SaaS alternative · Personal Finance
Replace Undebt.it Pro / YNAB.
One .xlsx file. Paid once.
Undebt.it Pro / YNAB runs about $12/mo — that's $144/yr for as long as you keep paying. The Debt Payoff Planner is one Excel file you pay $7 for once. Over 10 years you keep roughly $1,433.
Side-by-side
| Undebt.it Pro / YNAB | Debt Payoff Planner | |
|---|---|---|
| Cost | $7 once | |
| 10-year cost | $7 | |
| Format | Web app · mobile app | .xlsx file · Excel / Sheets / Numbers |
| Your data lives | On their server | On your computer |
| Works offline | No | Yes |
| Cancel = lose access? | Yes | No — own forever |
| Edit any formula? | No | Yes — every cell |
| Live bank sync | Usually yes | No — manual entry |
| Phone-first workflow | Yes | Limited — desk-and-keyboard |
Honest read: if you mostly use Undebt.it Pro / YNAB for live bank sync and phone tracking, stay where you are. If you use it for the weekly numbers and dashboards it shows you — the Excel workbook does that part for $7.
What you'd be switching to
Personal Finance · · .xlsx
Debt Payoff Planner
Replaces Undebt.it Pro / YNAB debt module (~$12/mo). Snowball + avalanche payoff system — NPER-based months-to-payoff per debt, total interest cost projection, and side-by-side strategy comparison. Make extra-payment decisions with the math in front of you, not a paywalled chart.
Switch in 3 steps
-
01
Export your data from Undebt.it Pro / YNAB
Most apps have an export-to-CSV option in Settings. Grab the last 12 months at minimum so your historical trends carry over.
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02
Paste it into the workbook
Open Debt Payoff Planner in Excel, Google Sheets, or Numbers. Drop your CSV into the input sheet. The dashboards recompute automatically.
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03
Cancel Undebt.it Pro / YNAB
You're saving ~$144 a year, forever. Your data lives on your computer now.
Things people ask
Will an Excel workbook really do everything Undebt.it Pro / YNAB does?
No — that's honest. Undebt.it Pro / YNAB has features a spreadsheet can't match (live bank sync, mobile app, AI assistance). What the workbook does is the core math you actually use weekly. If you're paying $12/mo mostly for features you never open, switching saves you $144/yr. If you genuinely use the platform-specific features, stay where you are.
What's the catch with paying $7 once vs $12/mo?
No catch. The workbook is a .xlsx file you download and own. There's no expiry, no account, no cloud lock-in. You enter your own data manually — that's the friction trade. Over 10 years you'd pay Undebt.it Pro / YNAB roughly $1,440. The workbook costs $7 once, so you keep ~$1,433.0.
What spreadsheet apps does it open in?
Microsoft Excel, Google Sheets, and Apple Numbers — all three open .xlsx natively. Google Sheets and Apple Numbers are free. You don't need an Excel subscription.
How do I switch from Undebt.it Pro / YNAB?
Three steps: (1) export your historical data from Undebt.it Pro / YNAB as CSV, (2) open the gridmoo workbook and paste the data into the input sheets, (3) cancel your Undebt.it Pro / YNAB subscription. Most users finish the switch in 30–60 minutes.
Why Excel.
You already have it.
It opens offline.
Your data stays on your machine.
Every formula is readable.
No subscription. No login. No platform.
Microsoft Excel, Google Sheets, and Apple Numbers all open .xlsx files for free. Sheets and Numbers are free outright.
What this isn't: a phone app, a quick-tap logger, or a real-time collaboration tool. These are desk-and-keyboard files for weekly reviews and monthly numbers.