Frequently asked questions

Last updated: June 2026

What is FireFlyer?

FireFlyer is a personal net-worth and investment-portfolio tracker. It lets you bring together all your assets (stocks, ETFs, crypto, precious metals, savings, real estate, loans) and watch your wealth evolve over time, including a financial-independence simulation (the FIRE method).

Is my data safe?

Yes. Your data is stored in a PostgreSQL database hosted on Railway (encrypted at rest). Sensitive values are encrypted server-side, all traffic is protected by HTTPS, and we enforce strict security headers (CSP, HSTS), CSRF protection and rate limiting. See our Privacy Policy for details.

Where do the prices come from?

Prices for listed assets come from Yahoo Finance and Financial Times Markets. Only public identifiers (ISIN, ticker symbols) are sent to these services — no personal data is shared.

Which asset types are supported?

Stocks and ETFs, cryptocurrencies, precious metals, savings accounts, loans/credit, real-estate holdings, and manually entered "exotic" assets. Each class has its own tracking and appears in the summary and the PDF export.

How do I add an asset?

In the app, open your portfolio, click "Add asset", then enter its ISIN or ticker symbol, quantity and purchase price. You can also import a CSV file (max 500 rows / 500 KB).

What's the difference between Free and Pro?

The Free plan lets you track up to 10 assets, no credit card required. The Pro plan (€2/month, cancel anytime) unlocks an unlimited number of assets and advanced features. See the pricing page.

How do I upgrade to Pro?

Payment is securely handled by Stripe. In the app, click "Go Pro": your subscription activates immediately after payment and you receive a confirmation email.

How do I cancel my subscription?

You can cancel anytime from your Stripe billing portal. Your Pro access remains active until the end of the period you've already paid for, with no renewal.

How do I export or delete my data?

In line with the GDPR, you can export all of your data or permanently delete your account at any time from the app settings. Deletion removes your portfolio data as well as your identity (email, name).

Do I need a special account to sign in?

Sign-in is done through your Google account. We never store a password. You must be at least 18 years old.

I didn't find my answer

Get in touch, we're happy to help: see the support page.