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Top 20 Developer Tools SDKs Used in iOS Apps on the Apple App Store
Last update: 29 Mar 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 99.98% of app downloads within the developer tools SDK category.

Total Apps
1.60m
App Store
App Share
99.95%
App Store
Apps
1.41m
Games
181.75k
Total Downloads
474.46b
App Store
Download Share
99.98%
App Store
App Downloads
356.16b
Game Downloads
118.30b

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

Among all apps utilizing developer tools SDKs, 77.70% have integrated Apple AVFoundation. This accounts for 95.63% of app downloads within the developer tools SDK category.

Total Apps
1.24m
App Store
App Share
77.70%
App Store
Apps
1.07m
Games
172.97k
Total Downloads
453.83b
App Store
Download Share
95.63%
App Store
App Downloads
336.03b
Game Downloads
117.80b

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

Among all apps utilizing developer tools SDKs, 70.67% have integrated Apple WebKit. This accounts for 94.57% of app downloads within the developer tools SDK category.

Total Apps
1.13m
App Store
App Share
70.67%
App Store
Apps
1.01m
Games
121.79k
Total Downloads
448.77b
App Store
Download Share
94.57%
App Store
App Downloads
334.85b
Game Downloads
113.91b

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

Among all apps utilizing developer tools SDKs, 49.62% have integrated Google Firebase. This accounts for 61.80% 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
792.39k
App Store
App Share
49.62%
App Store
Apps
708.37k
Games
84.02k
Total Downloads
293.26b
App Store
Download Share
61.80%
App Store
App Downloads
204.84b
Game Downloads
88.41b

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

Among all apps utilizing developer tools SDKs, 37.52% have integrated Firebase Installations. This accounts for 55.84% of app downloads within the developer tools SDK category.

Total Apps
599.26k
App Store
App Share
37.52%
App Store
Apps
553.38k
Games
45.87k
Total Downloads
264.97b
App Store
Download Share
55.84%
App Store
App Downloads
180.74b
Game Downloads
84.23b

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

Among all apps utilizing developer tools SDKs, 35.87% have integrated Apple Swift Framework. This accounts for 23.09% 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
572.79k
App Store
App Share
35.87%
App Store
Apps
512.19k
Games
60.60k
Total Downloads
109.56b
App Store
Download Share
23.09%
App Store
App Downloads
63.15b
Game Downloads
46.41b

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

Among all apps utilizing developer tools SDKs, 33.36% have integrated Apple Core Data. This accounts for 53.68% of app downloads within the developer tools SDK category.

Total Apps
532.68k
App Store
App Share
33.36%
App Store
Apps
502.84k
Games
29.84k
Total Downloads
254.75b
App Store
Download Share
53.68%
App Store
App Downloads
214.32b
Game Downloads
40.42b

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

Among all apps utilizing developer tools SDKs, 27.92% have integrated Promises by Google. This accounts for 25.56% of app downloads within the developer tools SDK category.

Total Apps
445.83k
App Store
App Share
27.92%
App Store
Apps
416.37k
Games
29.46k
Total Downloads
121.29b
App Store
Download Share
25.56%
App Store
App Downloads
84.59b
Game Downloads
36.70b

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

Among all apps utilizing developer tools SDKs, 10.89% have integrated Protobuf. This accounts for 9.62% 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
173.91k
App Store
App Share
10.89%
App Store
Apps
166.48k
Games
7.44k
Total Downloads
45.66b
App Store
Download Share
9.62%
App Store
App Downloads
39.52b
Game Downloads
6.14b

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

Among all apps utilizing developer tools SDKs, 10.10% have integrated Firebase Remote Config. This accounts for 33.98% of app downloads within the developer tools SDK category.

Total Apps
161.30k
App Store
App Share
10.10%
App Store
Apps
140.11k
Games
21.18k
Total Downloads
161.28b
App Store
Download Share
33.98%
App Store
App Downloads
117.03b
Game Downloads
44.25b

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

Among all apps utilizing developer tools SDKs, 9.91% have integrated Apple Core Bluetooth. This accounts for 16.99% of app downloads within the developer tools SDK category.

Total Apps
158.19k
App Store
App Share
9.91%
App Store
Apps
149.31k
Games
8.88k
Total Downloads
80.64b
App Store
Download Share
16.99%
App Store
App Downloads
75.68b
Game Downloads
4.96b

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

Among all apps utilizing developer tools SDKs, 7.08% have integrated Firebase App Check. This accounts for 9.48% of app downloads within the developer tools SDK category.

Total Apps
113.13k
App Store
App Share
7.08%
App Store
Apps
105.72k
Games
7.41k
Total Downloads
44.98b
App Store
Download Share
9.48%
App Store
App Downloads
34.69b
Game Downloads
10.29b

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

Among all apps utilizing developer tools SDKs, 5.89% have integrated react-native-device-info. This accounts for 1.37% 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
94.05k
App Store
App Share
5.89%
App Store
Apps
93.60k
Games
443
Total Downloads
6.49b
App Store
Download Share
1.37%
App Store
App Downloads
6.42b
Game Downloads
71.07m

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

Among all apps utilizing developer tools SDKs, 5.30% have integrated Expo. This accounts for <1% of app downloads within the developer tools SDK category.

Total Apps
84.68k
App Store
App Share
5.30%
App Store
Apps
83.30k
Games
1.38k
Total Downloads
4.65b
App Store
Download Share
<1%
App Store
App Downloads
4.52b
Game Downloads
131.15m

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

Among all apps utilizing developer tools SDKs, 2.74% have integrated RxSwift. This accounts for 5.99% of app downloads within the developer tools SDK category.

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

Total Apps
43.72k
App Store
App Share
2.74%
App Store
Apps
43.37k
Games
350
Total Downloads
28.42b
App Store
Download Share
5.99%
App Store
App Downloads
28.06b
Game Downloads
366.18m

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

Among all apps utilizing developer tools SDKs, 2.34% have integrated Apple Core ML. This accounts for 28.91% of app downloads within the developer tools SDK category.

Total Apps
37.40k
App Store
App Share
2.34%
App Store
Apps
20.87k
Games
16.53k
Total Downloads
137.18b
App Store
Download Share
28.91%
App Store
App Downloads
79.98b
Game Downloads
57.20b

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

Among all apps utilizing developer tools SDKs, 2.18% have integrated Mantle. This accounts for 3.18% 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
34.77k
App Store
App Share
2.18%
App Store
Apps
34.08k
Games
685
Total Downloads
15.11b
App Store
Download Share
3.18%
App Store
App Downloads
14.61b
Game Downloads
499.87m

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

Among all apps utilizing developer tools SDKs, 1.86% have integrated CocoaLumberjack. This accounts for 4.82% 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
29.66k
App Store
App Share
1.86%
App Store
Apps
29.34k
Games
313
Total Downloads
22.87b
App Store
Download Share
4.82%
App Store
App Downloads
21.87b
Game Downloads
996.14m

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

Among all apps utilizing developer tools SDKs, 1.84% have integrated FSCalendar. This accounts for 2.12% 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
29.45k
App Store
App Share
1.84%
App Store
Apps
29.41k
Games
38
Total Downloads
10.06b
App Store
Download Share
2.12%
App Store
App Downloads
10.02b
Game Downloads
41.23m

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.