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Top 20 Developer Tools SDKs Used in iOS Apps on the Apple App Store
Last update: 18 Jun 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
1.63m
App Store
App Share
99.95%
App Store
Apps
1.45m
Games
182.00k
Total Downloads
494.02b
App Store
Download Share
99.98%
App Store
App Downloads
372.00b
Game Downloads
122.02b

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

Among all apps utilizing developer tools SDKs, 77.38% have integrated Apple AVFoundation. This accounts for 92.95% of app downloads within the developer tools SDK category.

Total Apps
1.26m
App Store
App Share
77.38%
App Store
Apps
1.09m
Games
169.76k
Total Downloads
459.27b
App Store
Download Share
92.95%
App Store
App Downloads
348.09b
Game Downloads
111.17b

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

Among all apps utilizing developer tools SDKs, 70.85% have integrated Apple WebKit. This accounts for 92.23% of app downloads within the developer tools SDK category.

Total Apps
1.16m
App Store
App Share
70.85%
App Store
Apps
1.03m
Games
121.18k
Total Downloads
455.70b
App Store
Download Share
92.23%
App Store
App Downloads
347.53b
Game Downloads
108.17b

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

Among all apps utilizing developer tools SDKs, 50.68% have integrated Google Firebase. This accounts for 65.39% 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
826.75k
App Store
App Share
50.68%
App Store
Apps
742.01k
Games
84.74k
Total Downloads
323.12b
App Store
Download Share
65.39%
App Store
App Downloads
228.20b
Game Downloads
94.93b

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

Among all apps utilizing developer tools SDKs, 39.28% have integrated Firebase Installations. This accounts for 61.61% of app downloads within the developer tools SDK category.

Total Apps
640.82k
App Store
App Share
39.28%
App Store
Apps
592.87k
Games
47.95k
Total Downloads
304.43b
App Store
Download Share
61.61%
App Store
App Downloads
217.27b
Game Downloads
87.16b

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

Among all apps utilizing developer tools SDKs, 33.17% have integrated Apple Core Data. This accounts for 52.52% of app downloads within the developer tools SDK category.

Total Apps
541.10k
App Store
App Share
33.17%
App Store
Apps
511.63k
Games
29.48k
Total Downloads
259.52b
App Store
Download Share
52.52%
App Store
App Downloads
221.67b
Game Downloads
37.85b

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

Among all apps utilizing developer tools SDKs, 33.07% have integrated Apple Swift Framework. This accounts for 19.93% 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
539.41k
App Store
App Share
33.07%
App Store
Apps
481.68k
Games
57.73k
Total Downloads
98.47b
App Store
Download Share
19.93%
App Store
App Downloads
59.83b
Game Downloads
38.64b

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

Among all apps utilizing developer tools SDKs, 28.31% have integrated Promises by Google. This accounts for 23.32% of app downloads within the developer tools SDK category.

Total Apps
461.85k
App Store
App Share
28.31%
App Store
Apps
433.58k
Games
28.27k
Total Downloads
115.21b
App Store
Download Share
23.32%
App Store
App Downloads
83.48b
Game Downloads
31.72b

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

Among all apps utilizing developer tools SDKs, 10.99% have integrated Firebase Remote Config. This accounts for 36.07% of app downloads within the developer tools SDK category.

Total Apps
179.33k
App Store
App Share
10.99%
App Store
Apps
156.74k
Games
22.59k
Total Downloads
178.22b
App Store
Download Share
36.07%
App Store
App Downloads
132.35b
Game Downloads
45.87b

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

Among all apps utilizing developer tools SDKs, 9.77% have integrated Apple Core Bluetooth. This accounts for 16.76% of app downloads within the developer tools SDK category.

Total Apps
159.31k
App Store
App Share
9.77%
App Store
Apps
150.71k
Games
8.60k
Total Downloads
82.79b
App Store
Download Share
16.76%
App Store
App Downloads
78.49b
Game Downloads
4.30b

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

Among all apps utilizing developer tools SDKs, 9.74% have integrated Protobuf. This accounts for 15.50% 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
158.85k
App Store
App Share
9.74%
App Store
Apps
151.61k
Games
7.25k
Total Downloads
76.58b
App Store
Download Share
15.50%
App Store
App Downloads
70.67b
Game Downloads
5.91b

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

Among all apps utilizing developer tools SDKs, 8.55% have integrated Firebase App Check. This accounts for 10.95% of app downloads within the developer tools SDK category.

Total Apps
139.40k
App Store
App Share
8.55%
App Store
Apps
130.84k
Games
8.56k
Total Downloads
54.11b
App Store
Download Share
10.95%
App Store
App Downloads
42.57b
Game Downloads
11.55b

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

Among all apps utilizing developer tools SDKs, 5.99% have integrated Expo. This accounts for 1.08% of app downloads within the developer tools SDK category.

Total Apps
97.67k
App Store
App Share
5.99%
App Store
Apps
96.09k
Games
1.58k
Total Downloads
5.32b
App Store
Download Share
1.08%
App Store
App Downloads
5.21b
Game Downloads
114.72m

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

Among all apps utilizing developer tools SDKs, 5.80% have integrated react-native-device-info. This accounts for 2.35% 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
94.63k
App Store
App Share
5.80%
App Store
Apps
94.16k
Games
470
Total Downloads
11.61b
App Store
Download Share
2.35%
App Store
App Downloads
11.49b
Game Downloads
126.15m

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

Among all apps utilizing developer tools SDKs, 2.63% have integrated RxSwift. This accounts for 5.70% of app downloads within the developer tools SDK category.

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

Total Apps
42.85k
App Store
App Share
2.63%
App Store
Apps
42.52k
Games
337
Total Downloads
28.17b
App Store
Download Share
5.70%
App Store
App Downloads
27.83b
Game Downloads
333.40m

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

Among all apps utilizing developer tools SDKs, 2.41% have integrated Apple Core ML. This accounts for 29.52% of app downloads within the developer tools SDK category.

Total Apps
39.25k
App Store
App Share
2.41%
App Store
Apps
22.58k
Games
16.67k
Total Downloads
145.86b
App Store
Download Share
29.52%
App Store
App Downloads
94.64b
Game Downloads
51.22b

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

Among all apps utilizing developer tools SDKs, 2.34% have integrated Mantle. This accounts for 3.31% 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
38.18k
App Store
App Share
2.34%
App Store
Apps
37.51k
Games
672
Total Downloads
16.35b
App Store
Download Share
3.31%
App Store
App Downloads
15.78b
Game Downloads
562.50m

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

Among all apps utilizing developer tools SDKs, 1.89% have integrated CocoaLumberjack. This accounts for 4.74% 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
30.77k
App Store
App Share
1.89%
App Store
Apps
30.43k
Games
333
Total Downloads
23.41b
App Store
Download Share
4.74%
App Store
App Downloads
22.42b
Game Downloads
992.30m

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

Among all apps utilizing developer tools SDKs, 1.78% have integrated FSCalendar. This accounts for 1.98% 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
29.01k
App Store
App Share
1.78%
App Store
Apps
28.97k
Games
40
Total Downloads
9.76b
App Store
Download Share
1.98%
App Store
App Downloads
9.70b
Game Downloads
55.70m

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.