# OpenSolar vs SubHub App

The clearest difference is update cadence: SubHub App at every 5 days against OpenSolar's every 6 weeks. On price, ads, in-app purchases and device support there is nothing between them.

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

OpenSolar ships an update every 6 weeks, SubHub App every 5 days. The most recent releases landed on October 7, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | OpenSolar | SubHub App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (10 ratings)](https://appshunter.io/ios/app/opensolar/id1410085935/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 45.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 5 days** |
| Monetization | Free | — |
| Size | 216 MB | 74 MB |
| Requires iOS | 15.7 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [OpenSolar Pty Ltd](https://appshunter.io/developer/1340033321) | [Subcontractorhub Inc.](https://appshunter.io/developer/6785998756) |

## What reviewers say

### OpenSolar

[App page](https://appshunter.io/ios/app/opensolar/id1410085935)

This free application provides a comprehensive solution for designing and selling solar energy systems. It offers end-to-end functionality for solar professionals.

**Highlights:** End-to-end solar design, Sales application, Free to use, Comprehensive functionality

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

**In-app purchases:** none


### SubHub App

[App page](https://appshunter.io/ios/app/subhub-app/id6785998754)

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

**In-app purchases:** none


## Frequently asked questions

### Is OpenSolar free?

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

### Is SubHub App free?

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

### Do OpenSolar or SubHub App have ads?

Neither OpenSolar nor SubHub App shows ads.

### Which is updated more often, OpenSolar or SubHub App?

OpenSolar ships an update every 6 weeks, and SubHub App every 5 days. Most recently, OpenSolar was updated on October 7, 2026 and SubHub App on October 3, 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.*