
App Downloads
75.90b
Game Downloads
37.03b

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
42.95k
Google Play
App Share
9.54%
Google Play
Apps
42.91k
Games
47
Total Downloads
15.87b
Google Play
Download Share
3.75%
Google Play
App Downloads
15.46b
Game Downloads
409.78m

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

Among all apps utilizing user authentication SDKs, 9.12% have integrated OTPless. This accounts for <1% of app downloads within the user authentication SDK category.

Total Apps
41.06k
Google Play
App Share
9.12%
Google Play
Apps
41.03k
Games
25
Total Downloads
1.73b
Google Play
Download Share
<1%
Google Play
App Downloads
1.67b
Game Downloads
57.43m

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

Among all apps utilizing user authentication SDKs, 7.06% have integrated Amazon AWS Cognito Federated Identities. This accounts for 8.18% of app downloads within the user authentication SDK category.

Total Apps
31.81k
Google Play
App Share
7.06%
Google Play
Apps
31.46k
Games
346
Total Downloads
34.61b
Google Play
Download Share
8.18%
Google Play
App Downloads
25.75b
Game Downloads
8.85b

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 16.59% 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
29.89k
Google Play
App Share
6.64%
Google Play
Apps
29.60k
Games
294
Total Downloads
70.19b
Google Play
Download Share
16.59%
Google Play
App Downloads
68.96b
Game Downloads
1.22b

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 5.93% 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
17.72k
Google Play
App Share
3.93%
Google Play
Apps
17.38k
Games
337
Total Downloads
25.09b
Google Play
Download Share
5.93%
Google Play
App Downloads
19.77b
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 7.20% 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
30.48b
Google Play
Download Share
7.20%
Google Play
App Downloads
30.48b
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
5.63k
Google Play
App Share
1.25%
Google Play
Apps
5.56k
Games
69
Total Downloads
4.18b
Google Play
Download Share
<1%
Google Play
App Downloads
3.94b
Game Downloads
238.67m

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
4.51k
Google Play
App Share
1.00%
Google Play
Apps
4.51k
Games
0
Total Downloads
1.65b
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 4.17% 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
2.18k
Google Play
App Share
<1%
Google Play
Apps
1.88k
Games
298
Total Downloads
17.66b
Google Play
Download Share
4.17%
Google Play
App Downloads
15.11b
Game Downloads
2.55b

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
2.68b
Google Play
Download Share
<1%
Google Play
App Downloads
2.68b
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 1.26% of app downloads within the user authentication SDK category.

Total Apps
1.19k
Google Play
App Share
<1%
Google Play
Apps
1.10k
Games
88
Total Downloads
5.32b
Google Play
Download Share
1.26%
Google Play
App Downloads
5.21b
Game Downloads
108.92m

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
958
Google Play
App Share
<1%
Google Play
Apps
944
Games
14
Total Downloads
1.60b
Google Play
Download Share
<1%
Google Play
App Downloads
1.57b
Game Downloads
33.07m

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
871
Google Play
App Share
<1%
Google Play
Apps
868
Games
3
Total Downloads
925.75m
Google Play
Download Share
<1%
Google Play
App Downloads
925.20m
Game Downloads
553.82k

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
870
Google Play
App Share
<1%
Google Play
Apps
870
Games
0
Total Downloads
541.18m
Google Play
Download Share
<1%
Google Play
App Downloads
541.16m
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
708
Google Play
App Share
<1%
Google Play
Apps
693
Games
15
Total Downloads
1.43b
Google Play
Download Share
<1%
Google Play
App Downloads
1.43b
Game Downloads
2.72m

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
631
Google Play
App Share
<1%
Google Play
Apps
623
Games
8
Total Downloads
685.82m
Google Play
Download Share
<1%
Google Play
App Downloads
685.01m
Game Downloads
816.02k

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
154.25m
Google Play
Download Share
<1%
Google Play
App Downloads
154.08m
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
545
Google Play
App Share
<1%
Google Play
Apps
542
Games
3
Total Downloads
612.80m
Google Play
Download Share
<1%
Google Play
App Downloads
612.04m
Game Downloads
765.35k

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.