Round-ups
The spare change engine
Nothing is skimmed off your purchase. Each order simply rounds up to the next whole dollar, and that difference becomes an investment instead of a rounding error.
Worked examples
- Order of $43.29+0.71 USDG
- Order of $89.42+0.58 USDG
- Order of $112.75+0.25 USDG
- Order of $268.40+0.60 USDG
Average capture across a typical month of ~35 orders: roughly 17 USDG.
Where it lands
- ARCTArcusteum$0.42
- AAPLApple Inc.$214.32
- NVDANVIDIA Corp.$118.47
- TSLATesla Inc.$245.90
Fractional units are supported, so a 0.58 USDG round-up still buys a slice.
The mechanism
Search. Compare. Refine.
Describe a product, compare the results, and ask follow-up questions to narrow your search.
Search
Query every connected marketplace at once — as a human in the browser, or as an agent over MCP.
Compare
Live prices, ratings and a round-up preview on every card, so the true cost is visible before you commit.
Refine
Pay in USDG. Spare change pools automatically and swaps into your chosen asset at your threshold.
Simulation log
Run the simulation to watch spare change compound.