Driftspire

Driftspire is a two-in-one pocket bench for everyday quick math. One side works out electrical values; the other finds the real best deal at the shop. It runs fully offline, and every answer can be saved and shared.

Using Ohm Bench:

1. Choose a mode — Ohm's Law, LED, or Combine.
2. For Ohm's Law, type any two of voltage, current, resistance, or power; the other two are solved instantly.
3. For LED, enter the supply voltage, the LED forward voltage, and the current to size the series resistor with the nearest standard value and power rating.
4. For Combine, enter two to four resistor values and pick series or parallel to get the total.

Using Deal Bench:

1. Pick how you are measuring — weight, volume, or count.
2. Enter the price and size for up to four products.
3. Tap Compare to see each item's true price per 100 g, 100 mL, or unit, with the best value marked and the percent you save.

Tap Save & Share on any result to keep it in your history or send it on. No accounts, no ads, no tracking — just two clear tools that always give a straight answer.