# Off Grid Pro: Solar PV Design — Off-grid solar wiring guide

> Off-grid solar wiring guide (iPhone/iPad app by Cepoi Mario.)

- Source: https://appshunter.io/ios/app/off-grid-pro-solar-pv-design/id6755193110 (this page in markdown: same URL + `.md`)
- Developer: [Cepoi Mario](https://appshunter.io/developer/1575099437)
- Category: Productivity, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 47 MB
- Languages: American English
- Released: 2025-11-13
- Data updated: 2026-11-14

## What is Off Grid Pro?

Off Grid Pro (formerly Solar PV System Designer, rebuilt from scratch) takes you from "what does my home use?" to a finished wiring diagram and a list of parts to get. It is a guided setup: one step at a time, in plain words, for someone who has never designed a solar system, and quick enough for someone who has.

HOW IT WORKS

1. Your home. Pick your appliances room by room, as pictures. The app adds up what your home needs.
2. Battery. Get a recommended battery bank, or enter the batteries you already have. All-in-one cabinets and portable power stations are covered too.
3. Solar. See how many panels you need for your region, how they are grouped into strings, and which charge controller suits them.
4. Inverter. Get the inverter size that carries your home, or choose your own.
5. System. Your whole system in one 3D diagram: batteries, charge controller, busbars, fuses, battery switch and inverter, every cable with its size, and the current shown flowing through the wires. With it comes a shopping list of every part.
6. Build. A step-by-step build guide for your own system, animated in 3D: how a lug, washer and nut go on a battery post, how the batteries are joined, where each fuse goes, the order to connect things in, and what to keep away from at each step.

WHAT YOU GET

• A 3D wiring diagram of your own system that you can turn, zoom and follow lead by lead
• Cable sizes and fuse ratings worked out for every circuit
• A battery monitor shunt and a battery isolator switch where the system needs them
• Solar strings matched to the charge controller's voltage and current limits
• A parts list for the whole system
• An animated build guide with safety notes at every step
• Several projects, with undo and redo

THE BUILD GUIDE

The first chapter of the build guide (what you need, and wiring the batteries) is free. The full guide for the rest of the system is a one-time in-app purchase: bought once, yours for good, and it also removes the ads. There is no subscription.

A NOTE ON SAFETY

This app is a planning tool. Batteries and solar panels can deliver dangerous currents and voltages. Have your design checked, and the mains side connected, by a qualified electrician, and follow the manuals of the equipment you buy and the electrical rules where you live.

Questions or ideas: https://offgridpro.app

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Full build guide | $1.99 | one-time |


## Is Off Grid Pro safe?

Not enough ratings yet to assess Off Grid Pro.

## Is Off Grid Pro legit?

Off Grid Pro: Solar PV Design appears to be a legitimate app. The AppsHunter Legitimacy Score for Off Grid Pro is 83 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 3 releases)

### 2.0 — 2026-11-13

Rebuilt from scratch.
• A guided setup, from what your home uses to a finished system
• A 3D wiring plan of every battery, cable, fuse and busbar
• A step-by-step animated build guide for your own system

### 1.1 — 2025-11-19

Added Solar Panel Calculation

### 1.0 — 2025-11-13

No release notes.

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## More apps by Cepoi Mario

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All apps by Cepoi Mario: https://appshunter.io/developer/1575099437

## Related topics

[solar pv system designer](https://appshunter.io/ios/topics/solar-pv-system-designer) · [system designer](https://appshunter.io/ios/topics/system-designer)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-14.*