Is Muscle Booster safe to use?

Muscle Booster integrates 52 third-party SDKs spanning infrastructure, analytics, and advertising. Its App Store privacy label declares cross-app tracking via Purchases, Contact Info, Identifiers, and Usage Data. It collects data linked to your identity including Health & Fitness, Purchases, Location, and Contact Info and 5 more categories. It includes 5 advertising or attribution SDKs. Whether this is acceptable depends on your personal privacy preferences.

What permissions does Muscle Booster need?

Muscle Booster requests 7 iOS permissions: App Tracking Transparency, Camera, Photo Library, Calendars, Motion & Fitness, HealthKit (Read), and HealthKit (Write).

What data does Muscle Booster collect?

According to its App Store privacy label, Muscle Booster declares cross-app tracking via Purchases, Contact Info, Identifiers, and Usage Data. It collects data linked to your identity including Health & Fitness, Purchases, Location, Contact Info, User Content, Identifiers, Usage Data, Diagnostics, and Other Data.

How many SDKs does Muscle Booster have?

Muscle Booster integrates 52 third-party SDKs. 4 for advertising, 1 for attribution, 11 for analytics, 2 for crash reporting, 15 for infrastructure, and 15 for other.

Does Muscle Booster use Facebook tracking?

Yes. Muscle Booster includes 3 Facebook SDKs: Facebook AEM, Facebook SDK, and Facebook Core. These are used for ad measurement, attribution, and integration with Facebook's advertising platform (developers.facebook.com).

Does Muscle Booster use Google SDKs?

Yes. Muscle Booster includes 14 Google or Firebase SDKs: Firebase Cloud Messaging, Google Ads Conversion, Firebase A/B Testing, Firebase Analytics, Firebase Core, Firebase Remote Config, Google App Measurement, Google Data Transport, Firebase Crashlytics, Firebase Core Extension, Firebase Core Internal, Firebase Installations, Google Utilities, and GoogleDependencies. These are used for ads, analytics, and cloud services.

Does Muscle Booster use App Tracking Transparency?

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

Does Muscle Booster access your camera?

Muscle Booster requests access to your camera. The developer says this is for "This allows us to use your camera, so you can take photos for your stories". These permissions are only active when you grant them in iOS Settings.

Does Muscle Booster run in the background?

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

What are some alternatives to Muscle Booster?

Other health & fitness apps include 75 Days Challenge , 75 Hard , Calo , AllTrails , MenuFit , and BetterHelp . Each app takes a different approach to health & fitness and varies in its data collection and SDK usage.

Health & Fitness · Privacy report

Workout Planner Muscle Booster

Free · ★4.6 · WELLTECH APPS LIMITED

Is Muscle Booster safe?

It collects a lot of your data, and shares it with trackers.

Our take. Muscle Booster carries 16 third-party trackers and its own label declares it links 9 categories of your data to you. It collects a lot itself, and shares a lot with outside companies.

Privacy footprint · vs 109 health & fitnessHeavy

Trackers from other companies16 · a lot

typical health & fitness: 6

Data the app links to you9 types · a lot

typical health & fitness: 5 · from its own privacy label

What it collects about you

Muscle Booster links 9 categories of your data to you.

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

Health & FitnessPurchasesLocationContact InfoUser ContentIdentifiersUsage DataDiagnosticsOther Data

Who else is inside

It carries trackers from 7 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.

🇺🇸GoogleAnalytics

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

SDKs

🇺🇸MetaAdvertising

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

SDKs

🏢Other third partiesadvertising

A third-party SDK.

SDKs

🏢Monitoring SDKAnalytics

Crash and performance monitoring.

SDKs

🇮🇱AppsFlyerAttribution · Israel

Marketing attribution and audience analytics.

SDK

🇺🇸AmplitudeAnalytics

Product analytics, built to record detailed behaviour inside the app.

SDK

🏢Analytics SDKAnalytics

A product analytics platform.

SDK

How it compares

Where it sits among health & fitness.

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 health & fitnes app. Muscle Booster 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 52 SDKs in the app, grouped by what they are for. 16 are third-party trackers.

4advertising

1attribution

11analytics

2crash reporting

1push & messaging

33standard libraries

16 of the 52 are third-party trackers. One is a push-notification SDK that delivers notifications, rather than tracking you across apps. The rest are the app's own code and standard open-source building blocks.

Show the full SDK list

GoogleAnalytics · USA

Firebase A/B Testing · Firebase Analytics · Firebase Core · Firebase Remote Config · Google Data Transport

MetaAdvertising · USA

Facebook AEM · Facebook SDK · Facebook Core

Other third partiesadvertising

Google Ads Conversion · AWS Pinpoint · Google App Measurement

Monitoring SDKAnalytics

Datadog · Datadog RUM

AppsFlyerAttribution · Israel

AppsFlyer

AmplitudeAnalytics · USA

Amplitude

Analytics SDKAnalytics

Segment Analytics

Push & messaging1 · notifications

Standard libraries33 · 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 v3.71.0, 2026-04-04.

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 109 health & fitness in our corpus. Trackers: median 6. Data linked to you: median 5.