For camping, fishing, footy days and long weekends
Buy the right ice once.
Know how long it’ll last.
Too little and the snags are swimming by day two. Too much and you've paid for ice that won't fit. Tell Slushometer the esky, the forecast and what's going in, and it works out the kilos to buy, how to pack them and how long they'll hold. At camp, tap when you crack a tin or add a bag and the countdown keeps itself honest, with no reception. After dark it goes amber, so your eyes stay used to the fire. Everything stays on your phone: no account, no cloud.
A$14.99 once. No subscription. Works offline.
- How much ice: the kilos to buy, rounded to the bags and blocks the servo sells.
- How long it'll last, from your esky, the forecast, and sun or shade.
- How to pack it: blocks on the floor, food up out of the water, cubes in the gaps.
- An ice countdown for every esky on the trip.
- Crack a tin: one tap, and the countdown allows for the lid being open.
- Can we raid the meat esky for the drinks? It does the sums.
- A camp food log with the 2-hour / 4-hour rule.
- The nearest servos and shops, from a list kept on your phone.
- Works with no reception. Every byte stays on your phone.
What it does
The guesswork at the servo, the soggy snags on day two, and the argument about whose esky gets the last block.
-
The ice calculator
Rotomoulded, fibreglass, a standard hard esky or a soft bag, and how many litres. How long you're away, the day's high and the night's low, and whether it sits in shade, full sun or on a hot ute tray. It works out the kilos with a safety margin, rounded to what you can buy.
-
Pack it right
A cutaway of your esky, layer by layer: blocks on the floor, tins standing up with cubes poured between, food in a basket up out of the water, a towel on top. Plus what pre-chilling the tins and the esky saves you, in kilos.
-
A countdown that keeps itself honest
Every esky gets an ice countdown and a 24-hour outlook. Tap when you open the lid, crack a tin or add a bag. Have a look now and then and tap "about half left": it learns how fast that esky really melts and corrects the rest.
-
Two eskys, one plan
The drinks esky gets opened every ten minutes; the meat esky shouldn't be. Can the meat esky spare a block for the drinks tonight? It works out whether it still holds until breakfast, then moves the ice in one tap.
-
Food that's safe to eat
Log the meat, seafood and dairy you've packed. It shows what to cook first, adds up the time anything has spent above 5°C under the 2-hour / 4-hour rule, and, while the app is open, sounds an alarm if the food esky is about to run out of ice.
-
Campfire mode
After sunset it switches to warm amber, with a big Crack a cold one button for cold, greasy hands. A dimmer and a red-lens filter keep it gentle on your eyes, and it can keep the screen awake as a campfire display.
-
Ice SOS
Running low? It counts down to the last of the ice and finds the nearest servos and shops from a list kept on your phone, so it works out bush. Save the roadhouse that always has ice, and message the mates that you're doing an ice run.
-
Rig presets
Tradie smoko, a weekend camp with two eskys, a four-day 4WD trip, a beach day, the boat. Start from one, tweak it, and save your own setups for next time.
A look inside
Real screens from Slushometer, during a made-up weekend.
How it works
Plan
Your esky, the trip length, the forecast and what's going in. Or start from a preset.
Buy and pack
Grab the bags and blocks it says, and pack them the way the cutaway shows.
Tap as you go
Crack a tin, add a bag, check the ice. The countdown follows along.
Top up in time
It tells you when to grab more, or whether one esky can spare some for another.
Pricing
One price, paid once. No subscription, and it covers your household on up to three devices.
Slushometer
A$14.99 once
The whole price, paid once and never again — no GST on top, no renewals, nothing to cancel. Every update is included. Pay by card through Stripe; your licence key comes in the receipt email.
No free trial
See it first right here
The screens on this page are the real app, so you can see exactly what you're getting before you buy.
Where your data lives
- Your eskys, trips and food log are stored in your browser on your phone
- There is no account, no database and no sign-in
- Ice SOS downloads a list of servos and shops for your state from idleideas.com.au, then finds the nearest on your phone. Your location never leaves it
- Sunset times for campfire mode are worked out on the phone too
- A backup is one file, saved wherever you choose
- Unlocking sends only the key, to check it
What it isn't
- A thermometer. Its temperatures are estimates from your esky, the forecast and what you tap. Check food with a real thermometer and keep it at 5°C or colder.
- A guarantee. If you're unsure about meat or seafood, throw it out.
- A shop. It doesn't sell ice or take a cut from servos.
Put it on your phone
Slushometer is a web app that installs like a normal app. No app store needed, and it works at camp with no signal.
iPhone or iPad
- Open Slushometer in Safari.
- Tap the Share button.
- Choose Add to Home Screen, then Add.
Android
- Open Slushometer in Chrome.
- Tap the three-dot menu.
- Choose Add to Home screen or Install app.
Laptop or desktop
- Open Slushometer in Chrome or Edge.
- Click the install icon at the right of the address bar.
- It opens in its own window from then on.
Questions
How accurate is it?
It's a heat model: what gets through your esky's walls, what the sun and a hot ute tray add, what every lid opening and warm tin costs, and the day's high and the night's low. It lands close to what eskys actually do: a few days for a good rotomoulded one, a day or two for a standard hard esky, less than a day for a soft bag. Tap "Check the ice" now and then and it corrects itself for your esky.
Do I need a Bluetooth probe or thermometer?
No. Everything is worked out from what you tell it and what you tap. If you've got a fridge thermometer, log a reading and it shows that instead of the estimate for the next two hours.
Does it work with no signal?
Yes. Once it's on your home screen it runs fully offline. The servo list for your state downloads once with reception and stays on your phone; download another state before you head interstate.
Which eskys does it know?
Rotomoulded, fibreglass ice boxes, standard hard eskys, polystyrene boxes, premium soft coolers and soft bags, from 10 to 200 litres. Track as many as you take on the trip.
Can it tell me if food is safe to eat?
It can tell you when it expects the esky to pass 5°C, and adds up time above 5°C under the NSW Food Authority's 2-hour / 4-hour rule. It can't see inside your esky, so check with a thermometer, and if you're unsure about meat or seafood, throw it out.
What about a 12-volt fridge?
Slushometer is for ice. A fridge that's running doesn't need it, though plenty of people still take an esky for the drinks.
Is there a free trial?
No. It's A$14.99 once, and the screens on this page are the real app. One purchase covers up to three devices in your household.
Slushometer is looking for testers.
It's built, and being tried on real trips before it opens. If you camp, fish or head away with an esky and want to try it on your next trip, email slushometer@idleideas.com.au and say what esky you've got.