Change Calculator vs NOCTA

Change Calculator tells you what to hand back, the moment you tap the cash you were given. Made for the market stall, the yard sale, the bake sale and the school fair: anywhere you take cash without a till. It also works the other way round, so you can check that the cashier got it right. HOW IT WORKS 1. Type the bill. 2. Tap the coins and notes the customer handed you. 3. Read the change. The app also shows which coins and notes to give back. WHAT'S IN THE DRAWER • Over 150 currencies, each with its real coins and notes. The app starts with the currency of your device; switch with one tap. • Hide the denominations you never see, so your drawer matches your stall. • Undo a wrong tap, reset for the next customer, haptic feedback on every tap. • Dark mode, and a layout made for iPad. • Works completely offline. PRIVACY No ads, no accounts, no analytics. Nothing is tracked and nothing leaves your device. CHANGE PRO A single optional purchase that supports development and removes the occasional upgrade prompt. Everything else is included for everyone.

5-DAY FREE TRIAL Install the app and use every feature for five days. After that, a single one-time purchase unlocks it for good — there is no subscription. SOS and the emergency panel stay free forever, trial or not. NOCTA does not just switch a light on. It gives you control over it. PRECISE BRIGHTNESS If your phone's LED supports levels, NOCTA genuinely dims it. The percentage on screen is the value going to the hardware, not a decorative slider. If your device cannot dim, the app says so plainly instead of pretending. When the phone warms up, NOCTA reads the operating system's own thermal state and lowers the output. Measured, not guessed. FIVE MODES Focus — A classic, strong flashlight. Turn the dial for brightness, set an auto-off timer, hold for momentary light, lock the screen against stray taps. Ambient — The screen becomes the lamp. Colour temperature from candlelight to daylight, free colour choice, candle flicker and a sleep fade. Inspect — An inspection camera. 10× zoom, contrast and edge enhancement, freeze the frame, add arrows, circles and notes. Made for pipe runs, engine bays, fuse boxes and the space under furniture. Signal — SOS, roadside warning, slow beacon, text to Morse code, a metronome and your own recorded rhythm. Choose light, screen, vibration and sound independently. Scene — Pick what you are doing instead of fiddling with settings: night walk, power cut, reading, a child's room, camping, vehicle breakdown, night vision, repair work. Save your own scenes too. EMERGENCY One screen with SOS, GPS coordinates, compass heading, battery level and a message large enough to read from a distance. All of it works without an internet connection. This feature never dials anyone automatically. NO ADS, NO PERMISSIONS The flashlight, screen light, scenes and SOS ask for nothing at all. The camera is requested only in Inspect, location only in the Emergency panel. Nothing is collected. One-time purchase. No subscription, no ads, no account.