All Companies & Domains for Books & Reference Apps
Verified SDK counts are based on apps decompiled by AppGoblin.
| Android | iOS | |
|---|---|---|
| Books & Reference Apps | 3,085 | 3,575 |
| Monthly Installs | 63.3M | 26.4M |
This table lists top companies. Shown here for apps in the Books & Reference category.
AppGoblin has mapped and verified 158 companies with Android SDKs and 121 with iOS SDKs. In addition to SDK Ad Networks we found 583 advertising domains found in App-ads.txt (DIRECT) for Android and 590 for iOS. These numbers overlap with the SDK Ad Network totals and also include apps that misconfigure advertising domains in app-ads.txt file.
Q/Q metrics are only available on the all-companies overview.
Mixed | 🇺🇸 |  Google
(google.com) | - | 95% | 71% | 97% | 98% |
Tracking |  Firebase
(firebase.google.com) | Google
(google.com) | 87% | 62% | |||
Mixed | 🇺🇸 |  Facebook
(facebook.com) | - | 45% | 37% | 29% | 29% |
Tracking |  AdMob
(admob.com) | Google
(google.com) | 59% | 20% | |||
Open Source |  Kotlin
(kotlinlang.org) | - | 75% | ||||
Tracking | 🇺🇸 |  AppLovin
(applovin.com) | - | 23% | 12% | 19% | 18% |
Mixed |  Square
(square.com) | - | 65% | ||||
Open Source |  nanopb
(github.com-nanopb) | - | 56% | ||||
Tracking | 🇺🇸 |  Unity
(unity.com) | - | 16% | 7.69% | 12% | 17% |
Open Source |  JetBrains
(jetbrains.com) | - | 46% | ||||
Tracking | 🇺🇸 |  InMobi
(inmobi.com) | - | 8.17% | 3.38% | 13% | 19% |
Open Source |  Bumptech
(github.com-bumptech) | - | 42% | 0.03% | |||
Tracking | 🇺🇸 |  ByteDance
(bytedance.com) | - | 15% | 7.72% | 7.57% | 11% |
Tracking | 🇺🇸 |  LiftOff
(liftoff.io) | - | 14% | 5.51% | 8.22% | 12% |
Tracking |  Vungle
(vungle.com) | LiftOff
(liftoff.io) | 14% | 5.51% | 8.19% | 12% | |
Tracking |  Pangle
(pangleglobal.com) | ByteDance
(bytedance.com) | 13% | 7.55% | 7.57% | 11% | |
Open Source |  JetBrains IntelliJ
(intellij.org) | JetBrains
(jetbrains.com) | 38% | ||||
Open Source |  Airbnb Engineering
(airbnb.io) | - | 18% | 16% | |||
Open Source |  Flutter
(flutter.dev) | - | 17% | 18% | |||
Tracking |  Mintegral
(mintegral.com) |  Mobvista
(mobvista.com) | 12% | 4.95% | 7.67% | 9.23% | |
Tracking | 🇺🇸 | Mobvista
(mobvista.com) | - | 12% | 4.95% | 7.67% | 9.23% |
Open Source |  Checker Framework
(checkerframework.org) | - | 30% | ||||
Tracking | 🇺🇸 |  Magnite
(magnite.com) | - | 15% | 15% | ||
Tracking |  ironSource
(ironsrc.com) | Unity
(unity.com) | 9.01% | 3.38% | 7.46% | 9.61% | |
Tracking | 🇺🇸 |  RevenueCat
(revenuecat.com) | - | 8.20% | 19% | ||
Mixed | 🇷🇺 |  Yandex
(yandex.com) | - | 7.81% | 2.91% | 8.12% | 6.33% |
Open Source |  SDWebImage
(github.com-SDWebImage) | - | 23% | ||||
Tracking | 🇺🇸 |  PubMatic
(pubmatic.com) | - | 1.88% | 0.36% | 8.10% | 13% |
Tracking | 🇷🇺 |  VK
(vk.com) | - | 15% | 0.39% | 4.64% | 2.41% |
Open Source |  ReactiveX
(reactivex.io) | - | 18% | 4.25% | |||
Tracking | 🇺🇸 |  Verve Group
(verve.com) | - | 2.17% | 0.81% | 7.27% | 11% |
Tracking | onetag.com
(onetag.com) | - | 11% | 10% | |||
Tracking | themediagrid.com
(themediagrid.com) | - | 11% | 10% | |||
Tracking | 🇺🇸 |  AppsFlyer
(appsflyer.com) | - | 11% | 10% | ||
Tracking | 🇺🇸 |  Digital Turbine
(digitalturbine.com) | - | 6.68% | 2.55% | 4.88% | 6.78% |
Open Source |  Alamofire
(github.com-AlamoFire) | - | 20% | ||||
Mixed | 🇺🇸 |  Amazon Advertisement
(amazon.com) | - | 5.06% | 1.82% | 4.43% | 7.96% |
Open Source |  OpenID
(github.com-openid) | - | 19% | ||||
Tracking | 🇺🇸 |  Media.net
(media.net) | - | 9.41% | 9.56% | ||
Tracking |  Smaato
(smaato.com) | Verve Group
(verve.com) | 1.30% | 0.64% | 6.84% | 10% | |
Tracking |  Opera
(opera.com) | - | 9.39% | 8.81% | |||
Tracking |  Fyber
(fyber.com) | Digital Turbine
(digitalturbine.com) | 5.74% | 2.38% | 4.33% | 5.73% | |
Tracking | 🇺🇸 |  Loopme
(loopme.com) | - | 4.15% | 0.62% | 5.00% | 7.60% |
Tracking | 🇺🇸 |  Start.io
(start.io) | - | 3.53% | 8.08% | 5.70% | |
Tracking | 🇺🇸 |  Nexxen
(nexxen.com) | - | 8.16% | 9.11% | ||
Tracking | 🇺🇸 |  OpenX
(openx.com) | - | 0.03% | 7.06% | 9.51% | |
Tracking | 🇺🇸 |  Tappx
(tappx.com) | - | 0.45% | 0.03% | 11% | 4.18% |
Tracking |  ChartBoost
(chartboost.com) | Loopme
(loopme.com) | 4.15% | 0.62% | 4.45% | 6.36% | |
Tracking | 🇺🇸 |  Joyy
(joyy.com) | - | 4.57% | 1.62% | 4.95% | 4.23% |
Tracking |  BIGO Ads
(bigo.sg) | Joyy
(joyy.com) | 4.57% | 1.62% | 4.95% | 4.23% |
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.
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.