Studio JB respects your privacy. We collect only what is needed to operate our website, provide app features, understand product usage, and measure our own advertising. We do not sell personal data or use app data to track people across other companies' apps and websites.
Last updated: August 12, 2026.
Data collection
Depending on the app and features used, Studio JB may process a random installation-level user identifier, app and operating-system information, product interactions, purchase and subscription status, and Apple Ads attribution information. Workout analytics may include round settings, planned or elapsed duration, completion status, paywall interactions, and purchase-flow outcomes. We do not send workout names, contact details, payment-card information, precise location, photos, microphone recordings, or health records to the services described below.
Information you provide when contacting support, such as your email address and message, is used to respond to your request.
How information is used
We use information to deliver and restore paid access, validate purchases, prevent fraud, operate paywalls, understand feature and workout usage, diagnose purchase-flow problems, improve product quality, and measure the performance of Studio JB's Apple Ads campaigns.
Service providers
RevenueCat
RevenueCat processes an app user identifier, App Store receipt and transaction information, product identifiers, subscription or lifetime-access status, and related technical information. We use it to display purchase options, validate purchases, restore access, manage entitlements, and analyze subscription performance. RevenueCat does not receive payment-card details entered through Apple. Read RevenueCat's Privacy Policy.
PostHog
PostHog receives a random app user identifier, app and device properties such as app version, operating system and locale, application lifecycle events, and the product events described above. We use PostHog for product analytics only. Automatic screen capture, element autocapture, surveys, and session replay are disabled in Boxing Timer · Rocky. Read PostHog's Privacy Policy.
Apple Ads attribution
On supported Apple devices, the app may request an AdServices attribution token and Apple may return campaign, ad-group, keyword, and conversion attribution details. The app sends those details, a random app user identifier, the app identifier, and the device's locale country code to Studio JB's server to calculate campaign performance and return on advertising spend. This implementation does not access the IDFA and is not used for cross-app tracking or third-party advertising.
Our apps
Glu Glu
Glu Glu helps users track water intake, streaks, and hydration progress. Hydration entries and progress insights are intended for personal use inside the app. Analytics, crash reporting, and subscription-related processing are limited to operating and improving the product.
Round Timer
Boxing Timer · Rocky stores workout history, saved workouts, statistics, and preferences locally on the device. It uses RevenueCat for purchases and Pro access, PostHog for limited product analytics, and Apple AdServices plus Studio JB's server for Apple Ads attribution as described above.
Self Confidence
Self Confidence is designed to operate with minimal personal data. App-specific details will be documented here as its features evolve.
Tabata Timer
Tabata Timer is designed to operate with minimal personal data. App-specific details will be documented here as its features evolve.
Ideas
Ideas is designed to operate with minimal personal data. App-specific details will be documented here as its features evolve.
BetterWords
BetterWords is designed to operate with minimal personal data. App-specific details will be documented here as its features evolve.
Circa
Circa processes Apple Health sleep and resting-heart-rate records, Screen Time selections, routines, and preferences locally on the device. Health values and Screen Time selections are not sent to Studio JB or analytics providers. Circa uses limited analytics for taps on Discover product links. Read the complete Circa Privacy Policy.
Retention and deletion
Local app information remains on the device until it is deleted in the app or the app is removed. Purchase records may be retained as necessary to provide and restore paid access, meet accounting requirements, prevent fraud, and resolve disputes. Analytics and attribution information is retained only as long as reasonably necessary for product and campaign analysis. You can request deletion of information associated with your installation-level identifier by contacting Studio JB. Apple purchase records remain subject to Apple's own retention obligations.
International processing and security
RevenueCat, PostHog, Apple, and Studio JB infrastructure may process information in countries other than the one where you live. We use reputable service providers and reasonable technical and organizational safeguards, but no transmission or storage system can be guaranteed completely secure.
Contact
For access, correction, deletion, or any privacy-related request, email jbdelcros@gmail.com. To help locate app analytics, include the app name and your installation identifier if it is available in the app's diagnostics.