This policy applies to all apps published by RJ App Studio on the Google Play Store.
RJ App Studio ("we", "our", "us") is an independent app developer based in India. This Privacy Policy describes how we handle information in connection with the mobile applications we publish on Google Play Store, including but not limited to:
By installing or using any of our apps, you agree to the practices described in this policy. If you do not agree, please uninstall the app and discontinue use.
Our apps are utility tools designed to perform local calculations. We do not operate any servers, databases, or backend infrastructure that receives your data. The only third-party service integrated into our apps is Google AdMob for advertising, which is disclosed fully in Section 03.
The table below provides a complete picture of data flows in our apps:
| Data type | Collected by us | Collected by AdMob | Purpose |
|---|---|---|---|
| Loan / EMI / investment inputs | Never | Never | Used only for on-device calculation; discarded on exit |
| Electricity / power consumption inputs | Never | Never | On-device calculation only |
| Name, email, or personal identity | Never | Never | Not required; not requested |
| Google Advertising ID (GAID) | Never | Yes | Ad personalisation and frequency capping |
| Device model & OS version | Never | Yes | Ad rendering and compatibility |
| IP address | Never | Yes | General location inference for ad targeting |
| App interaction events (ad impressions, clicks) | Never | Yes | Ad performance measurement |
| Device language & locale | Never | Yes | Ad localisation |
| Crash reports / analytics | Never | Never | No analytics SDK integrated |
| Location (GPS) | Never | Never | Not requested; not used |
| Contacts, camera, microphone, files | Never | Never | Permissions not requested |
Summary: RJ App Studio collects zero data. All user inputs are processed locally on your device and are never transmitted anywhere. The only data collection that occurs is by Google AdMob as described in Section 03.
Our apps are free to use and are supported by advertising through Google AdMob, a service provided by Google LLC. AdMob enables us to show ads to users without charging for the app.
The following ad formats are used across our apps:
To serve these ads, AdMob's SDK automatically collects certain technical data as listed in Section 02. This data is processed by Google in accordance with Google's own privacy policy. We have no access to this data — it goes directly to Google's servers.
You can review how Google handles AdMob data at the links below:
To opt out of personalised ads on Android:
Android 12+: Settings → Google → Ads → Delete advertising ID
Android 11 and below: Settings → Google → Ads → Opt out of Ads Personalisation
After opting out you will still see ads, but they will not be personalised based on your interests.
By RJ App Studio: We do not collect any data, therefore we do not use any data. All calculations performed in our apps (EMI, SIP, electricity bill, power consumption, solar estimates, etc.) are executed entirely on your device using local code. No result or input is ever sent to us.
By Google AdMob: The technical data collected by AdMob (advertising ID, device info, IP address) is used solely for:
AdMob does not have access to any financial figures, electricity consumption data, or any other values you enter into our calculators. These remain entirely on your device.
RJ App Studio does not share, sell, rent, or trade any personal information with third parties — because we collect none.
The only third-party data flow is from your device directly to Google AdMob's servers, which operates independently under Google's privacy policy. We are not a party to that data exchange and cannot access or control it beyond choosing to integrate AdMob into our apps.
We may disclose information in the following exceptional circumstances:
Our apps request only the minimum Android permissions necessary to function and display ads. The complete list of permissions and their purpose is shown below:
| Permission | Why it is needed | Who uses it |
|---|---|---|
INTERNET |
Required to fetch and display Google AdMob advertisements | AdMob only |
ACCESS_NETWORK_STATE |
Allows AdMob to check network availability before attempting to load an ad, preventing unnecessary retry loops | AdMob only |
Permissions we do NOT request: camera, microphone, precise or approximate location (GPS), contacts, phone state, read/write external storage, Bluetooth, biometrics, or any other sensitive permission. If any future app update requires an additional permission, this policy will be updated and the change will be explained in Play Store release notes.
Data retained by RJ App Studio: None. We hold no personal data, so there is nothing to delete.
Data stored locally on your device: Some apps may store your preferences (such as selected state, default load settings) using the device's local storage (Android SharedPreferences or equivalent). This data never leaves your device. You can clear it at any time by:
Data held by Google AdMob: For requests to delete data held by Google, please visit myaccount.google.com/data-and-privacy. You can also reset your Google Advertising ID at any time from Android device settings, which effectively creates a fresh profile with no history.
Our apps are general-purpose utility tools not specifically directed at children under the age of 13 (or under the age of 18 where the Indian Digital Personal Data Protection Act 2023 applies additional protections for minors).
We do not knowingly collect personal data from children of any age. Because we collect no personal data from any user, children are subject to the same data treatment — which is none — as adult users.
With respect to advertising: our apps are configured in AdMob as general-audience apps, not directed at children. We do not use the "child-directed" treatment setting which would disable personalised ads, as our apps are general-audience financial and utility tools. Parents who prefer that their children not see personalised ads can delete the Advertising ID on the child's device (see Section 09).
If you are a parent or guardian and believe your child under 13 is using our apps and you have concerns about any data collection, please contact us at officialrjappstudio@gmail.com. We will investigate and take appropriate action promptly.
Under applicable laws including India's DPDP Act 2023 and general data protection principles, you have the following rights:
Since RJ App Studio does not collect or store personal data, the primary security consideration is the safety of your locally stored preferences and the integrity of the app itself.
We take the following measures to protect users:
No method of electronic storage or transmission is 100% secure. However, because we hold no personal data, the risk to users from any breach of our systems is negligible — there is nothing of personal value to breach.
We may update this Privacy Policy from time to time to reflect changes in our apps, advertising integrations, or applicable law. When we do:
Continued use of any of our apps after a policy update constitutes your acceptance of the revised policy. We encourage you to review this page periodically, particularly after app updates.
For any questions, concerns, or requests relating to this Privacy Policy or our data practices, please reach out to us:
Email: officialrjappstudio@gmail.com
Website: rjappstudio.in
We aim to respond to all privacy enquiries within 48 hours. As we hold no personal data, most requests will receive a prompt confirmation response.
This Privacy Policy is governed by the laws of India, including the Information Technology Act 2000, the Information Technology (Reasonable Security Practices) Rules 2011, and the Digital Personal Data Protection Act 2023. Any disputes shall be subject to the jurisdiction of competent courts in India.