The Tide Simulator
About The Tide Simulator
The Tide Simulator is a Google Sheets⢠add-on created by AT1 Research. It is designed to help users run Monte Carlo simulations directly inside Google Sheets⢠for modeling, forecasting, and scenario analysis.
AT1 Research also operates:
BeatingTheTide.com
RankedStocks.com
If you use The Tide Simulator, you agree to the Privacy Policy, Substackâs Terms of Service and my Terms of Service.
Help
How to install
Install The Tide Simulator from the Google Workspace⢠Marketplace, then open any Google Sheets⢠and launch it from the Extensions menu.
How to use
Open a Google Sheetsâ˘.
Go to Extensions > The Tide Simulator > Open Tide Simulator.
Add your input assumptions.
Choose probability distributions for each input.
Select the forecast output cell.
Configure the simulation settings.
Run the simulation.
Review the generated result tabs:
AT1 Simulations
AT1 Distribution
AT1 Analytics
What the output tabs mean
AT1 Simulations: the raw simulation results
AT1 Distribution: output distribution summaries and charts
AT1 Analytics: scenario, sensitivity, and summary analytics
Support
If you need help, have a question, or want to report a problem, contact:
support@rankedstocks.com
Report an Issue
To report a bug or issue with The Tide Simulator, email:
support@rankedstocks.com
Please include:
your Google⢠account email
a description of the issue
the spreadsheet context
screenshots if relevant
the steps needed to reproduce the issue
Contact
AT1 Research
Email: george@beatingthetide.com
Website: https://www.beatingthetide.com
Financial Disclaimer
The Tide Simulator is intended for educational, informational, and analytical use only. Nothing in the tool, on this page, or on related AT1 Research websites should be interpreted as investment advice or a recommendation to buy or sell any security.
You are solely responsible for your own investment decisions, financial models, and research conclusions.
Privacy Policy
This privacy policy describes how the Tide Simulator Google Sheets add-on (âTide Simulatorâ, âthe add-onâ, âweâ, âourâ) handles information when you install and use it inside Google Sheets. Tide Simulator is published and operated by Iyad George Atuan (âthe developerâ).
1. Scope of the add-on
Tide Simulator is an editor add-on for Google Sheets that runs Monte Carlo simulations on the spreadsheet you have open. It runs entirely on Googleâs Apps Script infrastructure and is invoked from the Sheets Extensions menu.
2. Information we access
When you run the add-on, it accesses only the following:
Cell data in the active Google Sheet you have open. This is required to read your inputs (assumptions, ranges, correlations) and to write simulation outputs back to the same sheet. Access is granted by the Google OAuth scope https://www.googleapis.com/auth/spreadsheets.currentonly, which restricts access to the single spreadsheet the user has open at the time the add-on is invoked. The add-on cannot see, list, or open any other spreadsheet in your Drive.
The add-on UI in your browser, granted by https://www.googleapis.com/auth/script.container.ui, which is required to render the add-on sidebar and dialogs.
Apps Script execution context, granted by https://www.googleapis.com/auth/script.scriptapp, which the add-on uses to run simulations and manage triggers within Apps Script.
Your basic Google account profile and email address (userinfo.profile, userinfo.email), which Google adds by default to the OAuth consent screen for any add-on. We use these only to identify your session inside the add-on; we do not store, sell, share, or transmit them anywhere outside the Google environment your add-on is running in.
The add-on does not request, and does not have, access to Gmail, Drive (other than the open spreadsheet), Calendar, Contacts, or any other Google Workspace data.
3. How information is used
All processing happens transiently inside Google Apps Script while the add-on is running. Inputs are read from the active sheet, the simulation runs, and the outputs are written back to the same sheet. We do not transmit your spreadsheet contents to any external server, third-party API, analytics service, or AI/ML training pipeline.
4. Data retention
Tide Simulator does not maintain a server or external database. We do not retain any copy of your spreadsheet data after the add-on finishes running. The only persistence is whatever the add-on writes back into your own spreadsheet at your request, which remains entirely under your control inside your Google Drive.
5. Data protection mechanisms for sensitive data
Although Tide Simulator only uses non-sensitive Google OAuth scopes and only reads the spreadsheet you have open, we apply the following data protection mechanisms to any user data the add-on touches:
Encryption in transit: All communication between your browser, Google Sheets, and Apps Script occurs over TLS/HTTPS, which is enforced by Googleâs infrastructure.
Encryption at rest: Any data the add-on reads or writes resides in Google Sheets, which Google encrypts at rest as part of Google Workspace.
Least-privilege scopes: The add-on requests the narrowest possible OAuth scope, spreadsheets.currentonly, so it can only access the single spreadsheet the user has open at that moment, never the userâs full Drive.
No external data egress: The add-on does not call any third-party API, does not send data outside the Google Apps Script execution sandbox, and does not log spreadsheet contents.
No persistent storage by us: We do not run a backend server and do not store user data after a simulation completes.
Access control: Only the authenticated user who invoked the add-on can trigger it on their own spreadsheet. The developer cannot access any userâs spreadsheet data.
Code review and updates: The add-on code is maintained in a private source repository, reviewed before each release, and deployed through versioned Apps Script deployments tied to the Google Workspace Marketplace listing.
6. Sharing of information
We do not sell, rent, or share user data with third parties. We do not transfer Workspace API data to a third party except as necessary to provide or improve user-facing features of the add-on, comply with applicable law, or as part of a merger, acquisition, or sale of assets, and only with notice to affected users.
7. Use of Google user data and Limited Use compliance
Tide Simulatorâs use of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements.
The use of raw or derived user data received from Workspace APIs will adhere to the Google User Data Policy, including the Limited Use requirements.
Specifically, Tide Simulator does not:
transfer user data to any third party except as needed to provide or improve user-facing features of the add-on;
use user data to serve advertisements;
allow humans to read user data, except (a) with the userâs affirmative consent for specific messages, (b) when necessary for security purposes such as investigating abuse, (c) to comply with applicable law, or (d) where the data has been aggregated and is used for internal operations in accordance with applicable privacy laws;
use user data obtained through Workspace APIs to develop, improve, or train generalized AI or ML models.
8. Children
Tide Simulator is a financial-modelling tool intended for adult users. It is not directed to children under 13 and does not knowingly collect data from them.
9. Changes to this policy
We may update this policy from time to time. The âEffective dateâ at the top of the policy reflects the date of the most recent change. Material changes will be communicated via the Marketplace listing.
10. Contact
Questions about this privacy policy or about Tide Simulatorâs data practices can be sent to: george.atuan.cfa@gmail.com.