Effortlessly plan your off-grid solar system. This tool calculates panel, battery, and inverter needs based on your location, power usage, and desired backup days, providing cost and payback estimates.
Solar System Calculator by Oguzhan Sepetci






250+ iOS apps curated and reviewed
From beginner-friendly picks to power-user tools, our solar calculator offgrid list covers 250+ iPhone apps updated through October 2026. Compare ratings, prices, and screenshots in one place.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | — | Yes | No | May 2026 | ||
| 2 | Free | — | No | No | Oct 2026 | ||
| 3 | Free | 4.0★ (1) | No | Yes | Oct 2026 | ||
| 4 | Free | 4.6★ (45) | Yes | Yes | Oct 2026 | ||
| 5 | Free | 5.0★ (1) | No | Yes | Oct 2026 | ||
| 6 | $1.99 | 4.0★ (13) | No | No | Aug 2026 | ||
| 7 | Free | — | No | Yes | Oct 2026 | ||
| 8 | Free | — | No | Yes | Oct 2026 |

















Effortlessly plan your off-grid solar system. This tool calculates panel, battery, and inverter needs based on your location, power usage, and desired backup days, providing cost and payback estimates.