Calculate household electricity usage and costs for various appliances. Track consumption by hour, day, month, or year to identify high-usage devices and save on electricity bills.






250+ iOS apps curated and reviewed
The best voltarocks apps on iPhone average 4.7★ across 250+ titles — we've ranked them by what real users actually keep on their phones. Updated November 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | — | No | No | May 2026 | ||
| 2 | Free | 3.5★ (4) | Yes | No | May 2026 | ||
| 3 | Free | — | No | No | Aug 2026 | ||
| 4 | Free | 4.8★ (186K) | No | No | Nov 2026 | ||
| 5 | Free | — | Yes | No | Sep 2026 | ||
| 6 | Free | 4.7★ (83) | No | No | Nov 2026 | ||
| 7 | Free | 5.0★ (3) | Yes | Yes | Nov 2026 | ||
| 8 | Free | 4.3★ (67) | Yes | No | Nov 2026 |












Calculate household electricity usage and costs for various appliances. Track consumption by hour, day, month, or year to identify high-usage devices and save on electricity bills.




Calculate your monthly electricity bill by inputting appliance wattage, quantity, and usage time. Set your per-unit electricity price and GST to get an accurate estimate.