Setrum: Prepaid Power Tracker

Alastic Corp

About this app

Power credit running out at night? Setrum tells you how much prepaid electricity credit you have left at any moment, and warns you before the meter alarm starts beeping.

Just note the kWh shown on your meter now and then. Setrum works out your daily use, estimates your current credit, and predicts the day it runs out.

KEY FEATURES
• Live estimate of credit left, days left and run-out date
• Clear status: Healthy, Running low, Top up soon
• Log top-ups: amount, kWh from the receipt and the 20-digit token number (copy it any time)
• Daily usage chart for 14/30 days and week-over-week comparison
• Average kWh per day, cost per day and estimated monthly cost
• Monthly token spending
• Token calculator: how many kWh a given amount buys, with lighting tax, VAT and admin fee breakdown
• "How many days do I need?" with a suggested purchase amount
• Appliance calculator: monthly cost of AC, fridge, rice cooker, water pump and more, sorted by usage
• Meter codes to check kWh left on several meter brands
• Power saving tips
• Multiple meters: home, rental room, shop
• Current Indonesian household tariffs built in (editable), regional lighting tax and admin fee
• Daily reading reminder and low-credit warning
• Full history with edit, delete and Undo
• CSV export and JSON backup/restore to move phones
• Monthly report: usage calendar, highest/lowest days, weekday vs weekend pattern, 6-month trend and month-end projection
• Monthly power budget with a warning when you are projected to go over
• Real price from your receipts, one tap to update your settings
• Split the bill: equally or by days stayed, mark who has paid, share with the group
• Savings simulator: cut hours per appliance and see the money saved
• Share your credit status with family or housemates on WhatsApp
• Paste the SMS/receipt and the 20-digit token is picked out for you
• Home-screen widget: kWh and days left with a quick Record button
• Send feedback right from the app
• Dark mode, Indonesian & English

PRIVACY FIRST
Setrum works offline. No account, no ads, no trackers. Your records stay on your phone — nothing is sent except feedback you choose to send.

Note: Setrum is an independent app and is not affiliated with any electricity company. It does not buy tokens or read your meter automatically. Built-in tariffs are estimates you can adjust to match your receipt.

Questions or ideas? Send them from More › Send feedback.

What’s new

First release of Setrum: track prepaid power credit, see when it runs out, token & appliance calculators, monthly report, widget and reminders. Offline, no account, no ads.