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Top 20 Developer Tools SDKs Used in iOS Apps on the Apple App Store
Last update: 21 Feb 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
1.58m
App Store
App Share
99.95%
App Store
Apps
1.40m
Games
183.26k
Total Downloads
469.71b
App Store
Download Share
99.98%
App Store
App Downloads
352.30b
Game Downloads
117.41b

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

Among all apps utilizing developer tools SDKs, 77.67% have integrated Apple AVFoundation. This accounts for 95.73% of app downloads within the developer tools SDK category.

Total Apps
1.23m
App Store
App Share
77.67%
App Store
Apps
1.05m
Games
174.51k
Total Downloads
449.78b
App Store
Download Share
95.73%
App Store
App Downloads
332.87b
Game Downloads
116.91b

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

Among all apps utilizing developer tools SDKs, 70.45% have integrated Apple WebKit. This accounts for 94.61% of app downloads within the developer tools SDK category.

Total Apps
1.11m
App Store
App Share
70.45%
App Store
Apps
992.78k
Games
121.12k
Total Downloads
444.48b
App Store
Download Share
94.61%
App Store
App Downloads
331.45b
Game Downloads
113.03b

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

Among all apps utilizing developer tools SDKs, 49.84% have integrated Google Firebase. This accounts for 66.17% 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
788.03k
App Store
App Share
49.84%
App Store
Apps
702.19k
Games
85.83k
Total Downloads
310.89b
App Store
Download Share
66.17%
App Store
App Downloads
217.82b
Game Downloads
93.07b

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

Among all apps utilizing developer tools SDKs, 37.06% have integrated Apple Swift Framework. This accounts for 24.29% 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
586.00k
App Store
App Share
37.06%
App Store
Apps
524.33k
Games
61.67k
Total Downloads
114.10b
App Store
Download Share
24.29%
App Store
App Downloads
65.92b
Game Downloads
48.18b

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

Among all apps utilizing developer tools SDKs, 36.62% have integrated Firebase Installations. This accounts for 55.46% of app downloads within the developer tools SDK category.

Total Apps
579.08k
App Store
App Share
36.62%
App Store
Apps
534.20k
Games
44.88k
Total Downloads
260.58b
App Store
Download Share
55.46%
App Store
App Downloads
177.06b
Game Downloads
83.52b

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

Among all apps utilizing developer tools SDKs, 33.43% have integrated Apple Core Data. This accounts for 54.00% of app downloads within the developer tools SDK category.

Total Apps
528.60k
App Store
App Share
33.43%
App Store
Apps
498.19k
Games
30.42k
Total Downloads
253.69b
App Store
Download Share
54.00%
App Store
App Downloads
212.53b
Game Downloads
41.16b

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

Among all apps utilizing developer tools SDKs, 27.71% have integrated Promises by Google. This accounts for 26.12% of app downloads within the developer tools SDK category.

Total Apps
438.17k
App Store
App Share
27.71%
App Store
Apps
408.34k
Games
29.83k
Total Downloads
122.70b
App Store
Download Share
26.12%
App Store
App Downloads
85.49b
Game Downloads
37.21b

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

Among all apps utilizing developer tools SDKs, 11.42% have integrated Protobuf. This accounts for 10.18% 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
180.57k
App Store
App Share
11.42%
App Store
Apps
172.96k
Games
7.62k
Total Downloads
47.81b
App Store
Download Share
10.18%
App Store
App Downloads
41.20b
Game Downloads
6.61b

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

Among all apps utilizing developer tools SDKs, 9.99% have integrated Apple Core Bluetooth. This accounts for 17.21% of app downloads within the developer tools SDK category.

Total Apps
157.91k
App Store
App Share
9.99%
App Store
Apps
148.63k
Games
9.28k
Total Downloads
80.85b
App Store
Download Share
17.21%
App Store
App Downloads
74.78b
Game Downloads
6.07b

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

Among all apps utilizing developer tools SDKs, 9.79% have integrated Firebase Remote Config. This accounts for 34.80% of app downloads within the developer tools SDK category.

Total Apps
154.74k
App Store
App Share
9.79%
App Store
Apps
133.94k
Games
20.80k
Total Downloads
163.52b
App Store
Download Share
34.80%
App Store
App Downloads
118.09b
Game Downloads
45.43b

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

Among all apps utilizing developer tools SDKs, 6.60% have integrated Firebase App Check. This accounts for 10.11% of app downloads within the developer tools SDK category.

Total Apps
104.39k
App Store
App Share
6.60%
App Store
Apps
97.12k
Games
7.27k
Total Downloads
47.51b
App Store
Download Share
10.11%
App Store
App Downloads
37.07b
Game Downloads
10.44b

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

Among all apps utilizing developer tools SDKs, 6.02% have integrated react-native-device-info. This accounts for 1.49% 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
95.15k
App Store
App Share
6.02%
App Store
Apps
94.68k
Games
469
Total Downloads
7.01b
App Store
Download Share
1.49%
App Store
App Downloads
6.94b
Game Downloads
72.40m

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

Among all apps utilizing developer tools SDKs, 5.03% have integrated Expo. This accounts for <1% of app downloads within the developer tools SDK category.

Total Apps
79.49k
App Store
App Share
5.03%
App Store
Apps
78.19k
Games
1.30k
Total Downloads
4.24b
App Store
Download Share
<1%
App Store
App Downloads
4.11b
Game Downloads
128.41m

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

Among all apps utilizing developer tools SDKs, 2.79% have integrated RxSwift. This accounts for 6.25% of app downloads within the developer tools SDK category.

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

Total Apps
44.16k
App Store
App Share
2.79%
App Store
Apps
43.81k
Games
341
Total Downloads
29.38b
App Store
Download Share
6.25%
App Store
App Downloads
28.99b
Game Downloads
389.65m

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

Among all apps utilizing developer tools SDKs, 2.25% have integrated Apple Core ML. This accounts for 29.32% of app downloads within the developer tools SDK category.

Total Apps
35.57k
App Store
App Share
2.25%
App Store
Apps
19.73k
Games
15.84k
Total Downloads
137.73b
App Store
Download Share
29.32%
App Store
App Downloads
81.64b
Game Downloads
56.09b

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

Among all apps utilizing developer tools SDKs, 2.10% have integrated Mantle. This accounts for 3.28% 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
33.23k
App Store
App Share
2.10%
App Store
Apps
32.55k
Games
680
Total Downloads
15.41b
App Store
Download Share
3.28%
App Store
App Downloads
14.90b
Game Downloads
509.99m

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

Among all apps utilizing developer tools SDKs, 1.87% have integrated FSCalendar. This accounts for 2.15% 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
29.52k
App Store
App Share
1.87%
App Store
Apps
29.49k
Games
36
Total Downloads
10.11b
App Store
Download Share
2.15%
App Store
App Downloads
10.06b
Game Downloads
40.25m

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

Among all apps utilizing developer tools SDKs, 1.85% have integrated CocoaLumberjack. This accounts for 4.84% 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
29.22k
App Store
App Share
1.85%
App Store
Apps
28.93k
Games
292
Total Downloads
22.72b
App Store
Download Share
4.84%
App Store
App Downloads
21.75b
Game Downloads
975.37m

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

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.