All Companies & Domains for Books & Reference Apps
Verified SDK counts are based on apps decompiled by AppGoblin.
| Android | iOS | |
|---|---|---|
| Books & Reference Apps | 2,596 | 2,130 |
| Monthly Installs | 74.5M | 95.5M |
This table lists top companies. Shown here for apps in the Books & Reference category.
AppGoblin has mapped and verified 186 companies with Android SDKs and 128 with iOS SDKs. In addition to SDK Ad Networks we found 889 advertising domains found in App-ads.txt (DIRECT) for Android and 753 for iOS. These numbers overlap with the SDK Ad Network totals and also include apps that misconfigure advertising domains in app-ads.txt file.
Mixed | 🇺🇸 |  Google
(google.com) | 72.2M | 55.9M | 44.8M | 14.7M |
Mixed | 🇺🇸 |  Facebook
(facebook.com) | 39.7M | 43.7M | 22.4M | 8.7M |
Open Source |  Kotlin
(kotlinlang.org) | 62.5M | ||||
Tracking | 🇺🇸 |  AppLovin
(applovin.com) | 23.3M | 17.9M | 18.4M | 6.9M |
Mixed |  Square
(square.com) | 48.9M | ||||
Open Source |  nanopb
(github.com-nanopb) | 53.2M | ||||
Tracking | 🇺🇸 |  Unity
(unity.com) | 14.3M | 7.1M | 15M | 6.7M |
Open Source |  JetBrains
(jetbrains.com) | 33M | ||||
Tracking | 🇺🇸 |  InMobi
(inmobi.com) | 8M | 3.5M | 16.2M | 7.1M |
Open Source |  Bumptech
(github.com-bumptech) | 33.5M | 2K | |||
Tracking | 🇺🇸 |  ByteDance
(bytedance.com) | 11.2M | 22.6M | 16.1M | 4.4M |
Tracking | 🇺🇸 |  LiftOff
(liftoff.io) | 16.3M | 7.1M | 15.1M | 5.5M |
Open Source |  Airbnb Engineering
(airbnb.io) | 33.6M | 58.9M | |||
Open Source |  Flutter
(flutter.dev) | 14.1M | 22.6M | |||
Tracking | 🇺🇸 |  Mobvista
(mobvista.com) | 11.8M | 5.8M | 13M | 3.4M |
Open Source |  Checker Framework
(checkerframework.org) | 16.7M | ||||
Tracking | rubiconproject.com
(rubiconproject.com) | 17.8M | 7.1M | |||
Tracking | 🇺🇸 |  RevenueCat
(revenuecat.com) | 2.6M | 9.7M | ||
Mixed | 🇷🇺 |  Yandex
(yandex.com) | 2.4M | 99.7K | 8M | 3.3M |
Open Source |  ReactiveX
(reactivex.io) | 19.7M | 1.6M | |||
Open Source |  SDWebImage
(github.com-SDWebImage) | 15M | ||||
Tracking | 🇺🇸 |  AppsFlyer
(appsflyer.com) | 16.1M | 8.4M | ||
Tracking | 🇺🇸 |  PubMatic
(pubmatic.com) | 1.9M | 479.5K | 14.6M | 7.5M |
Open Source |  Alamofire
(github.com-AlamoFire) | 32.4M | ||||
Tracking | onetag.com
(onetag.com) | 17.2M | 6.2M | |||
Tracking | 🇺🇸 |  Digital Turbine
(digitalturbine.com) | 7.2M | 4.8M | 9.5M | 3.8M |
Tracking | themediagrid.com
(themediagrid.com) | 17.9M | 7.9M | |||
Tracking | 🇺🇸 |  Verve Group
(verve.com) | 2.8M | 674.8K | 14.1M | 7.1M |
Mixed | 🇺🇸 |  Amazon Advertisement
(amazon.com) | 6.6M | 3.5M | 10.5M | 6.4M |
Open Source |  OpenID
(github.com-openid) | 37.8M | ||||
Tracking | 🇺🇸 |  Media.net
(media.net) | 9.5M | 4.8M | ||
Tracking | 🇷🇺 |  VK
(vk.com) | 11.3M | 51.4K | 1.7M | 555.9K |
Tracking | 🇳🇱 |  Opera
(opera.com) | 15.7M | 5.2M | ||
Open Source | 🇺🇸 |  Sentry.io
(sentry.io) | 9.5M | 23.3M | ||
Tracking | unrulymedia.com
(unrulymedia.com) | 12.8M | 5.8M | |||
Tracking | 🇺🇸 |  Start.io
(start.io) | 586.3K | 10.1M | 3.5M | |
Tracking | 🇺🇸 |  OpenX
(openx.com) | 7.5K | 11.1M | 6.9M | |
Tracking |  One Signal
(onesignal.com) | 4.9M | 2.7M | |||
Tracking | 🇺🇸 |  Loopme
(loopme.com) | 4M | 605.5K | 9.5M | 3.6M |
Tracking | 🇺🇸 |  Tappx
(tappx.com) | 155.7K | 0 | 5.9M | 1.9M |
Tracking | betweendigital.com
(betweendigital.com) | 12.3M | 4.9M | |||
Tracking | 🇺🇸 |  Joyy
(joyy.com) | 2.7M | 1.8M | 7.4M | 2.6M |
Open Source |  Greenrobot
(greenrobot.org) | 13.4M | ||||
Tracking |  Appodeal
(appodeal.com) | 3.2M | 3.5M | 9.5M | 2.5M | |
Tracking | 🇺🇸 |  Snap
(snapchat.com) | 4.4M | 26M | ||
Tracking | mobfox.com
(mobfox.com) | 7.4M | 3M | |||
Tracking | lijit.com
(lijit.com) | 10.4M | 4.7M | |||
Tracking | 🇺🇸 |  TopOn
(toponad.com) | 1.6M | 138.2K | 8M | 3M |
Tracking | 🇺🇸 |  Triplelift
(triplelift.com) | 6.7M | 3.7M | ||
Open Source |  Reachability
(github.com-tonymillion) | 7M |
SDK data is derived by downloading the app's Android APK or iOS IPA file and unzipped. We then check the app's data for SDK signatures in paths, AndroidManifest.xml and the Info.plist. Many apps are unable to be zipped. Downloading and opening the APK or IPA takes time and resources thus the smaller totals.
Android Companies: 186
iOS Companies: 128
App-ads.txt files are an open standard by the IAB to help combat ad fraud. This data was crawled from the URLs on the app's developer pages. Not all apps have app-ads.txt, many do not. Additionally, below are only apps that have the ad network listed as DIRECT instead of RESELLER.
Android Companies: 889
iOS Companies: 753