Unit 3: Check its math · Lesson 2 of 4 · about 6 min

Find software you pay for twice

Your card statement is full of small monthly charges. You want to know what you spend, what overlaps, and what you have stopped using.

You're practising: Adding up subscriptions correctly, spotting overlaps and unused tools, and drafting a cancellation without cancelling anything.

The mistake to catch: AI totals look right and are often wrong. Make it show the math.

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1. Open the prompt

Open Track recurring software spend and idle chargesand copy its prompt into your AI. Any AI works.

2. Give it this sample data

Monthly subscriptions (sample):
- Canva Pro: $15.00 - used this week
- Zoom Pro: $15.99 - last used 2 months ago
- Google Workspace (includes Google Meet): $14.00 - used daily
- Notion: $10.00 - used daily
- Trello: $5.00 - used weekly
- Adobe Express: $9.99 - last used 4 months ago
- Loom: $15.00 - last used 5 months ago
- Calendly: $12.00 - used daily

Your task: Ask your AI for a table with the monthly total, the tools that overlap, the ones you are not using, and one draft cancellation message. Nothing gets cancelled.

3. Paste your AI's answer

Checked in your browser with plain rules. Your answer isn't sent or stored anywhere.

+20 XP · 1-day streak

Passed. Here's one answer that also passes, to compare

Monthly total: $15.00 + $15.99 + $14.00 + $10.00 + $5.00 + $9.99 + $15.00 + $12.00 = $96.98

Overlaps
- Zoom Pro ($15.99) does the same job as Google Meet, which comes with Google Workspace.
- Trello and Notion both track tasks; worth picking one.

Not used lately
- Loom: 5 months ($15.00/mo)
- Adobe Express: 4 months ($9.99/mo)

Draft (not sent):
Subject: Please cancel my Loom subscription
Hi, please cancel my Loom subscription at the end of the current billing period. Thank you.

Possible saving: $40.98/month if you drop Zoom, Loom and Adobe Express.

Next: Get trip totals right

Ready to use it for real? Set up Track recurring software spend and idle charges.

Challenge a coworker: can their AI pass it too?

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Find software you pay for twice

1. Open the prompt

2. Give it this sample data

3. Paste your AI's answer

Passed. Here's one answer that also passes, to compare

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