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Top 20 Developer Tools SDKs Used in iOS Apps on the Apple App Store
Last update: 16 Apr 2025 CET
App Store

Top 20 Developer Tools SDKs Used in iOS Apps on the Apple App Store

We at 42matters have identified the 20 most popular Developer Tools SDKs leveraged by iOS apps available on the iOS app market.

Developer Tool SDKs help developers build sophisticated mobile apps. Technology vendors and platform providers develop these SDKs — which include programming libraries, APIs, sample code, documentation, and other tools — for third-party app developers that want to build mobile apps that leverage the features and functionalities of their technologies or platforms.

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 Developer Tools 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 developer tools SDKs, 99.95% have integrated Apple Core Foundation. This accounts for 99.97% of app downloads within the developer tools SDK category.

Total Apps
1.61m
App Store
App Share
99.95%
App Store
Apps
1.43m
Games
182.48k
Total Downloads
480.49b
App Store
Download Share
99.97%
App Store
App Downloads
361.11b
Game Downloads
119.38b

Use the 42matters SDK Explorer to find all apps that use Apple Core Foundation.

Among all apps utilizing developer tools SDKs, 77.61% have integrated Apple AVFoundation. This accounts for 95.58% of app downloads within the developer tools SDK category.

Total Apps
1.25m
App Store
App Share
77.61%
App Store
Apps
1.08m
Games
173.38k
Total Downloads
459.36b
App Store
Download Share
95.58%
App Store
App Downloads
340.49b
Game Downloads
118.86b

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

Among all apps utilizing developer tools SDKs, 70.71% have integrated Apple WebKit. This accounts for 94.56% of app downloads within the developer tools SDK category.

Total Apps
1.14m
App Store
App Share
70.71%
App Store
Apps
1.02m
Games
122.52k
Total Downloads
454.47b
App Store
Download Share
94.56%
App Store
App Downloads
339.50b
Game Downloads
114.98b

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

Among all apps utilizing developer tools SDKs, 49.87% have integrated Google Firebase. This accounts for 64.90% of app downloads within the developer tools SDK category.

Firebase is Google's mobile platform SDK that helps you quickly develop high-quality apps and grow your business.

Total Apps
804.62k
App Store
App Share
49.87%
App Store
Apps
720.06k
Games
84.56k
Total Downloads
311.91b
App Store
Download Share
64.90%
App Store
App Downloads
220.38b
Game Downloads
91.53b

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

Among all apps utilizing developer tools SDKs, 37.80% have integrated Firebase Installations. This accounts for 56.06% of app downloads within the developer tools SDK category.

Total Apps
609.88k
App Store
App Share
37.80%
App Store
Apps
563.54k
Games
46.34k
Total Downloads
269.42b
App Store
Download Share
56.06%
App Store
App Downloads
184.22b
Game Downloads
85.19b

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

Among all apps utilizing developer tools SDKs, 35.36% have integrated Apple Swift Framework. This accounts for 22.31% of app downloads within the developer tools SDK category.

Apple Swift Framework is a powerful and intuitive programming language for macOS, iOS, watchOS, tvOS and beyond.

Total Apps
570.52k
App Store
App Share
35.36%
App Store
Apps
510.33k
Games
60.20k
Total Downloads
107.25b
App Store
Download Share
22.31%
App Store
App Downloads
61.86b
Game Downloads
45.39b

Use the 42matters SDK Explorer to find all apps that use Apple Swift Framework.

Among all apps utilizing developer tools SDKs, 33.26% have integrated Apple Core Data. This accounts for 53.42% of app downloads within the developer tools SDK category.

Total Apps
536.72k
App Store
App Share
33.26%
App Store
Apps
506.81k
Games
29.91k
Total Downloads
256.74b
App Store
Download Share
53.42%
App Store
App Downloads
216.29b
Game Downloads
40.45b

Use the 42matters SDK Explorer to find all apps that use Apple Core Data.

Among all apps utilizing developer tools SDKs, 27.94% have integrated Promises by Google. This accounts for 25.46% of app downloads within the developer tools SDK category.

Total Apps
450.77k
App Store
App Share
27.94%
App Store
Apps
421.42k
Games
29.35k
Total Downloads
122.35b
App Store
Download Share
25.46%
App Store
App Downloads
85.76b
Game Downloads
36.59b

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

Among all apps utilizing developer tools SDKs, 10.68% have integrated Protobuf. This accounts for 9.64% of app downloads within the developer tools SDK category.

Protocol Buffers (a.k.a., protobuf) are Google's language-neutral, platform-neutral, extensible mechanism for serializing structured data.

Total Apps
172.26k
App Store
App Share
10.68%
App Store
Apps
164.80k
Games
7.46k
Total Downloads
46.34b
App Store
Download Share
9.64%
App Store
App Downloads
39.72b
Game Downloads
6.63b

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

Among all apps utilizing developer tools SDKs, 10.23% have integrated Firebase Remote Config. This accounts for 34.75% of app downloads within the developer tools SDK category.

Total Apps
165.10k
App Store
App Share
10.23%
App Store
Apps
143.51k
Games
21.59k
Total Downloads
167.00b
App Store
Download Share
34.75%
App Store
App Downloads
120.60b
Game Downloads
46.39b

Use the 42matters SDK Explorer to find all apps that use Firebase Remote Config.

Among all apps utilizing developer tools SDKs, 9.84% have integrated Apple Core Bluetooth. This accounts for 16.80% of app downloads within the developer tools SDK category.

Total Apps
158.83k
App Store
App Share
9.84%
App Store
Apps
149.97k
Games
8.86k
Total Downloads
80.74b
App Store
Download Share
16.80%
App Store
App Downloads
76.17b
Game Downloads
4.57b

Use the 42matters SDK Explorer to find all apps that use Apple Core Bluetooth.

Among all apps utilizing developer tools SDKs, 7.40% have integrated Firebase App Check. This accounts for 10.22% of app downloads within the developer tools SDK category.

Total Apps
119.44k
App Store
App Share
7.40%
App Store
Apps
111.69k
Games
7.75k
Total Downloads
49.14b
App Store
Download Share
10.22%
App Store
App Downloads
38.59b
Game Downloads
10.55b

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

Among all apps utilizing developer tools SDKs, 5.82% have integrated react-native-device-info. This accounts for 1.33% of app downloads within the developer tools SDK category.

The react-native-device-info SDK offers device information for React Native for iOS and Android.

Total Apps
93.93k
App Store
App Share
5.82%
App Store
Apps
93.50k
Games
437
Total Downloads
6.41b
App Store
Download Share
1.33%
App Store
App Downloads
6.34b
Game Downloads
65.45m

Use the 42matters SDK Explorer to find all apps that use react-native-device-info.

Among all apps utilizing developer tools SDKs, 5.47% have integrated Expo. This accounts for 1.04% of app downloads within the developer tools SDK category.

Total Apps
88.29k
App Store
App Share
5.47%
App Store
Apps
86.83k
Games
1.46k
Total Downloads
5.00b
App Store
Download Share
1.04%
App Store
App Downloads
4.87b
Game Downloads
132.93m

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

Among all apps utilizing developer tools SDKs, 2.71% have integrated RxSwift. This accounts for 5.94% of app downloads within the developer tools SDK category.

The RxSwift SDK offers a framework for interacting with the Swift programming language.

Total Apps
43.71k
App Store
App Share
2.71%
App Store
Apps
43.37k
Games
346
Total Downloads
28.54b
App Store
Download Share
5.94%
App Store
App Downloads
28.17b
Game Downloads
364.15m

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

Among all apps utilizing developer tools SDKs, 2.35% have integrated Apple Core ML. This accounts for 30.07% of app downloads within the developer tools SDK category.

Total Apps
37.97k
App Store
App Share
2.35%
App Store
Apps
21.18k
Games
16.78k
Total Downloads
144.50b
App Store
Download Share
30.07%
App Store
App Downloads
86.03b
Game Downloads
58.47b

Use the 42matters SDK Explorer to find all apps that use Apple Core ML.

Among all apps utilizing developer tools SDKs, 2.20% have integrated Mantle. This accounts for 3.22% of app downloads within the developer tools SDK category.

Mantle is a Software Development Kit (SDK) that makes it easy to write simple model layers for your Cocoa or Cocoa Touch mobile applications or games.

Total Apps
35.55k
App Store
App Share
2.20%
App Store
Apps
34.87k
Games
683
Total Downloads
15.46b
App Store
Download Share
3.22%
App Store
App Downloads
14.91b
Game Downloads
550.51m

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

Among all apps utilizing developer tools SDKs, 1.85% have integrated CocoaLumberjack. This accounts for 4.85% of app downloads within the developer tools SDK category.

CocoaLumberjack is a fast and simple, yet powerful and flexible, logging framework SDK for Mac and iOS.

Total Apps
29.90k
App Store
App Share
1.85%
App Store
Apps
29.58k
Games
322
Total Downloads
23.31b
App Store
Download Share
4.85%
App Store
App Downloads
22.30b
Game Downloads
1.01b

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

Among all apps utilizing developer tools SDKs, 1.83% have integrated FSCalendar. This accounts for 2.10% of app downloads within the developer tools SDK category.

FSCalendar is a fully customizable iOS calendar library SDK, compatible with Objective-C and Swift.

Total Apps
29.54k
App Store
App Share
1.83%
App Store
Apps
29.50k
Games
38
Total Downloads
10.11b
App Store
Download Share
2.10%
App Store
App Downloads
10.07b
Game Downloads
41.93m

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

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.