1. Overview
Calculator Z, package name com.nexdevlab.calculatorz, is provided by NexDevLab, an independent app studio operated by Aidid Alam in Bangladesh. This policy applies to the Calculator Z Android application and this product website.
Calculator inputs and results are not sent to NexDevLab servers. Third-party services may process device, usage, advertising, and normal network information for analytics, ads, exchange rates, configuration, and Google Play features.
2. Information handled on your device
Calculator inputs, results, temporary history, theme choices, the last calculator opened, review eligibility, ad timing preferences, and cached exchange rates may be stored or processed locally on your device.
Health-calculator inputs such as age, sex, height, weight, and activity level are used to produce estimates on your device and are not uploaded to NexDevLab servers. Depending on your Android backup settings, some application preferences may be included in Android backup or device-transfer services managed by your device or platform provider.
3. Exchange rates
The Currency Converter requests exchange-rate data from ExchangeRate-API. The provider receives normal network information, including your IP address and request metadata. Rate data is cached locally for up to six hours to reduce network use.
Review the provider’s terms and privacy information.
4. Firebase and Google Play services
Calculator Z uses Firebase Analytics to understand screen use and which calculators are opened. Firebase Remote Config selects application configuration such as the active advertising provider. Depending on the service and configuration, Firebase may process app interactions, installation identifiers, device and app information, diagnostics, country, language, and time-zone information.
Calculator Z also uses Google Play’s native in-app review service. Google controls whether the review interface appears and handles information submitted through it.
Learn more from the Firebase privacy documentation and Google Privacy Policy.
5. Advertising and consent
Calculator Z contains advertising supplied by Google AdMob or Meta Audience Network. Firebase Remote Config may select which supported ad platform is active. Advertising providers may process advertising identifiers, IP address, device and app information, interactions, approximate location inferred from network information, and diagnostics to provide, measure, personalize, secure, and limit ads.
Where required, Calculator Z requests consent before requesting ads and offers an in-app Ad privacy control. Your Android settings may also provide controls for the advertising identifier and ad personalization.
6. Why information is processed
Information may be processed to:
- provide calculator features and retrieve exchange rates;
- remember preferences and cached information;
- measure and improve app performance and reliability;
- select application and advertising configuration;
- provide advertising, consent controls, and fraud prevention; and
- support Google Play functionality.
NexDevLab does not sell the calculator entries you type.
7. Retention, deletion, and security
Temporary calculator history can be cleared inside the app. Cached exchange rates expire after six hours and are replaced when refreshed. Other local preferences remain until cleared through Android settings or the app is uninstalled, subject to Android backup and restore behavior. Third-party providers retain information according to their own policies and legal obligations.
Network requests made directly by Calculator Z use HTTPS encryption in transit. No internet transmission or storage system can be guaranteed to be completely secure.
8. Children
Calculator Z is not directed to children under 13. NexDevLab does not knowingly request names, email addresses, or account information from children through the app.
9. Health and financial estimates
Health and financial calculators provide general estimates only. Calculator Z is not a medical device and does not diagnose, treat, cure, or prevent any medical condition. Consult a qualified healthcare professional for medical advice, diagnosis, or treatment. Financial results are not financial, tax, investment, or lending advice.
10. Changes and contact
This policy may be updated when Calculator Z, its service providers, or legal requirements change. The effective date above identifies the latest version.
NexDevLab
Calculator Z privacy support
Aidid Alam · Dhaka, Bangladesh