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Top 20 Security and Privacy SDKs Used in iOS Apps on the Apple App Store
Last update: 19 Oct 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, 72.71% have integrated Firebase App Check. This accounts for 39.08% of app downloads within the security and privacy SDK category.

Total Apps
172.97k
App Store
App Share
72.71%
App Store
Apps
163.09k
Games
9.87k
Total Downloads
59.31b
App Store
Download Share
39.08%
App Store
App Downloads
46.65b
Game Downloads
12.67b

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

Among all apps utilizing security and privacy SDKs, 33.92% have integrated Google reCAPTCHA. This accounts for 20.10% of app downloads within the security and privacy SDK category.

Total Apps
80.69k
App Store
App Share
33.92%
App Store
Apps
77.66k
Games
3.04k
Total Downloads
30.50b
App Store
Download Share
20.10%
App Store
App Downloads
23.54b
Game Downloads
6.96b

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

Among all apps utilizing security and privacy SDKs, 12.93% have integrated CryptoSwift. This accounts for 13.35% 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
30.75k
App Store
App Share
12.93%
App Store
Apps
30.39k
Games
366
Total Downloads
20.26b
App Store
Download Share
13.35%
App Store
App Downloads
17.87b
Game Downloads
2.39b

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

Among all apps utilizing security and privacy SDKs, 3.05% have integrated TrustKit. This accounts for 6.28% 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
7.26k
App Store
App Share
3.05%
App Store
Apps
7.21k
Games
54
Total Downloads
9.53b
App Store
Download Share
6.28%
App Store
App Downloads
8.76b
Game Downloads
768.25m

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

Among all apps utilizing security and privacy SDKs, 2.40% have integrated AESCrypt. This accounts for 2.97% 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
5.71k
App Store
App Share
2.40%
App Store
Apps
5.49k
Games
229
Total Downloads
4.51b
App Store
Download Share
2.97%
App Store
App Downloads
3.81b
Game Downloads
695.58m

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

Among all apps utilizing security and privacy SDKs, 1.32% have integrated OneTrust Publishers Headless Consent. This accounts for 10.84% of app downloads within the security and privacy SDK category.

Total Apps
3.13k
App Store
App Share
1.32%
App Store
Apps
3.02k
Games
110
Total Downloads
16.45b
App Store
Download Share
10.84%
App Store
App Downloads
15.12b
Game Downloads
1.33b

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

Among all apps utilizing security and privacy SDKs, 1.21% 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
2.89k
App Store
App Share
1.21%
App Store
Apps
2.88k
Games
9
Total Downloads
2.77b
App Store
Download Share
1.82%
App Store
App Downloads
2.71b
Game Downloads
57.15m

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

Among all apps utilizing security and privacy SDKs, 1.01% have integrated FraudForce by iovation. This accounts for 3.21% of app downloads within the security and privacy SDK category.

Total Apps
2.40k
App Store
App Share
1.01%
App Store
Apps
2.38k
Games
17
Total Downloads
4.88b
App Store
Download Share
3.21%
App Store
App Downloads
4.88b
Game Downloads
1.86m

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
2.27k
App Store
App Share
<1%
App Store
Apps
2.26k
Games
10
Total Downloads
616.38m
App Store
Download Share
<1%
App Store
App Downloads
615.83m
Game Downloads
547.89k

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 1.58% 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
2.00k
App Store
App Share
<1%
App Store
Apps
1.96k
Games
43
Total Downloads
2.39b
App Store
Download Share
1.58%
App Store
App Downloads
2.37b
Game Downloads
21.94m

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 10.30% of app downloads within the security and privacy SDK category.

Total Apps
1.98k
App Store
App Share
<1%
App Store
Apps
1.12k
Games
864
Total Downloads
15.64b
App Store
Download Share
10.30%
App Store
App Downloads
3.30b
Game Downloads
12.34b

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 7.85% of app downloads within the security and privacy SDK category.

Total Apps
1.91k
App Store
App Share
<1%
App Store
Apps
1.52k
Games
386
Total Downloads
11.91b
App Store
Download Share
7.85%
App Store
App Downloads
11.79b
Game Downloads
116.79m

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 Didomi. This accounts for 3.34% 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
1.57k
App Store
App Share
<1%
App Store
Apps
1.41k
Games
163
Total Downloads
5.07b
App Store
Download Share
3.34%
App Store
App Downloads
2.82b
Game Downloads
2.25b

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
1.52k
App Store
App Share
<1%
App Store
Apps
1.51k
Games
2
Total Downloads
237.74m
App Store
Download Share
<1%
App Store
App Downloads
237.62m
Game Downloads
123.43k

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 2.25% of app downloads within the security and privacy SDK category.

Total Apps
1.23k
App Store
App Share
<1%
App Store
Apps
1.18k
Games
53
Total Downloads
3.42b
App Store
Download Share
2.25%
App Store
App Downloads
3.13b
Game Downloads
281.65m

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
1.01k
App Store
App Share
<1%
App Store
Apps
997
Games
16
Total Downloads
479.18m
App Store
Download Share
<1%
App Store
App Downloads
465.76m
Game Downloads
13.42m

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 2.70% of app downloads within the security and privacy SDK category.

Total Apps
958
App Store
App Share
<1%
App Store
Apps
934
Games
24
Total Downloads
4.10b
App Store
Download Share
2.70%
App Store
App Downloads
3.89b
Game Downloads
205.74m

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
870
App Store
App Share
<1%
App Store
Apps
865
Games
5
Total Downloads
630.77m
App Store
Download Share
<1%
App Store
App Downloads
630.69m
Game Downloads
86.23k

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
500
App Store
App Share
<1%
App Store
Apps
500
Games
0
Total Downloads
1.43b
App Store
Download Share
<1%
App Store
App Downloads
1.43b
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.