# Solar PV System Designer vs Sizer App

The clearest difference is iOS requirement: Sizer App at 13.0 against Solar PV System Designer's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Solar PV System Designer ships an update weekly, Sizer App every 8 days. The most recent releases landed on October 1, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Solar PV System Designer | Sizer App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sizer-app/id6760812150/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 8 days |
| Monetization | — | Ad-supported |
| Size | 222 MB | 57 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cepoi Mario](https://appshunter.io/developer/1575099437) | [Abisayo Folu-Agoi](https://appshunter.io/developer/1886360042) |

## What reviewers say

### Solar PV System Designer

[App page](https://appshunter.io/ios/app/solar-pv-system-designer/id6755193110)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Sizer App

[App page](https://appshunter.io/ios/app/sizer-app/id6760812150)

This app simplifies solar system design for professionals and enthusiasts. It accurately estimates energy needs and generates complete system specifications, including panel capacity, battery sizing, and safety features. Manage multiple projects and access your data securely across devices.

**Highlights:** Load calculator for energy consumption, Complete system design specifications, Protection and safety tools, Project management for multiple configurations, Secure multi-device access, Premium subscription for unlimited calculations

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Solar PV System Designer free?

Solar PV System Designer is free to download, with no in-app purchases.

### Is Sizer App free?

Sizer App is free to download, with no in-app purchases.

### Do Solar PV System Designer or Sizer App have ads?

Neither Solar PV System Designer nor Sizer App shows ads.

### Which is updated more often, Solar PV System Designer or Sizer App?

Solar PV System Designer ships an update weekly, and Sizer App every 8 days. Most recently, Solar PV System Designer was updated on October 1, 2026 and Sizer App on October 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*