IdeaRubric.

Privacy & Trust

How we handle your data, in plain language.

Last updated: May 16, 2026

TL;DR

If something on this page is unclear, email us at hello@dualspark.io and we'll explain plainly.


What we collect

When you sign up, we collect your name, email, and password (stored hashed, never in plaintext).

When you submit an idea for evaluation, we store the title, summary, and full description you provide. When the evaluation runs, we store the per-phase analysis Claude returns and the resulting scores.

When you buy credits, we store a record of the transaction (date, amount, balance after), but we never see or store your card number. Card details are handled entirely by Stripe.

When you log in, we record the timestamp.

We do not collect your IP address for analytics, set tracking cookies, or run third-party analytics scripts (Google Analytics, Hotjar, Facebook Pixel, none of these). The only cookies we set are the session cookie that keeps you logged in.

What we do with it

We use your information for one purpose: to run IdeaRubric for you. Specifically:

That's the full list.

What we don't do with it

Legal basis for processing

We process your information:

Third-party services we use

To run the product, we share specific data with three companies:

Service What they get Why
Anthropic Your idea text + the evaluation prompt To generate the AI evaluation
Stripe Your name, email, card details, and purchase amount To process credit-pack payments
Resend Your email address and the contents of transactional emails To deliver verification codes and password resets

We do not work with any other third-party processors.

About Anthropic specifically

Your idea text is sent to Anthropic's Claude API to be evaluated. Per Anthropic's commercial API terms, inputs and outputs from API calls are not used to train Anthropic's models. Anthropic retains API request data for a limited period for abuse-prevention and trust-and-safety purposes. We have not enabled any opt-in features that would allow Anthropic to use your data for training.

If Anthropic's data-use policies change in a way that affects you, we will update this page and notify users by email before the change takes effect.

Where your data lives, and for how long

We currently store IdeaRubric data on infrastructure located in the United States.

We keep your data as long as your account is active. If you delete your account, we delete:

Deletion from our active systems is immediate and permanent. We don't maintain a "soft delete" or recovery mechanism, so make sure you've exported anything you want to keep first.

We retain a small audit log entry (record IDs and a timestamp of the deletion action) for accountability purposes. This log contains no idea content, names, or emails after a deletion.

Routine database backups are retained per our hosting provider's standard policy. Residual encrypted backup copies may persist temporarily until overwritten through routine backup rotation, after which your data is unrecoverable.

Security

While we take reasonable measures to protect your data, no system can guarantee absolute security. If you become aware of a vulnerability or unusual account activity, email us at hello@dualspark.io and we'll investigate.

Your rights

You can:

We don't sell or share your data, so there is nothing to opt out of in the GDPR/CCPA "do not sell" sense.

Children

IdeaRubric is not intended for use by anyone under 16. We don't knowingly collect data from children. If you're under 16, please don't sign up.

Changes to this page

If we materially change how we collect or use data, we will:

  1. Update this page.
  2. Update the "Last updated" date at the top.
  3. Email everyone with an active account at least seven days before the change takes effect.

We will not retroactively use existing data in ways the version of this page in effect at the time of collection didn't permit.

Contact

IdeaRubric is operated by Dual Spark LLC (Mohamed Hamdouchi, Rafael Hernandez), United States.

For privacy questions or to exercise any right above: