Is Underdog safe to use?

Underdog integrates 17 third-party SDKs spanning analytics, advertising, and attribution. Its App Store privacy label declares cross-app tracking via Location, Contact Info, Identifiers, and Usage Data. It collects data linked to your identity including Financial Info, Location, Contact Info, and Identifiers and 2 more categories. It includes 5 advertising or attribution SDKs. Whether this is acceptable depends on your personal privacy preferences.

What permissions does Underdog need?

Underdog requests 13 iOS permissions: App Tracking Transparency, Camera, Microphone, Photo Library, Location (When In Use), Location (Always), Location (Always & When In Use), Motion & Fitness, Face ID, Save to Photo Library, Bluetooth, Bluetooth Peripheral, and Local Network.

What data does Underdog collect?

According to its App Store privacy label, Underdog declares cross-app tracking via Location, Contact Info, Identifiers, and Usage Data. It collects data linked to your identity including Financial Info, Location, Contact Info, Identifiers, Usage Data, and Diagnostics.

How many SDKs does Underdog have?

Underdog integrates 17 third-party SDKs. 3 for advertising, 2 for attribution, 6 for analytics, 1 for payments, 1 for customer support, and 2 for other.

Does Underdog use Facebook tracking?

Yes. Underdog includes 2 Facebook SDKs: Facebook AEM and Facebook SDK. These are used for ad measurement, attribution, and integration with Facebook's advertising platform (developers.facebook.com).

Does Underdog use Google SDKs?

Yes. Underdog includes 3 Google or Firebase SDKs: Google Ads Conversion, Firebase Analytics, and Google App Measurement. These are used for ads, analytics, and cloud services.

Does Underdog use App Tracking Transparency?

Yes. Underdog requests the App Tracking Transparency permission, which means it asks for your consent to track your activity across other companies' apps and websites.

Does Underdog access your location?

Yes. Underdog requests location access. The developer states: "Underdog needs your Location access to determine whether you are in an eligible area to enter a contest. The location check is performed on-demand only.".

Does Underdog access your camera or microphone?

Underdog requests access to both your camera and microphone. The developer says camera access is for "Camera access lets you scan and verify documents as well as use for support". Microphone access is for "Microphone access is useful for customer service and support". These permissions are only active when you grant them in iOS Settings.

Does Underdog run in the background?

Yes. Underdog registers 1 background mode, which means it can perform certain tasks when you're not actively using it.

What are some alternatives to Underdog?

Other sports apps include 18Birdies , 365Scores , Action , Alt , Arccos , and MLB . Each app takes a different approach to sports and varies in its data collection and SDK usage.

Sports · Privacy report

Underdog Sports

Free · ★4.8 · Underdog Sports, Inc.

Is Underdog safe?

It leans heavily on third-party trackers.

Our take. Underdog is built with more third-party tracking code than 87% of the sports we have scanned, including an analytics SDK from Israel.

Privacy footprint · vs 117 sportsHeavy

Trackers from other companies11 · a lot

typical sports: 5

Data the app links to you6 types · some

typical sports: 4 · from its own privacy label

What it collects about you

Underdog links 6 categories of your data to you.

From the developer's own App Store privacy label. These are the kinds of data Underdog ties to your identity, and it also declares it shares data to track you across other apps.

Financial InfoLocationContact InfoIdentifiersUsage DataDiagnostics

Who else is inside

It carries trackers from 5 companies.

Third-party SDKs found in the app, matched to the company that publishes each. Present in the code; we do not observe what they transmit.

🏢Other third partiesadvertising

A third-party SDK.

SDKs

🇺🇸MetaAdvertising

Facebook advertising SDKs, built to link app activity to Facebook and Instagram ad profiles.

SDKs

🇮🇱AppsFlyerAttribution · Israel

Marketing attribution and audience analytics.

SDKs

🏢Messaging SDKMessaging

Push notification and messaging platform.

SDKs

🇺🇸GoogleAnalytics

Firebase, AdMob and Google analytics SDKs, built to record how you use the app and serve ads.

SDK

How it compares

Where it sits among sports.

Every one of these apps we have scanned, on the two measures above: third-party trackers it carries (across) and data it links to you on its own label (up). Toward the top right is more invasive.

Each dot is one sport app. Underdog sits to the right, carrying more third-party tracking than most.

Other signals

Two more flags.

Each is a fact read straight from the app. The same checks run on every app we scan. Only the ones that apply here are shown.

It declares cross-app tracking

Its own App Store label says it tracks you across other companies apps and websites using your advertising identifier.

It sends analytics to a company in Israel

AppsFlyer is a Israel company. Its analytics SDK is built into the app.

The evidence

What it's built from.

All 17 SDKs in the app, grouped by what they are for. 11 are third-party trackers.

3advertising

2attribution

6analytics

6standard libraries

11 of the 17 are third-party trackers. The rest are the app's own code and standard open-source building blocks.

Show the full SDK list

Other third partiesadvertising

Google Ads Conversion · FullStory · Google App Measurement · Radar Location

MetaAdvertising · USA

Facebook AEM · Facebook SDK

AppsFlyerAttribution · Israel

AppsFlyer · AppsFlyer Migration Helper

Messaging SDKMessaging

Braze · Braze Notifications

GoogleAnalytics · USA

Firebase Analytics

Standard libraries6 · on-device

The app's own code plus open-source interface, storage and networking libraries.

How we know this

Counterspy downloads the app from the App Store and statically analyzes its compiled binary. Embedded SDKs are matched against a signature database and resolved to the company that operates each. We also read the developer's App Store privacy label, which lists the data the app says it collects and links to you. We do not run the app or intercept its traffic, so we report capabilities present in the code and the developer's own disclosures, not proven transmission. We assess privacy and data collection, not malware, security flaws, or developer intent. Reports are automated and never edited for payment. Scan v26.23.0, 2026-04-03.

Third-party trackers are advertising, analytics and attribution SDKs detected by static signature matching. Presence shows a capability is compiled in, not that it ran or transmitted data.
"Data the app links to you" is the count of data categories the developer declares as Data Linked To You in its App Store privacy label. Labels are self-reported and not verified by Apple.
Comparison across the 117 sports in our corpus. Trackers: median 5. Data linked to you: median 4.