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Top 20 Security and Privacy SDKs Used in iOS Apps on the Apple App Store
Last update: 13 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, 71.77% have integrated Firebase App Check. This accounts for 39.16% of app downloads within the security and privacy SDK category.

Total Apps
163.79k
App Store
App Share
71.77%
App Store
Apps
154.31k
Games
9.48k
Total Downloads
57.84b
App Store
Download Share
39.16%
App Store
App Downloads
45.01b
Game Downloads
12.83b

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

Among all apps utilizing security and privacy SDKs, 33.12% have integrated Google reCAPTCHA. This accounts for 20.47% of app downloads within the security and privacy SDK category.

Total Apps
75.59k
App Store
App Share
33.12%
App Store
Apps
72.67k
Games
2.93k
Total Downloads
30.24b
App Store
Download Share
20.47%
App Store
App Downloads
22.95b
Game Downloads
7.29b

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

Among all apps utilizing security and privacy SDKs, 13.41% 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
13.41%
App Store
Apps
30.27k
Games
343
Total Downloads
20.02b
App Store
Download Share
13.55%
App Store
App Downloads
17.66b
Game Downloads
2.37b

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

Among all apps utilizing security and privacy SDKs, 3.19% have integrated TrustKit. This accounts for 6.47% 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
7.27k
App Store
App Share
3.19%
App Store
Apps
7.22k
Games
54
Total Downloads
9.56b
App Store
Download Share
6.47%
App Store
App Downloads
8.81b
Game Downloads
744.33m

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

Among all apps utilizing security and privacy SDKs, 2.51% have integrated AESCrypt. This accounts for 3.08% 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
5.73k
App Store
App Share
2.51%
App Store
Apps
5.50k
Games
232
Total Downloads
4.55b
App Store
Download Share
3.08%
App Store
App Downloads
3.87b
Game Downloads
676.14m

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 11.32% of app downloads within the security and privacy SDK category.

Total Apps
3.06k
App Store
App Share
1.34%
App Store
Apps
2.95k
Games
107
Total Downloads
16.72b
App Store
Download Share
11.32%
App Store
App Downloads
15.43b
Game Downloads
1.29b

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 1.82% 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
2.92k
App Store
App Share
1.28%
App Store
Apps
2.91k
Games
9
Total Downloads
2.69b
App Store
Download Share
1.82%
App Store
App Downloads
2.63b
Game Downloads
57.46m

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

Among all apps utilizing security and privacy SDKs, 1.06% have integrated FraudForce by iovation. This accounts for 3.26% of app downloads within the security and privacy SDK category.

Total Apps
2.42k
App Store
App Share
1.06%
App Store
Apps
2.40k
Games
18
Total Downloads
4.81b
App Store
Download Share
3.26%
App Store
App Downloads
4.81b
Game Downloads
3.30m

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
2.19k
App Store
App Share
<1%
App Store
Apps
2.18k
Games
9
Total Downloads
474.29m
App Store
Download Share
<1%
App Store
App Downloads
473.87m
Game Downloads
425.30k

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 1.64% 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
44
Total Downloads
2.42b
App Store
Download Share
1.64%
App Store
App Downloads
2.38b
Game Downloads
33.50m

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 9.21% 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
798
Total Downloads
13.61b
App Store
Download Share
9.21%
App Store
App Downloads
3.03b
Game Downloads
10.57b

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 7.97% of app downloads within the security and privacy SDK category.

Total Apps
1.82k
App Store
App Share
<1%
App Store
Apps
1.41k
Games
407
Total Downloads
11.77b
App Store
Download Share
7.97%
App Store
App Downloads
11.65b
Game Downloads
119.86m

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
1.48k
App Store
App Share
<1%
App Store
Apps
1.48k
Games
2
Total Downloads
229.98m
App Store
Download Share
<1%
App Store
App Downloads
229.90m
Game Downloads
83.60k

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
1.47k
App Store
App Share
<1%
App Store
Apps
1.33k
Games
138
Total Downloads
4.50b
App Store
Download Share
3.05%
App Store
App Downloads
2.72b
Game Downloads
1.79b

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 2.11% of app downloads within the security and privacy SDK category.

Total Apps
1.01k
App Store
App Share
<1%
App Store
Apps
965
Games
49
Total Downloads
3.12b
App Store
Download Share
2.11%
App Store
App Downloads
2.83b
Game Downloads
290.94m

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
982
App Store
App Share
<1%
App Store
Apps
966
Games
16
Total Downloads
421.16m
App Store
Download Share
<1%
App Store
App Downloads
408.29m
Game Downloads
12.87m

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 2.66% of app downloads within the security and privacy SDK category.

Total Apps
975
App Store
App Share
<1%
App Store
Apps
951
Games
24
Total Downloads
3.94b
App Store
Download Share
2.66%
App Store
App Downloads
3.73b
Game Downloads
203.25m

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
881
App Store
App Share
<1%
App Store
Apps
876
Games
5
Total Downloads
619.65m
App Store
Download Share
<1%
App Store
App Downloads
619.57m
Game Downloads
86.19k

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
489
App Store
App Share
<1%
App Store
Apps
489
Games
0
Total Downloads
1.41b
App Store
Download Share
<1%
App Store
App Downloads
1.41b
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.