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Top 20 Security and Privacy SDKs Used in iOS Apps on the Apple App Store
Last update: 21 Jun 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, 68.44% have integrated Firebase App Check. This accounts for 39.53% of app downloads within the security and privacy SDK category.

Total Apps
139.75k
App Store
App Share
68.44%
App Store
Apps
131.18k
Games
8.58k
Total Downloads
54.12b
App Store
Download Share
39.53%
App Store
App Downloads
42.57b
Game Downloads
11.55b

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

Among all apps utilizing security and privacy SDKs, 30.25% have integrated Google reCAPTCHA. This accounts for 18.47% of app downloads within the security and privacy SDK category.

Total Apps
61.77k
App Store
App Share
30.25%
App Store
Apps
59.10k
Games
2.66k
Total Downloads
25.28b
App Store
Download Share
18.47%
App Store
App Downloads
18.49b
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, 14.82% have integrated CryptoSwift. This accounts for 14.81% 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
30.26k
App Store
App Share
14.82%
App Store
Apps
29.93k
Games
326
Total Downloads
20.27b
App Store
Download Share
14.81%
App Store
App Downloads
17.96b
Game Downloads
2.31b

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

Among all apps utilizing security and privacy SDKs, 3.78% have integrated TrustKit. This accounts for 6.80% 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
7.71k
App Store
App Share
3.78%
App Store
Apps
7.66k
Games
56
Total Downloads
9.31b
App Store
Download Share
6.80%
App Store
App Downloads
8.59b
Game Downloads
721.13m

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

Among all apps utilizing security and privacy SDKs, 2.86% 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
5.85k
App Store
App Share
2.86%
App Store
Apps
5.62k
Games
227
Total Downloads
4.23b
App Store
Download Share
3.09%
App Store
App Downloads
3.59b
Game Downloads
645.39m

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

Among all apps utilizing security and privacy SDKs, 1.47% have integrated Sift. This accounts for 1.69% 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
1.47%
App Store
Apps
3.00k
Games
9
Total Downloads
2.31b
App Store
Download Share
1.69%
App Store
App Downloads
2.25b
Game Downloads
57.88m

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

Among all apps utilizing security and privacy SDKs, 1.41% have integrated OneTrust Publishers Headless Consent. This accounts for 11.43% of app downloads within the security and privacy SDK category.

Total Apps
2.88k
App Store
App Share
1.41%
App Store
Apps
2.78k
Games
99
Total Downloads
15.65b
App Store
Download Share
11.43%
App Store
App Downloads
14.39b
Game Downloads
1.26b

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

Among all apps utilizing security and privacy SDKs, 1.19% have integrated FraudForce by iovation. This accounts for 3.55% of app downloads within the security and privacy SDK category.

Total Apps
2.43k
App Store
App Share
1.19%
App Store
Apps
2.41k
Games
16
Total Downloads
4.86b
App Store
Download Share
3.55%
App Store
App Downloads
4.85b
Game Downloads
6.36m

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

Among all apps utilizing security and privacy SDKs, 1.03% have integrated RNCryptor. This accounts for 1.77% 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
2.11k
App Store
App Share
1.03%
App Store
Apps
2.07k
Games
44
Total Downloads
2.42b
App Store
Download Share
1.77%
App Store
App Downloads
2.39b
Game Downloads
32.63m

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

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
1.83k
App Store
App Share
<1%
App Store
Apps
1.82k
Games
9
Total Downloads
429.78m
App Store
Download Share
<1%
App Store
App Downloads
429.54m
Game Downloads
239.96k

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

Among all apps utilizing security and privacy SDKs, <1% have integrated ThreatMetrix by LexisNexis. This accounts for 8.17% of app downloads within the security and privacy SDK category.

Total Apps
1.76k
App Store
App Share
<1%
App Store
Apps
1.34k
Games
424
Total Downloads
11.18b
App Store
Download Share
8.17%
App Store
App Downloads
11.07b
Game Downloads
111.87m

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 Usercentrics. This accounts for 10.45% of app downloads within the security and privacy SDK category.

Total Apps
1.73k
App Store
App Share
<1%
App Store
Apps
932
Games
797
Total Downloads
14.31b
App Store
Download Share
10.45%
App Store
App Downloads
2.93b
Game Downloads
11.38b

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

Among all apps utilizing security and privacy SDKs, <1% have integrated Didomi. This accounts for 3.32% 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
1.37k
App Store
App Share
<1%
App Store
Apps
1.22k
Games
148
Total Downloads
4.54b
App Store
Download Share
3.32%
App Store
App Downloads
2.84b
Game Downloads
1.70b

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
1.22k
App Store
App Share
<1%
App Store
Apps
1.22k
Games
2
Total Downloads
224.47m
App Store
Download Share
<1%
App Store
App Downloads
224.47m
Game Downloads
774

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
940
App Store
App Share
<1%
App Store
Apps
928
Games
12
Total Downloads
378.56m
App Store
Download Share
<1%
App Store
App Downloads
376.70m
Game Downloads
1.86m

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
895
App Store
App Share
<1%
App Store
Apps
888
Games
7
Total Downloads
847.52m
App Store
Download Share
<1%
App Store
App Downloads
847.48m
Game Downloads
33.36k

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

Among all apps utilizing security and privacy SDKs, <1% have integrated Riskified. This accounts for 2.49% of app downloads within the security and privacy SDK category.

Total Apps
806
App Store
App Share
<1%
App Store
Apps
784
Games
22
Total Downloads
3.41b
App Store
Download Share
2.49%
App Store
App Downloads
3.22b
Game Downloads
192.17m

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

Among all apps utilizing security and privacy SDKs, <1% have integrated FingerprintJS. This accounts for 2.13% of app downloads within the security and privacy SDK category.

Total Apps
762
App Store
App Share
<1%
App Store
Apps
723
Games
39
Total Downloads
2.92b
App Store
Download Share
2.13%
App Store
App Downloads
2.65b
Game Downloads
264.09m

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

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
417
App Store
App Share
<1%
App Store
Apps
417
Games
0
Total Downloads
1.37b
App Store
Download Share
<1%
App Store
App Downloads
1.37b
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.