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Top 20 Developer Tools SDKs Used in iOS Apps on the Apple App Store
Last update: 23 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
1.61m
App Store
App Share
99.95%
App Store
Apps
1.43m
Games
184.92k
Total Downloads
474.45b
App Store
Download Share
99.98%
App Store
App Downloads
356.15b
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, 77.65% have integrated Apple AVFoundation. This accounts for 95.63% of app downloads within the developer tools SDK category.

Total Apps
1.25m
App Store
App Share
77.65%
App Store
Apps
1.08m
Games
175.78k
Total Downloads
453.80b
App Store
Download Share
95.63%
App Store
App Downloads
336.00b
Game Downloads
117.80b

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

Among all apps utilizing developer tools SDKs, 70.57% 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
70.57%
App Store
Apps
1.01m
Games
123.22k
Total Downloads
448.71b
App Store
Download Share
94.56%
App Store
App Downloads
334.80b
Game Downloads
113.91b

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

Among all apps utilizing developer tools SDKs, 49.41% have integrated Google Firebase. This accounts for 57.07% 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
796.67k
App Store
App Share
49.41%
App Store
Apps
712.15k
Games
84.52k
Total Downloads
270.83b
App Store
Download Share
57.07%
App Store
App Downloads
183.79b
Game Downloads
87.04b

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

Among all apps utilizing developer tools SDKs, 37.35% have integrated Firebase Installations. This accounts for 55.78% of app downloads within the developer tools SDK category.

Total Apps
602.18k
App Store
App Share
37.35%
App Store
Apps
556.01k
Games
46.17k
Total Downloads
264.72b
App Store
Download Share
55.78%
App Store
App Downloads
180.54b
Game Downloads
84.18b

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

Among all apps utilizing developer tools SDKs, 36.03% have integrated Apple Swift Framework. This accounts for 23.30% 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
580.99k
App Store
App Share
36.03%
App Store
Apps
519.51k
Games
61.48k
Total Downloads
110.59b
App Store
Download Share
23.30%
App Store
App Downloads
63.79b
Game Downloads
46.81b

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

Among all apps utilizing developer tools SDKs, 33.32% have integrated Apple Core Data. This accounts for 53.80% of app downloads within the developer tools SDK category.

Total Apps
537.28k
App Store
App Share
33.32%
App Store
Apps
507.00k
Games
30.28k
Total Downloads
255.30b
App Store
Download Share
53.80%
App Store
App Downloads
214.75b
Game Downloads
40.55b

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

Among all apps utilizing developer tools SDKs, 27.85% have integrated Promises by Google. This accounts for 25.63% of app downloads within the developer tools SDK category.

Total Apps
449.08k
App Store
App Share
27.85%
App Store
Apps
419.31k
Games
29.77k
Total Downloads
121.62b
App Store
Download Share
25.63%
App Store
App Downloads
84.42b
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, 10.95% have integrated Protobuf. This accounts for 9.63% 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
176.56k
App Store
App Share
10.95%
App Store
Apps
169.01k
Games
7.54k
Total Downloads
45.72b
App Store
Download Share
9.63%
App Store
App Downloads
39.72b
Game Downloads
6.00b

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

Among all apps utilizing developer tools SDKs, 10.01% have integrated Firebase Remote Config. This accounts for 33.47% of app downloads within the developer tools SDK category.

Total Apps
161.40k
App Store
App Share
10.01%
App Store
Apps
140.18k
Games
21.21k
Total Downloads
158.82b
App Store
Download Share
33.47%
App Store
App Downloads
114.86b
Game Downloads
43.96b

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

Among all apps utilizing developer tools SDKs, 9.90% have integrated Apple Core Bluetooth. This accounts for 17.03% of app downloads within the developer tools SDK category.

Total Apps
159.56k
App Store
App Share
9.90%
App Store
Apps
150.43k
Games
9.13k
Total Downloads
80.84b
App Store
Download Share
17.03%
App Store
App Downloads
75.78b
Game Downloads
5.06b

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

Among all apps utilizing developer tools SDKs, 6.95% have integrated Firebase App Check. This accounts for 8.77% of app downloads within the developer tools SDK category.

Total Apps
112.10k
App Store
App Share
6.95%
App Store
Apps
104.73k
Games
7.37k
Total Downloads
41.60b
App Store
Download Share
8.77%
App Store
App Downloads
31.40b
Game Downloads
10.20b

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

Among all apps utilizing developer tools SDKs, 5.90% have integrated react-native-device-info. This accounts for 1.39% 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
95.12k
App Store
App Share
5.90%
App Store
Apps
94.66k
Games
458
Total Downloads
6.61b
App Store
Download Share
1.39%
App Store
App Downloads
6.54b
Game Downloads
71.08m

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

Among all apps utilizing developer tools SDKs, 5.27% have integrated Expo. This accounts for <1% of app downloads within the developer tools SDK category.

Total Apps
84.96k
App Store
App Share
5.27%
App Store
Apps
83.56k
Games
1.40k
Total Downloads
4.63b
App Store
Download Share
<1%
App Store
App Downloads
4.49b
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 6.15% of app downloads within the developer tools SDK category.

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

Total Apps
44.14k
App Store
App Share
2.74%
App Store
Apps
43.79k
Games
353
Total Downloads
29.19b
App Store
Download Share
6.15%
App Store
App Downloads
28.83b
Game Downloads
367.13m

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

Among all apps utilizing developer tools SDKs, 2.32% have integrated Apple Core ML. This accounts for 28.84% of app downloads within the developer tools SDK category.

Total Apps
37.48k
App Store
App Share
2.32%
App Store
Apps
20.90k
Games
16.58k
Total Downloads
136.85b
App Store
Download Share
28.84%
App Store
App Downloads
79.64b
Game Downloads
57.21b

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

Among all apps utilizing developer tools SDKs, 2.16% 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
34.90k
App Store
App Share
2.16%
App Store
Apps
34.21k
Games
688
Total Downloads
15.27b
App Store
Download Share
3.22%
App Store
App Downloads
14.77b
Game Downloads
499.87m

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 4.83% 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
29.81k
App Store
App Share
1.85%
App Store
Apps
29.49k
Games
316
Total Downloads
22.94b
App Store
Download Share
4.83%
App Store
App Downloads
21.95b
Game Downloads
996.03m

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

Among all apps utilizing developer tools SDKs, 1.85% 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
29.76k
App Store
App Share
1.85%
App Store
Apps
29.72k
Games
39
Total Downloads
10.07b
App Store
Download Share
2.12%
App Store
App Downloads
10.03b
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.