Animal Crossing Calculator

Animal Crossing Calculator is a Animal Crossing-themed calculator application released for the Nintendo DSi as DSiWare in 2009. Prior to the closure of the Nintendo DSi Shop on March 31, 2017, the application could be purchased for 200 Nintendo Points. It can also be purchased on the Nintendo 3DS eShop for $1.99.

Modes

 * Normal: A basic calculator
 * Unit Converter: Converts the measurements of length, area, weight, speed, volume, temperature, time, and age.
 * Age Calculations: It can calculate the age of a human, hamster, cat, parakeet, small dog, rabbit, large dog, and a horse.

DSi Shop description
"Need to figure out what you owe Tom Nook or the amount in your savings account? Animal Crossing Calculator features the full functionally of a traditional calculator, including a Memory key and the ability to display up to 13 digits, and adds a layer of atmosphere unique to Animal Crossing. Use the Unit Converter to turn one unit of measure into another (such as length, weight, volume, age, and others), or track the history of calculations you've performed with ease. Listen to Animalese pronunciation of numbers when you process them and watch for a favorite Animal Crossing character to appear when your results meet certain criteria. Look no further for a fun, but practical, way to experience the charm of Animal Crossing!"

Easter eggs

 * Nook and flowers: If the player's sum contains only sequential digits (e.x. 12,345), when the player presses equal (=), Tom Nook and some flowers will appear from the bottom of the screen.
 * Nook and balloons: If the player's sum contains all of the same digit (e.x. 77,777), Nook will appear and some balloons will float up until they fly out of view.

References to the Animal Crossing series

 * The voice that speaks when a number is typed in is also heard when the player types something on the keyboard.
 * The "ta-dah" sound that plays during the Nook and balloons Easter egg is the same sound that plays when the player "shows off" a bug or fish.
 * The sound that plays during the Nook and flowers Easter egg is the same sound as when the player drinks coffee.
 * The sounds that play when the player hits the on-screen buttons are the option menu sounds from the games.