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Top 20 User Authentication SDKs Used in iOS Apps on the Apple App Store
Last update: 20 Dec 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, 46.62% have integrated Apple Accounts. This accounts for 37.62% of app downloads within the user authentication SDK category.

Total Apps
184.63k
App Store
App Share
46.62%
App Store
Apps
149.82k
Games
34.81k
Total Downloads
74.12b
App Store
Download Share
37.62%
App Store
App Downloads
50.99b
Game Downloads
23.13b

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

Among all apps utilizing user authentication SDKs, 43.40% have integrated AppAuth by OpenID. This accounts for 48.46% 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
171.91k
App Store
App Share
43.40%
App Store
Apps
166.65k
Games
5.25k
Total Downloads
95.46b
App Store
Download Share
48.46%
App Store
App Downloads
87.42b
Game Downloads
8.04b

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

Among all apps utilizing user authentication SDKs, 37.20% have integrated Firebase Authentication. This accounts for 20.29% of app downloads within the user authentication SDK category.

Total Apps
147.33k
App Store
App Share
37.20%
App Store
Apps
137.71k
Games
9.62k
Total Downloads
39.97b
App Store
Download Share
20.29%
App Store
App Downloads
30.02b
Game Downloads
9.94b

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

Among all apps utilizing user authentication SDKs, 7.58% have integrated Google reCAPTCHA. This accounts for 9.72% of app downloads within the user authentication SDK category.

Total Apps
30.01k
App Store
App Share
7.58%
App Store
Apps
28.09k
Games
1.92k
Total Downloads
19.16b
App Store
Download Share
9.72%
App Store
App Downloads
12.77b
Game Downloads
6.39b

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

Among all apps utilizing user authentication SDKs, 3.61% have integrated Amazon AWS Cognito Federated Identities. This accounts for 3.36% of app downloads within the user authentication SDK category.

Total Apps
14.31k
App Store
App Share
3.61%
App Store
Apps
13.90k
Games
411
Total Downloads
6.62b
App Store
Download Share
3.36%
App Store
App Downloads
4.36b
Game Downloads
2.25b

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

Among all apps utilizing user authentication SDKs, 1.35% have integrated Mitek MiSnap. This accounts for 2.19% 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
5.33k
App Store
App Share
1.35%
App Store
Apps
5.33k
Games
0
Total Downloads
4.32b
App Store
Download Share
2.19%
App Store
App Downloads
4.32b
Game Downloads
343

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

Among all apps utilizing user authentication SDKs, 1.19% 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
4.71k
App Store
App Share
1.19%
App Store
Apps
4.71k
Games
6
Total Downloads
587.37m
App Store
Download Share
<1%
App Store
App Downloads
578.07m
Game Downloads
9.30m

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

Among all apps utilizing user authentication SDKs, 1.04% have integrated FCUUID. This accounts for 1.26% 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
4.12k
App Store
App Share
1.04%
App Store
Apps
3.94k
Games
178
Total Downloads
2.48b
App Store
Download Share
1.26%
App Store
App Downloads
2.22b
Game Downloads
257.77m

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 2.64% of app downloads within the user authentication SDK category.

Total Apps
3.84k
App Store
App Share
<1%
App Store
Apps
3.83k
Games
15
Total Downloads
5.21b
App Store
Download Share
2.64%
App Store
App Downloads
5.20b
Game Downloads
3.14m

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
3.37k
App Store
App Share
<1%
App Store
Apps
3.36k
Games
7
Total Downloads
1.19b
App Store
Download Share
<1%
App Store
App Downloads
1.19b
Game Downloads
4.43m

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 2.42% of app downloads within the user authentication SDK category.

Total Apps
2.37k
App Store
App Share
<1%
App Store
Apps
2.35k
Games
16
Total Downloads
4.76b
App Store
Download Share
2.42%
App Store
App Downloads
4.76b
Game Downloads
2.51m

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
1.75k
App Store
App Share
<1%
App Store
Apps
1.75k
Games
6
Total Downloads
544.53m
App Store
Download Share
<1%
App Store
App Downloads
541.76m
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
1.26k
App Store
App Share
<1%
App Store
Apps
1.25k
Games
7
Total Downloads
934.42m
App Store
Download Share
<1%
App Store
App Downloads
934.28m
Game Downloads
137.57k

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
1.08k
App Store
App Share
<1%
App Store
Apps
1.08k
Games
1
Total Downloads
302.30m
App Store
Download Share
<1%
App Store
App Downloads
302.29m
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
767
App Store
App Share
<1%
App Store
Apps
725
Games
42
Total Downloads
936.12m
App Store
Download Share
<1%
App Store
App Downloads
779.03m
Game Downloads
157.10m

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
667
App Store
App Share
<1%
App Store
Apps
649
Games
18
Total Downloads
1.83b
App Store
Download Share
<1%
App Store
App Downloads
1.80b
Game Downloads
26.66m

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

Among all apps utilizing user authentication SDKs, <1% have integrated Facetec. This accounts for 2.61% of app downloads within the user authentication SDK category.

Total Apps
629
App Store
App Share
<1%
App Store
Apps
623
Games
6
Total Downloads
5.14b
App Store
Download Share
2.61%
App Store
App Downloads
5.13b
Game Downloads
5.18m

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

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
615
App Store
App Share
<1%
App Store
Apps
604
Games
11
Total Downloads
679.01m
App Store
Download Share
<1%
App Store
App Downloads
662.62m
Game Downloads
16.39m

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

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
597
App Store
App Share
<1%
App Store
Apps
594
Games
3
Total Downloads
1.54b
App Store
Download Share
<1%
App Store
App Downloads
1.54b
Game Downloads
533.33k

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.