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Top 20 User Authentication SDKs Used in iOS Apps on the Apple App Store
Last update: 20 Nov 2024 CET
App Store

Top 20 User Authentication SDKs Used in iOS Apps on the Apple App Store

We at 42matters have identified the 20 most popular User Authentication SDKs leveraged by iOS apps available on the iOS 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 Apple App 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, 48.03% have integrated Apple Accounts. This accounts for 38.50% of app downloads within the user authentication SDK category.

Total Apps
221.01k
App Store
App Share
48.03%
App Store
Apps
178.10k
Games
42.91k
Total Downloads
74.19b
App Store
Download Share
38.50%
App Store
App Downloads
51.15b
Game Downloads
23.05b

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

Among all apps utilizing user authentication SDKs, 42.97% have integrated AppAuth by OpenID. This accounts for 47.62% 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
197.72k
App Store
App Share
42.97%
App Store
Apps
191.84k
Games
5.88k
Total Downloads
91.77b
App Store
Download Share
47.62%
App Store
App Downloads
83.94b
Game Downloads
7.83b

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

Among all apps utilizing user authentication SDKs, 37.10% have integrated Firebase Authentication. This accounts for 20.14% of app downloads within the user authentication SDK category.

Total Apps
170.72k
App Store
App Share
37.10%
App Store
Apps
159.94k
Games
10.78k
Total Downloads
38.81b
App Store
Download Share
20.14%
App Store
App Downloads
29.10b
Game Downloads
9.70b

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

Among all apps utilizing user authentication SDKs, 6.81% have integrated Google reCAPTCHA. This accounts for 9.68% of app downloads within the user authentication SDK category.

Total Apps
31.32k
App Store
App Share
6.81%
App Store
Apps
29.34k
Games
1.98k
Total Downloads
18.66b
App Store
Download Share
9.68%
App Store
App Downloads
12.74b
Game Downloads
5.92b

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

Among all apps utilizing user authentication SDKs, 3.56% have integrated Amazon AWS Cognito Federated Identities. This accounts for 3.37% of app downloads within the user authentication SDK category.

Total Apps
16.36k
App Store
App Share
3.56%
App Store
Apps
15.93k
Games
434
Total Downloads
6.50b
App Store
Download Share
3.37%
App Store
App Downloads
4.28b
Game Downloads
2.21b

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

Among all apps utilizing user authentication SDKs, 1.23% have integrated Mitek MiSnap. This accounts for 2.30% 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
5.64k
App Store
App Share
1.23%
App Store
Apps
5.64k
Games
0
Total Downloads
4.42b
App Store
Download Share
2.30%
App Store
App Downloads
4.42b
Game Downloads
343

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

Among all apps utilizing user authentication SDKs, 1.17% have integrated OAuthSwift. This accounts for <1% of app downloads within the user authentication SDK category.

OAuthSwift is a Swift-based OAuth library SDK for iOS and macOS.

Total Apps
5.38k
App Store
App Share
1.17%
App Store
Apps
5.37k
Games
10
Total Downloads
578.70m
App Store
Download Share
<1%
App Store
App Downloads
569.46m
Game Downloads
9.24m

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

Among all apps utilizing user authentication SDKs, 1.03% have integrated FCUUID. This accounts for 1.27% of app downloads within the user authentication SDK category.

FCUUID is an iOS UUID library SDK and an alternative to UDID and identifierForVendor. This library provides the simplest API to obtain universally unique identifiers with different levels of persistence.

Total Apps
4.75k
App Store
App Share
1.03%
App Store
Apps
4.55k
Games
200
Total Downloads
2.44b
App Store
Download Share
1.27%
App Store
App Downloads
2.20b
Game Downloads
246.64m

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

Among all apps utilizing user authentication SDKs, <1% have integrated Microsoft Authentication Library. This accounts for 2.59% of app downloads within the user authentication SDK category.

Total Apps
4.07k
App Store
App Share
<1%
App Store
Apps
4.05k
Games
17
Total Downloads
4.99b
App Store
Download Share
2.59%
App Store
App Downloads
4.99b
Game Downloads
3.13m

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

Among all apps utilizing user authentication SDKs, <1% have integrated Auth0. This accounts for <1% 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
3.69k
App Store
App Share
<1%
App Store
Apps
3.68k
Games
7
Total Downloads
1.25b
App Store
Download Share
<1%
App Store
App Downloads
1.25b
Game Downloads
25.98k

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

Among all apps utilizing user authentication SDKs, <1% have integrated FraudForce by iovation. This accounts for 2.25% of app downloads within the user authentication SDK category.

Total Apps
2.45k
App Store
App Share
<1%
App Store
Apps
2.44k
Games
15
Total Downloads
4.33b
App Store
Download Share
2.25%
App Store
App Downloads
4.33b
Game Downloads
1.16m

Use the 42matters SDK Explorer to find all apps that use FraudForce by iovation.

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

Total Apps
1.97k
App Store
App Share
<1%
App Store
Apps
1.97k
Games
6
Total Downloads
538.58m
App Store
Download Share
<1%
App Store
App Downloads
535.81m
Game Downloads
2.77m

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

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
1.45k
App Store
App Share
<1%
App Store
Apps
1.44k
Games
10
Total Downloads
959.84m
App Store
Download Share
<1%
App Store
App Downloads
959.63m
Game Downloads
207.06k

Use the 42matters SDK Explorer to find all apps that use Kount by Equifax.

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
1.43k
App Store
App Share
<1%
App Store
Apps
1.42k
Games
1
Total Downloads
298.42m
App Store
Download Share
<1%
App Store
App Downloads
298.41m
Game Downloads
10.31k

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

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
854
App Store
App Share
<1%
App Store
Apps
807
Games
47
Total Downloads
929.92m
App Store
Download Share
<1%
App Store
App Downloads
774.52m
Game Downloads
155.40m

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

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
701
App Store
App Share
<1%
App Store
Apps
684
Games
17
Total Downloads
1.74b
App Store
Download Share
<1%
App Store
App Downloads
1.71b
Game Downloads
26.29m

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

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

Total Apps
674
App Store
App Share
<1%
App Store
Apps
662
Games
12
Total Downloads
675.03m
App Store
Download Share
<1%
App Store
App Downloads
657.53m
Game Downloads
17.50m

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

Among all apps utilizing user authentication SDKs, <1% have integrated Facetec. This accounts for 2.64% of app downloads within the user authentication SDK category.

Total Apps
661
App Store
App Share
<1%
App Store
Apps
655
Games
6
Total Downloads
5.08b
App Store
Download Share
2.64%
App Store
App Downloads
5.08b
Game Downloads
3.81m

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

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
638
App Store
App Share
<1%
App Store
Apps
635
Games
3
Total Downloads
1.45b
App Store
Download Share
<1%
App Store
App Downloads
1.45b
Game Downloads
519.04k

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

Browse iOS and Android SDKs With the SDK Explorer

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  • SDK IntelligenceSDK Intelligence

    See how many apps integrate specific SDKs, how many times these SDKs have been downloaded, developer details, similar SDKs, and more.

  • New Installations and Removals HistoryNew Installations and Removals History

    Analyze installation and removal trends for SDKs. Discover which apps have removed or integrated specific SDKs in a given timeframe.

  • Market Share per Google Play and Apple App Store CategoryMarket Share per Google Play and Apple App Store Category

    See which app categories or genres are most likely to use specific SDKs. Detect SDK market share per category.

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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.