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Top 20 Security and Privacy SDKs Used in iOS Apps on the Apple App Store
Last update: 10 Sep 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, 71.61% have integrated Firebase App Check. This accounts for 38.84% of app downloads within the security and privacy SDK category.

Total Apps
162.65k
App Store
App Share
71.61%
App Store
Apps
153.21k
Games
9.44k
Total Downloads
56.83b
App Store
Download Share
38.84%
App Store
App Downloads
44.61b
Game Downloads
12.22b

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

Among all apps utilizing security and privacy SDKs, 32.96% have integrated Google reCAPTCHA. This accounts for 20.07% of app downloads within the security and privacy SDK category.

Total Apps
74.86k
App Store
App Share
32.96%
App Store
Apps
71.94k
Games
2.92k
Total Downloads
29.36b
App Store
Download Share
20.07%
App Store
App Downloads
22.57b
Game Downloads
6.79b

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

Among all apps utilizing security and privacy SDKs, 13.48% have integrated CryptoSwift. This accounts for 13.55% 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
30.61k
App Store
App Share
13.48%
App Store
Apps
30.27k
Games
343
Total Downloads
19.83b
App Store
Download Share
13.55%
App Store
App Downloads
17.51b
Game Downloads
2.32b

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

Among all apps utilizing security and privacy SDKs, 3.22% have integrated TrustKit. This accounts for 6.50% 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
7.32k
App Store
App Share
3.22%
App Store
Apps
7.27k
Games
54
Total Downloads
9.52b
App Store
Download Share
6.50%
App Store
App Downloads
8.79b
Game Downloads
731.98m

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

Among all apps utilizing security and privacy SDKs, 2.53% have integrated AESCrypt. This accounts for 3.09% 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
5.75k
App Store
App Share
2.53%
App Store
Apps
5.52k
Games
233
Total Downloads
4.52b
App Store
Download Share
3.09%
App Store
App Downloads
3.85b
Game Downloads
668.66m

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

Among all apps utilizing security and privacy SDKs, 1.34% have integrated OneTrust Publishers Headless Consent. This accounts for 11.28% of app downloads within the security and privacy SDK category.

Total Apps
3.05k
App Store
App Share
1.34%
App Store
Apps
2.94k
Games
107
Total Downloads
16.50b
App Store
Download Share
11.28%
App Store
App Downloads
15.22b
Game Downloads
1.28b

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

Among all apps utilizing security and privacy SDKs, 1.28% have integrated Sift. This accounts for 1.83% 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
2.91k
App Store
App Share
1.28%
App Store
Apps
2.90k
Games
9
Total Downloads
2.68b
App Store
Download Share
1.83%
App Store
App Downloads
2.62b
Game Downloads
57.72m

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

Among all apps utilizing security and privacy SDKs, 1.07% have integrated FraudForce by iovation. This accounts for 3.25% of app downloads within the security and privacy SDK category.

Total Apps
2.42k
App Store
App Share
1.07%
App Store
Apps
2.40k
Games
17
Total Downloads
4.76b
App Store
Download Share
3.25%
App Store
App Downloads
4.75b
Game Downloads
3.22m

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

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
2.17k
App Store
App Share
<1%
App Store
Apps
2.16k
Games
9
Total Downloads
454.42m
App Store
Download Share
<1%
App Store
App Downloads
454.08m
Game Downloads
341.28k

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

Among all apps utilizing security and privacy SDKs, <1% have integrated RNCryptor. This accounts for 1.63% 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
2.01k
App Store
App Share
<1%
App Store
Apps
1.97k
Games
45
Total Downloads
2.38b
App Store
Download Share
1.63%
App Store
App Downloads
2.35b
Game Downloads
33.07m

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 9.33% of app downloads within the security and privacy SDK category.

Total Apps
1.86k
App Store
App Share
<1%
App Store
Apps
1.06k
Games
797
Total Downloads
13.66b
App Store
Download Share
9.33%
App Store
App Downloads
3.05b
Game Downloads
10.61b

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

Among all apps utilizing security and privacy SDKs, <1% have integrated ThreatMetrix by LexisNexis. This accounts for 7.96% of app downloads within the security and privacy SDK category.

Total Apps
1.81k
App Store
App Share
<1%
App Store
Apps
1.40k
Games
406
Total Downloads
11.65b
App Store
Download Share
7.96%
App Store
App Downloads
11.53b
Game Downloads
118.71m

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 FreeRASP by Talsec. This accounts for <1% of app downloads within the security and privacy SDK category.

Total Apps
1.46k
App Store
App Share
<1%
App Store
Apps
1.46k
Games
2
Total Downloads
226.91m
App Store
Download Share
<1%
App Store
App Downloads
226.85m
Game Downloads
61.86k

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 Didomi. This accounts for 3.05% 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
1.46k
App Store
App Share
<1%
App Store
Apps
1.32k
Games
138
Total Downloads
4.46b
App Store
Download Share
3.05%
App Store
App Downloads
2.68b
Game Downloads
1.78b

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

Among all apps utilizing security and privacy SDKs, <1% have integrated FingerprintJS. This accounts for 2.09% of app downloads within the security and privacy SDK category.

Total Apps
1.00k
App Store
App Share
<1%
App Store
Apps
953
Games
49
Total Downloads
3.05b
App Store
Download Share
2.09%
App Store
App Downloads
2.77b
Game Downloads
278.98m

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

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
977
App Store
App Share
<1%
App Store
Apps
961
Games
16
Total Downloads
415.47m
App Store
Download Share
<1%
App Store
App Downloads
402.88m
Game Downloads
12.58m

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

Among all apps utilizing security and privacy SDKs, <1% have integrated Riskified. This accounts for 2.68% of app downloads within the security and privacy SDK category.

Total Apps
969
App Store
App Share
<1%
App Store
Apps
945
Games
24
Total Downloads
3.92b
App Store
Download Share
2.68%
App Store
App Downloads
3.72b
Game Downloads
200.12m

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

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
889
App Store
App Share
<1%
App Store
Apps
884
Games
5
Total Downloads
644.64m
App Store
Download Share
<1%
App Store
App Downloads
644.55m
Game Downloads
83.52k

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

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

Total Apps
482
App Store
App Share
<1%
App Store
Apps
482
Games
0
Total Downloads
1.40b
App Store
Download Share
<1%
App Store
App Downloads
1.40b
Game Downloads
0

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

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.