The fastest way
to know you'll be OK.

Step one

Five questions. Five minutes.

1. 1How old are you?
2. 2When do you want to retire?
3. 3What do you earn?
4. 4How much have you saved?
5. 5How are you invested?

You see a real projection at minute 5. Add detail later if you want sharper numbers.

Magic moment 2

Drag a slider. Watch the future move.

“What if I retired two years earlier?” “What if I saved an extra $500/month?” “What if returns disappoint?”

Drag the slider. The projection chart re-animates in real time. Other tools make you save scenarios and compare them later. Granary shows you the answer as fast as you can ask the question.

Magic moment 3

No black box. Click any number.

Every figure on the dashboard is auditable. Click your net worth, your cash flow, your retirement readiness — a drilldown opens with the exact formula and the inputs.

Proof, not promises

The math is tested before you ever see it.

• 282 calculation assertions plus 151 unit tests run in the deploy pipeline's build command. If either suite fails, the deploy fails.
• Sources cited inline — Damodaran's 1928–2024 historical record, IRS revenue procedures, the SSA's own reduction and credit formulas.
• Every number drills down to its formula. Audit any figure on any tab — no black box to take on faith.
• A real user caught a state-tax bug. It was fixed within 48 hours — with a regression test added so it can't come back.

Read how the math works →

Privacy

Your data isn't the product.

• Cloud-synced via Google Firestore — your plan follows you across every device you sign in on.
• Encrypted in transit and at rest. Isolated per user by Firebase security rules — no one else can read your data.
• No marketing trackers. No data sold to brokers. Anonymous page counts only — no cookies.
• Daily auto-backup via email (Pro) so you never lose a year of work.
• Delete your account permanently in two clicks. We mean it.