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Top 20 Security and Privacy SDKs Used in iOS Apps on the Apple App Store
Last update: 13 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, 66.43% have integrated Firebase App Check. This accounts for 39.79% of app downloads within the security and privacy SDK category.

Total Apps
127.33k
App Store
App Share
66.43%
App Store
Apps
119.28k
Games
8.05k
Total Downloads
51.43b
App Store
Download Share
39.79%
App Store
App Downloads
40.65b
Game Downloads
10.77b

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

Among all apps utilizing security and privacy SDKs, 28.67% have integrated Google reCAPTCHA. This accounts for 16.14% of app downloads within the security and privacy SDK category.

Total Apps
54.96k
App Store
App Share
28.67%
App Store
Apps
52.44k
Games
2.52k
Total Downloads
20.86b
App Store
Download Share
16.14%
App Store
App Downloads
14.58b
Game Downloads
6.28b

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

Among all apps utilizing security and privacy SDKs, 15.64% have integrated CryptoSwift. This accounts for 15.63% 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
29.99k
App Store
App Share
15.64%
App Store
Apps
29.67k
Games
318
Total Downloads
20.20b
App Store
Download Share
15.63%
App Store
App Downloads
17.92b
Game Downloads
2.28b

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

Among all apps utilizing security and privacy SDKs, 4.41% have integrated TrustKit. This accounts for 6.36% 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
8.46k
App Store
App Share
4.41%
App Store
Apps
8.40k
Games
57
Total Downloads
8.22b
App Store
Download Share
6.36%
App Store
App Downloads
7.51b
Game Downloads
708.97m

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

Among all apps utilizing security and privacy SDKs, 3.08% have integrated AESCrypt. This accounts for 3.13% 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
5.90k
App Store
App Share
3.08%
App Store
Apps
5.68k
Games
219
Total Downloads
4.04b
App Store
Download Share
3.13%
App Store
App Downloads
3.33b
Game Downloads
708.44m

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

Among all apps utilizing security and privacy SDKs, 1.56% have integrated Sift. This accounts for 1.91% 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
3.00k
App Store
App Share
1.56%
App Store
Apps
2.99k
Games
9
Total Downloads
2.47b
App Store
Download Share
1.91%
App Store
App Downloads
2.42b
Game Downloads
55.16m

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 12.01% of app downloads within the security and privacy SDK category.

Total Apps
2.78k
App Store
App Share
1.45%
App Store
Apps
2.68k
Games
94
Total Downloads
15.52b
App Store
Download Share
12.01%
App Store
App Downloads
14.27b
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, 1.26% have integrated FraudForce by iovation. This accounts for 3.83% of app downloads within the security and privacy SDK category.

Total Apps
2.42k
App Store
App Share
1.26%
App Store
Apps
2.40k
Games
15
Total Downloads
4.94b
App Store
Download Share
3.83%
App Store
App Downloads
4.94b
Game Downloads
2.78m

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

Among all apps utilizing security and privacy SDKs, 1.12% have integrated RNCryptor. This accounts for 1.82% 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
2.15k
App Store
App Share
1.12%
App Store
Apps
2.10k
Games
45
Total Downloads
2.35b
App Store
Download Share
1.82%
App Store
App Downloads
2.32b
Game Downloads
32.37m

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 11.60% of app downloads within the security and privacy SDK category.

Total Apps
1.72k
App Store
App Share
<1%
App Store
Apps
863
Games
859
Total Downloads
15.00b
App Store
Download Share
11.60%
App Store
App Downloads
2.82b
Game Downloads
12.18b

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
1.56k
App Store
App Share
<1%
App Store
Apps
1.55k
Games
8
Total Downloads
408.80m
App Store
Download Share
<1%
App Store
App Downloads
408.58m
Game Downloads
222.80k

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 3.92% 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
1.24k
Games
175
Total Downloads
5.06b
App Store
Download Share
3.92%
App Store
App Downloads
2.74b
Game Downloads
2.32b

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
1.01k
App Store
App Share
<1%
App Store
Apps
1.01k
Games
1
Total Downloads
213.41m
App Store
Download Share
<1%
App Store
App Downloads
213.41m
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
360.03m
App Store
Download Share
<1%
App Store
App Downloads
347.91m
Game Downloads
12.12m

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
354.76m
App Store
Download Share
<1%
App Store
App Downloads
354.73m
Game Downloads
33.34k

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 2.24% of app downloads within the security and privacy SDK category.

Total Apps
661
App Store
App Share
<1%
App Store
Apps
626
Games
35
Total Downloads
2.89b
App Store
Download Share
2.24%
App Store
App Downloads
2.65b
Game Downloads
244.14m

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

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
605
App Store
App Share
<1%
App Store
Apps
583
Games
22
Total Downloads
3.22b
App Store
Download Share
2.49%
App Store
App Downloads
3.03b
Game Downloads
188.02m

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

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
210
Games
368
Total Downloads
219.39m
App Store
Download Share
<1%
App Store
App Downloads
186.55m
Game Downloads
32.84m

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

Total Apps
395
App Store
App Share
<1%
App Store
Apps
393
Games
2
Total Downloads
436.11m
App Store
Download Share
<1%
App Store
App Downloads
375.67m
Game Downloads
60.43m

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.