Sumi
A notepad where every line is a calculation
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Write lines like "hotel = 128 EUR per night" and see the answer on the right. Change one number and everything below updates. About 160 currencies and 20+ cryptocurrencies, with built-in rates for offline use, plus units, dates, time zones and itemized bill splits. iPhone, iPad and Mac. No account, no subscription.
PH · launched Nov 14, 2026 · 1 upvote (top 65%) · 0 views
Niche: crypto payments and wallet infrastructure · 114 launches, 7 in the last 7 days ▲ +40% · Explore this niche →
Category and tags
- Horizontal
- Workflow automation
- Prosumer
- Not AI
- Commercial product
- iOS
- Mac
- Productivity
Visit website ↗ Source listing ↗
More like this: all 114 launches in crypto payments and wallet infrastructure →
Could you build this?
Yes A line-based calculator notepad is a parser and evaluator with a two-pane UI; currency rates can be bundled as static data for offline use.
Competitors
Other products that read as similar to this one : 288 launches clear the similarity bar, closest 8 shown.
Attention rank: #77 of 289 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 374 days after the earliest competitor.
- Currency Converter : Fast · ph · 2026-10-07 · 1 upvotes · similarity 0.47
- All My Money · ph · 2026-09-22 · 1 upvotes · similarity 0.47
- Advance Converter · ph · 2026-10-06 · 2 upvotes · similarity 0.47
- FX Converter · ph · 2026-09-18 · 1 upvotes · similarity 0.46
- Live Currency Converter · ph · 2026-11-10 · 1 upvotes · similarity 0.46
- INR Crypto Tax Calculator by BtcMedia · ph · 2026-10-27 · 1 upvotes · similarity 0.45
- HotelRoost · ph · 2026-09-22 · 2 upvotes · similarity 0.44
- Cash Calculator · ph · 2026-10-31 · 1 upvotes · similarity 0.44
The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.