Privacy Policy
Effective: July 15, 2026 / Last updated: July 19, 2026
DROPPER runs entirely in your browser. We operate no server of our own, and we never collect, store, or transmit your data.
1. Operator
- Operator: Shigeyoshi (independent developer)
- Contact: movie.pingpong@gmail.com
2. Our approach
DROPPER runs only in your browser. Nothing it reads and no file you drop is ever sent to a server of ours — we do not operate one. All processing happens within your own Google account.
3. How we handle Google user data
With your permission, DROPPER accesses Google services within the following scopes.
| Scope | Why it is needed |
|---|
Create and edit Google Calendar events
(calendar.events) | To add the dates read from your event document or schedule to your own calendar. |
Access to files this app creates
(drive.file) | To read the text from your event document or schedule (OCR) and save the document to your own Google Drive. |
App-specific data folder
(drive.appdata) | To remember which folder your files are saved in, so the same folder is reused across your devices (for example, phone and computer). |
- All of this data is processed inside your own Google account. We never receive any of it.
- drive.file is limited to files this app itself creates. It cannot see the rest of your Google Drive.
- Temporary files created for text recognition (OCR) are deleted immediately after the text is read.
4. About the AI feature (Gemini)
When the AI feature is used, the text read from your event document or schedule — or the file itself (PDF or image) — is sent to Google's Gemini API. Whether to use this feature is entirely your choice.
- Using AI is opt-in. After you sign in, a dialog asks you to choose "Use AI" or "Do not use AI".
- Only if you choose "Use AI" is the text read from your event document or schedule — or the file itself (PDF or image) — sent to Google's Gemini API.
- The request uses an API key that you obtain yourself. The key is stored only on your own device (in your browser's localStorage) and is never sent to us.
- Data sent to the Gemini API is handled under Google's own policies.
- If you choose "Do not use AI", no text is sent anywhere outside your browser and your own Google account.
5. Data Sharing and Third-Party Disclosure
Dropper does not sell, share, or transfer your Google user data to us or to any third party. Dropper has no server and never receives this data in the first place.
- The only exception is when you choose "Use AI". Only then is the text read from the event document or schedule — or the file itself (PDF or image) — sent to Google's Gemini API using your own API key. This is a direct transmission between you and Google, based on your choice, and does not pass through us.
- Data sent to the Gemini API is handled in accordance with Google's Privacy Policy.
- Apart from the above, we never disclose Google user data to any advertiser, analytics provider, or other third party.
6. Data Protection
Dropper uses the following mechanisms to protect your data:
- All communication takes place over an encrypted connection (HTTPS).
- Because Dropper has no server, your data is never stored under our control and is not exposed to external breaches on our side.
- Your Gemini API key and settings are stored only on your device (in the browser's localStorage) and are never transmitted to us or anyone else.
- All access to Google services and the Gemini API takes place under the authentication and authorization of your own Google account.
7. Data Retention and Deletion
Because Dropper has no server, we do not retain any of your Google user data. Only the following information is stored on your device (in the browser's localStorage), and we cannot access it:
- Whether you chose to use the AI feature
- Your Gemini API key (only if you chose to use AI)
- Information about the destination folder
You can delete this data at any time in the following ways:
- Temporary files created for text recognition (OCR) are deleted immediately after reading.
- Events created in your Google Calendar and event documents or schedules saved to your Google Drive are managed by you and can be deleted from Google at any time (Dropper has no delete function).
- The API key and settings stored on your device can be deleted at any time from your browser settings.
- You can revoke Dropper's access to your Google account at any time from your Google Account security settings.
8. Pricing
DROPPER is currently provided free of charge, and we do not collect or store any payment information. If paid features are introduced in the future, this policy will be revised and the change announced.
9. Compliance with the Google API Services User Data Policy
DROPPER's use and transfer of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements.
10. Changes to This Policy
Any changes to this policy will be posted on this page. If a change is significant, it will also be announced within the tool.
11. Analytics
Dropper uses the following tools to understand site usage for the purpose of improving the service. These handle statistical information about site browsing and are unrelated to the contents of your Google Calendar or Drive (Google user data).
- Google Analytics: collects statistics such as page views and referrers using cookies. The information collected is anonymized usage statistics and does not identify individuals. Data is handled in accordance with Google's Privacy Policy.
- Visitor counter (hits.sh): counts and displays the number of page views. It does not use cookies.
- If you do not wish to allow cookies, you can disable them in your browser settings or use the Google Analytics Opt-out Add-on.
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