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Top 20 Security and Privacy SDKs Used in iOS Apps on the Apple App Store
Last update: 9 Dec 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, 74.50% have integrated Firebase App Check. This accounts for 39.23% of app downloads within the security and privacy SDK category.

Total Apps
191.88k
App Store
App Share
74.50%
App Store
Apps
181.20k
Games
10.68k
Total Downloads
61.11b
App Store
Download Share
39.23%
App Store
App Downloads
47.97b
Game Downloads
13.14b

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

Among all apps utilizing security and privacy SDKs, 34.20% have integrated Google reCAPTCHA. This accounts for 20.40% of app downloads within the security and privacy SDK category.

Total Apps
88.08k
App Store
App Share
34.20%
App Store
Apps
84.86k
Games
3.22k
Total Downloads
31.78b
App Store
Download Share
20.40%
App Store
App Downloads
24.66b
Game Downloads
7.12b

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

Among all apps utilizing security and privacy SDKs, 12.05% have integrated CryptoSwift. This accounts for 13.06% 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
31.03k
App Store
App Share
12.05%
App Store
Apps
30.63k
Games
403
Total Downloads
20.34b
App Store
Download Share
13.06%
App Store
App Downloads
17.98b
Game Downloads
2.36b

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

Among all apps utilizing security and privacy SDKs, 2.84% 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
7.31k
App Store
App Share
2.84%
App Store
Apps
7.25k
Games
57
Total Downloads
10.08b
App Store
Download Share
6.47%
App Store
App Downloads
9.21b
Game Downloads
873.17m

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

Among all apps utilizing security and privacy SDKs, 2.16% have integrated AESCrypt. This accounts for 2.96% 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
5.57k
App Store
App Share
2.16%
App Store
Apps
5.34k
Games
230
Total Downloads
4.61b
App Store
Download Share
2.96%
App Store
App Downloads
3.84b
Game Downloads
770.77m

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

Among all apps utilizing security and privacy SDKs, 1.29% have integrated OneTrust Publishers Headless Consent. This accounts for 10.68% of app downloads within the security and privacy SDK category.

Total Apps
3.32k
App Store
App Share
1.29%
App Store
Apps
3.20k
Games
116
Total Downloads
16.63b
App Store
Download Share
10.68%
App Store
App Downloads
15.32b
Game Downloads
1.31b

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

Among all apps utilizing security and privacy SDKs, 1.13% have integrated Sift. This accounts for 1.76% 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
1.13%
App Store
Apps
2.90k
Games
9
Total Downloads
2.74b
App Store
Download Share
1.76%
App Store
App Downloads
2.69b
Game Downloads
57.90m

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

Among all apps utilizing security and privacy SDKs, <1% have integrated FraudForce by iovation. This accounts for 3.17% of app downloads within the security and privacy SDK category.

Total Apps
2.42k
App Store
App Share
<1%
App Store
Apps
2.40k
Games
21
Total Downloads
4.94b
App Store
Download Share
3.17%
App Store
App Downloads
4.94b
Game Downloads
1.70m

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
2.42k
App Store
App Share
<1%
App Store
Apps
2.41k
Games
10
Total Downloads
513.40m
App Store
Download Share
<1%
App Store
App Downloads
512.78m
Game Downloads
617.97k

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

Among all apps utilizing security and privacy SDKs, <1% have integrated Usercentrics. This accounts for 9.92% of app downloads within the security and privacy SDK category.

Total Apps
2.06k
App Store
App Share
<1%
App Store
Apps
1.20k
Games
863
Total Downloads
15.45b
App Store
Download Share
9.92%
App Store
App Downloads
3.38b
Game Downloads
12.07b

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 7.71% of app downloads within the security and privacy SDK category.

Total Apps
2.00k
App Store
App Share
<1%
App Store
Apps
1.61k
Games
385
Total Downloads
12.01b
App Store
Download Share
7.71%
App Store
App Downloads
11.89b
Game Downloads
123.44m

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 RNCryptor. This accounts for 1.53% 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
1.96k
App Store
App Share
<1%
App Store
Apps
1.92k
Games
43
Total Downloads
2.38b
App Store
Download Share
1.53%
App Store
App Downloads
2.36b
Game Downloads
22.12m

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

Among all apps utilizing security and privacy SDKs, <1% have integrated Didomi. This accounts for 3.42% 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
1.72k
App Store
App Share
<1%
App Store
Apps
1.55k
Games
163
Total Downloads
5.32b
App Store
Download Share
3.42%
App Store
App Downloads
3.18b
Game Downloads
2.14b

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
1.60k
App Store
App Share
<1%
App Store
Apps
1.60k
Games
2
Total Downloads
102.72m
App Store
Download Share
<1%
App Store
App Downloads
102.55m
Game Downloads
168.90k

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 FingerprintJS. This accounts for 2.36% of app downloads within the security and privacy SDK category.

Total Apps
1.48k
App Store
App Share
<1%
App Store
Apps
1.42k
Games
59
Total Downloads
3.67b
App Store
Download Share
2.36%
App Store
App Downloads
3.26b
Game Downloads
410.22m

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
1.03k
App Store
App Share
<1%
App Store
Apps
1.02k
Games
10
Total Downloads
497.67m
App Store
Download Share
<1%
App Store
App Downloads
493.62m
Game Downloads
4.06m

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 2.65% of app downloads within the security and privacy SDK category.

Total Apps
895
App Store
App Share
<1%
App Store
Apps
871
Games
24
Total Downloads
4.13b
App Store
Download Share
2.65%
App Store
App Downloads
3.93b
Game Downloads
208.84m

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
857
App Store
App Share
<1%
App Store
Apps
852
Games
5
Total Downloads
661.73m
App Store
Download Share
<1%
App Store
App Downloads
661.65m
Game Downloads
86.26k

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
524
App Store
App Share
<1%
App Store
Apps
524
Games
0
Total Downloads
1.52b
App Store
Download Share
<1%
App Store
App Downloads
1.52b
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.