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Top 20 Developer Tools SDKs Used in iOS Apps on the Apple App Store
Last update: 8 Oct 2026 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.

The 20 most widely-integrated developer tools SDKs:

1st

Apple Core Foundation

Check “Apple Core Foundation” SDK Insights

Among all apps utilizing developer tools SDKs, 99.96% have integrated Apple Core Foundation. This accounts for 100.00% of app downloads within the developer tools SDK category.

Total Apps
2.11m
App Store
App Share
99.96%
App Store
Apps
1.90m
Games
208.41k
Total Downloads
606.97b
App Store
Download Share
100.00%
App Store
App Downloads
465.15b
Game Downloads
141.81b

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

2nd

Apple AVFoundation

Check “Apple AVFoundation” SDK Insights

Among all apps utilizing developer tools SDKs, 75.31% have integrated Apple AVFoundation. This accounts for 94.77% of app downloads within the developer tools SDK category.

Total Apps
1.59m
App Store
App Share
75.31%
App Store
Apps
1.40m
Games
185.53k
Total Downloads
575.22b
App Store
Download Share
94.77%
App Store
App Downloads
435.57b
Game Downloads
139.65b

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

3rd

Apple WebKit

Check “Apple WebKit” SDK Insights

Among all apps utilizing developer tools SDKs, 70.42% have integrated Apple WebKit. This accounts for 93.78% of app downloads within the developer tools SDK category.

Total Apps
1.48m
App Store
App Share
70.42%
App Store
Apps
1.34m
Games
146.80k
Total Downloads
569.26b
App Store
Download Share
93.78%
App Store
App Downloads
433.13b
Game Downloads
136.12b

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

4th

Apple Accelerate

Check “Apple Accelerate” SDK Insights

Among all apps utilizing developer tools SDKs, 49.29% have integrated Apple Accelerate. This accounts for 77.18% of app downloads within the developer tools SDK category.

Total Apps
1.04m
App Store
App Share
49.29%
App Store
Apps
965.62k
Games
73.38k
Total Downloads
468.45b
App Store
Download Share
77.18%
App Store
App Downloads
347.95b
Game Downloads
120.50b

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

5th

Google Firebase

Check “Google Firebase” SDK Insights

Among all apps utilizing developer tools SDKs, 48.56% have integrated Google Firebase. This accounts for 66.71% 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
1.02m
App Store
App Share
48.56%
App Store
Apps
932.20k
Games
91.25k
Total Downloads
404.92b
App Store
Download Share
66.71%
App Store
App Downloads
292.83b
Game Downloads
112.09b

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

6th

Firebase Installations

Check “Firebase Installations” SDK Insights

Among all apps utilizing developer tools SDKs, 40.46% have integrated Firebase Installations. This accounts for 62.76% of app downloads within the developer tools SDK category.

Total Apps
852.73k
App Store
App Share
40.46%
App Store
Apps
793.86k
Games
58.86k
Total Downloads
380.96b
App Store
Download Share
62.76%
App Store
App Downloads
280.61b
Game Downloads
100.35b

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

7th

Apple Core Data

Check “Apple Core Data” SDK Insights

Among all apps utilizing developer tools SDKs, 28.73% have integrated Apple Core Data. This accounts for 51.57% of app downloads within the developer tools SDK category.

Total Apps
605.66k
App Store
App Share
28.73%
App Store
Apps
577.78k
Games
27.88k
Total Downloads
313.01b
App Store
Download Share
51.57%
App Store
App Downloads
268.09b
Game Downloads
44.92b

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

8th

Promises by Google

Check “Promises by Google” SDK Insights

Among all apps utilizing developer tools SDKs, 25.41% have integrated Promises by Google. This accounts for 18.89% of app downloads within the developer tools SDK category.

Total Apps
535.56k
App Store
App Share
25.41%
App Store
Apps
507.52k
Games
28.03k
Total Downloads
114.69b
App Store
Download Share
18.89%
App Store
App Downloads
81.63b
Game Downloads
33.06b

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

9th

Apple Metal

Check “Apple Metal” SDK Insights

Among all apps utilizing developer tools SDKs, 23.01% have integrated Apple Metal. This accounts for 61.37% of app downloads within the developer tools SDK category.

Total Apps
484.90k
App Store
App Share
23.01%
App Store
Apps
369.27k
Games
115.63k
Total Downloads
372.51b
App Store
Download Share
61.37%
App Store
App Downloads
246.89b
Game Downloads
125.62b

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

10th

Apple Swift Framework

Check “Apple Swift Framework” SDK Insights

Among all apps utilizing developer tools SDKs, 17.43% have integrated Apple Swift Framework. This accounts for 7.46% 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
367.32k
App Store
App Share
17.43%
App Store
Apps
326.01k
Games
41.31k
Total Downloads
45.25b
App Store
Download Share
7.46%
App Store
App Downloads
26.08b
Game Downloads
19.18b

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

11th

Firebase Remote Config

Check “Firebase Remote Config” SDK Insights

Among all apps utilizing developer tools SDKs, 14.27% have integrated Firebase Remote Config. This accounts for 38.20% of app downloads within the developer tools SDK category.

Total Apps
300.85k
App Store
App Share
14.27%
App Store
Apps
269.85k
Games
31.00k
Total Downloads
231.85b
App Store
Download Share
38.20%
App Store
App Downloads
174.88b
Game Downloads
56.97b

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

12th

Expo

Check “Expo” SDK Insights

Among all apps utilizing developer tools SDKs, 13.20% have integrated Expo. This accounts for 1.94% of app downloads within the developer tools SDK category.

Total Apps
278.17k
App Store
App Share
13.20%
App Store
Apps
269.38k
Games
8.79k
Total Downloads
11.76b
App Store
Download Share
1.94%
App Store
App Downloads
11.50b
Game Downloads
260.62m

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

13th

Firebase App Check

Check “Firebase App Check” SDK Insights

Among all apps utilizing developer tools SDKs, 12.42% have integrated Firebase App Check. This accounts for 12.30% of app downloads within the developer tools SDK category.

Total Apps
261.77k
App Store
App Share
12.42%
App Store
Apps
246.00k
Games
15.78k
Total Downloads
74.63b
App Store
Download Share
12.30%
App Store
App Downloads
57.60b
Game Downloads
17.03b

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

14th

Apple Vision

Check “Apple Vision” SDK Insights

Among all apps utilizing developer tools SDKs, 11.51% have integrated Apple Vision. This accounts for 27.81% of app downloads within the developer tools SDK category.

Total Apps
242.68k
App Store
App Share
11.51%
App Store
Apps
239.06k
Games
3.62k
Total Downloads
168.79b
App Store
Download Share
27.81%
App Store
App Downloads
167.55b
Game Downloads
1.24b

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

15th

Apple Core Bluetooth

Check “Apple Core Bluetooth” SDK Insights

Among all apps utilizing developer tools SDKs, 8.25% have integrated Apple Core Bluetooth. This accounts for 18.01% of app downloads within the developer tools SDK category.

Total Apps
173.91k
App Store
App Share
8.25%
App Store
Apps
166.60k
Games
7.30k
Total Downloads
109.29b
App Store
Download Share
18.01%
App Store
App Downloads
103.68b
Game Downloads
5.61b

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

16th

react-native-device-info

Check “react-native-device-info” SDK Insights

Among all apps utilizing developer tools SDKs, 7.67% have integrated react-native-device-info. This accounts for 3.55% 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
161.56k
App Store
App Share
7.67%
App Store
Apps
160.60k
Games
966
Total Downloads
21.57b
App Store
Download Share
3.55%
App Store
App Downloads
21.24b
Game Downloads
331.65m

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

17th

Protobuf

Check “Protobuf” SDK Insights

Among all apps utilizing developer tools SDKs, 5.33% have integrated Protobuf. This accounts for 18.17% 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
112.32k
App Store
App Share
5.33%
App Store
Apps
105.96k
Games
6.36k
Total Downloads
110.30b
App Store
Download Share
18.17%
App Store
App Downloads
103.23b
Game Downloads
7.07b

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

18th

Apple Speech

Check “Apple Speech” SDK Insights

Among all apps utilizing developer tools SDKs, 3.47% have integrated Apple Speech. This accounts for 11.96% of app downloads within the developer tools SDK category.

Total Apps
73.14k
App Store
App Share
3.47%
App Store
Apps
72.41k
Games
733
Total Downloads
72.61b
App Store
Download Share
11.96%
App Store
App Downloads
69.67b
Game Downloads
2.94b

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

19th

Apple Core ML

Check “Apple Core ML” SDK Insights

Among all apps utilizing developer tools SDKs, 2.93% have integrated Apple Core ML. This accounts for 34.74% of app downloads within the developer tools SDK category.

Total Apps
61.66k
App Store
App Share
2.93%
App Store
Apps
36.64k
Games
25.03k
Total Downloads
210.87b
App Store
Download Share
34.74%
App Store
App Downloads
132.37b
Game Downloads
78.50b

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

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.