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Top 20 Security and Privacy SDKs Used in iOS Apps on the Apple App Store
Last update: 7 May 2025 CET
App Store

Top 20 Security and Privacy SDKs Used in iOS Apps on the Apple App Store

We at 42matters have identified the 20 most popular Security and Privacy SDKs leveraged by iOS apps available on the iOS app market.

Security and Privacy SDKs are developer tools that provide various functionalities for developers that need to add secure data transmission, storage, or processing to their mobile apps, as well as privacy compliance. Common features include authentication, authorization, encryption, decryption, data access control, tokenization, certificate management, secure communication, etc.

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 Security and Privacy 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 security and privacy SDKs, 65.86% have integrated Firebase App Check. This accounts for 39.70% of app downloads within the security and privacy SDK category.

Total Apps
124.88k
App Store
App Share
65.86%
App Store
Apps
116.90k
Games
7.98k
Total Downloads
50.34b
App Store
Download Share
39.70%
App Store
App Downloads
39.76b
Game Downloads
10.59b

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

Among all apps utilizing security and privacy SDKs, 28.33% have integrated Google reCAPTCHA. This accounts for 16.02% of app downloads within the security and privacy SDK category.

Total Apps
53.71k
App Store
App Share
28.33%
App Store
Apps
51.21k
Games
2.51k
Total Downloads
20.31b
App Store
Download Share
16.02%
App Store
App Downloads
14.13b
Game Downloads
6.18b

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

Among all apps utilizing security and privacy SDKs, 15.83% have integrated CryptoSwift. This accounts for 15.73% of app downloads within the security and privacy SDK category.

The CryptoSwift SDK is a growing collection of standard and secure cryptographic algorithms implemented in Swift.

Total Apps
30.01k
App Store
App Share
15.83%
App Store
Apps
29.69k
Games
316
Total Downloads
19.94b
App Store
Download Share
15.73%
App Store
App Downloads
17.68b
Game Downloads
2.26b

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

Among all apps utilizing security and privacy SDKs, 4.64% have integrated TrustKit. This accounts for 6.41% of app downloads within the security and privacy SDK category.

TrustKit is an SDK that offers an open source framework that makes it easy to deploy SSL public key pinning and reporting in any iOS 10+, macOS 10.10+, tvOS 10+, or watchOS 3+ App. It supports both Swift and Objective-C Apps.

Total Apps
8.80k
App Store
App Share
4.64%
App Store
Apps
8.74k
Games
57
Total Downloads
8.13b
App Store
Download Share
6.41%
App Store
App Downloads
7.43b
Game Downloads
694.18m

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

Among all apps utilizing security and privacy SDKs, 3.11% have integrated AESCrypt. This accounts for 3.18% of app downloads within the security and privacy SDK category.

AESCrypt is a file encryption SDK, available on several operating systems, that facilitates easy and secure file encryption based on the Advanced Encryption Standard (AES).

Total Apps
5.91k
App Store
App Share
3.11%
App Store
Apps
5.69k
Games
216
Total Downloads
4.03b
App Store
Download Share
3.18%
App Store
App Downloads
3.33b
Game Downloads
700.73m

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

Among all apps utilizing security and privacy SDKs, 1.59% have integrated Sift. This accounts for 1.92% of app downloads within the security and privacy SDK category.

Sift is a leader in digital trust and safety, empowering organizations of all sizes to unlock new revenue without risk. Sift helps businesses make accurate, real-time decisions that both improve user experience and increase revenue.

Total Apps
3.01k
App Store
App Share
1.59%
App Store
Apps
3.00k
Games
9
Total Downloads
2.44b
App Store
Download Share
1.92%
App Store
App Downloads
2.39b
Game Downloads
51.58m

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

Among all apps utilizing security and privacy SDKs, 1.45% have integrated OneTrust Publishers Headless Consent. This accounts for 12.10% of app downloads within the security and privacy SDK category.

Total Apps
2.75k
App Store
App Share
1.45%
App Store
Apps
2.65k
Games
92
Total Downloads
15.34b
App Store
Download Share
12.10%
App Store
App Downloads
14.09b
Game Downloads
1.25b

Use the 42matters SDK Explorer to find all apps that use OneTrust Publishers Headless Consent.

Among all apps utilizing security and privacy SDKs, 1.27% have integrated FraudForce by iovation. This accounts for 3.78% of app downloads within the security and privacy SDK category.

Total Apps
2.41k
App Store
App Share
1.27%
App Store
Apps
2.40k
Games
15
Total Downloads
4.79b
App Store
Download Share
3.78%
App Store
App Downloads
4.79b
Game Downloads
2.89m

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

Among all apps utilizing security and privacy SDKs, 1.13% have integrated RNCryptor. This accounts for 1.85% of app downloads within the security and privacy SDK category.

The RNCryptor SDK is just one swift file and one bridging header, allowing you to skip all the complexity of managing frameworks.

Total Apps
2.14k
App Store
App Share
1.13%
App Store
Apps
2.10k
Games
45
Total Downloads
2.35b
App Store
Download Share
1.85%
App Store
App Downloads
2.31b
Game Downloads
32.14m

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

Among all apps utilizing security and privacy SDKs, <1% have integrated Usercentrics. This accounts for 11.57% of app downloads within the security and privacy SDK category.

Total Apps
1.71k
App Store
App Share
<1%
App Store
Apps
852
Games
855
Total Downloads
14.67b
App Store
Download Share
11.57%
App Store
App Downloads
2.76b
Game Downloads
11.91b

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

Among all apps utilizing security and privacy SDKs, <1% have integrated Talsec. This accounts for <1% of app downloads within the security and privacy SDK category.

Total Apps
1.48k
App Store
App Share
<1%
App Store
Apps
1.48k
Games
8
Total Downloads
402.05m
App Store
Download Share
<1%
App Store
App Downloads
401.84m
Game Downloads
210.61k

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

Among all apps utilizing security and privacy SDKs, <1% have integrated Didomi. This accounts for 3.78% of app downloads within the security and privacy SDK category.

The Didomi SDK provides comprehensive solutions to collect, store, and leverage user consents and preferences for your business.

Total Apps
1.41k
App Store
App Share
<1%
App Store
Apps
1.23k
Games
174
Total Downloads
4.79b
App Store
Download Share
3.78%
App Store
App Downloads
2.51b
Game Downloads
2.28b

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

Among all apps utilizing security and privacy SDKs, <1% have integrated FreeRASP by Talsec. This accounts for <1% of app downloads within the security and privacy SDK category.

Total Apps
952
App Store
App Share
<1%
App Store
Apps
951
Games
1
Total Downloads
219.92m
App Store
Download Share
<1%
App Store
App Downloads
219.92m
Game Downloads
537

Use the 42matters SDK Explorer to find all apps that use FreeRASP by Talsec.

Among all apps utilizing security and privacy SDKs, <1% have integrated SSKeychain. This accounts for <1% of app downloads within the security and privacy SDK category.

SSKeychain is a simple wrapper SDK for accessing accounts, getting passwords, setting passwords, and deleting passwords using the system Keychain on Mac OS X and iOS. SSKeychain works in ARC and non-ARC projects.

Total Apps
919
App Store
App Share
<1%
App Store
Apps
908
Games
11
Total Downloads
354.07m
App Store
Download Share
<1%
App Store
App Downloads
342.00m
Game Downloads
12.08m

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

Among all apps utilizing security and privacy SDKs, <1% have integrated 1Password Extension. This accounts for <1% of app downloads within the security and privacy SDK category.

Total Apps
909
App Store
App Share
<1%
App Store
Apps
902
Games
7
Total Downloads
352.73m
App Store
Download Share
<1%
App Store
App Downloads
352.69m
Game Downloads
33.35k

Use the 42matters SDK Explorer to find all apps that use 1Password Extension.

Among all apps utilizing security and privacy SDKs, <1% have integrated FingerprintJS. This accounts for 2.12% of app downloads within the security and privacy SDK category.

Total Apps
639
App Store
App Share
<1%
App Store
Apps
604
Games
35
Total Downloads
2.69b
App Store
Download Share
2.12%
App Store
App Downloads
2.45b
Game Downloads
237.37m

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

Among all apps utilizing security and privacy SDKs, <1% have integrated ThreatMetrix by LexisNexis. This accounts for <1% of app downloads within the security and privacy SDK category.

Total Apps
578
App Store
App Share
<1%
App Store
Apps
209
Games
369
Total Downloads
218.86m
App Store
Download Share
<1%
App Store
App Downloads
186.10m
Game Downloads
32.76m

Use the 42matters SDK Explorer to find all apps that use ThreatMetrix by LexisNexis.

Among all apps utilizing security and privacy SDKs, <1% have integrated Riskified. This accounts for 2.47% of app downloads within the security and privacy SDK category.

Total Apps
550
App Store
App Share
<1%
App Store
Apps
527
Games
23
Total Downloads
3.14b
App Store
Download Share
2.47%
App Store
App Downloads
2.95b
Game Downloads
184.85m

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

Among all apps utilizing security and privacy SDKs, <1% have integrated Confiant. This accounts for <1% of app downloads within the security and privacy SDK category.

Total Apps
383
App Store
App Share
<1%
App Store
Apps
382
Games
1
Total Downloads
365.75m
App Store
Download Share
<1%
App Store
App Downloads
365.49m
Game Downloads
253.04k

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

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.