# OpenSolar vs Sunbase Pro

The clearest difference is review sentiment: OpenSolar at 45% against Sunbase Pro's 0%. Sunbase Pro's advantage is update cadence (fortnightly vs every 6 weeks). On price, ads, in-app purchases and monetization model 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, Sunbase Pro fortnightly. The most recent releases landed on October 7, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | OpenSolar | Sunbase Pro |
| --- | --- | --- |
| 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** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Monetization | Free | Free |
| Size | 216 MB | 201 MB |
| Requires iOS | 15.7 | **15.6** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [OpenSolar Pty Ltd](https://appshunter.io/developer/1340033321) | [Jared Dubin](https://appshunter.io/developer/1336351914) |

## 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


### Sunbase Pro

[App page](https://appshunter.io/ios/app/sunbase-pro/id6751342825)

Manage all aspects of your business from customer interactions to operations and finances. Track employees, leads, appointments, invoices, and inventory. Streamline communication and reporting with integrated tools.

**Highlights:** Customer and lead management, GPS employee tracking, Appointment scheduling, Invoice and work order creation, Inventory management, Financial reporting, Email marketing tools

**In-app purchases:** none


## Frequently asked questions

### Is OpenSolar free?

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

### Is Sunbase Pro free?

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

### Do OpenSolar or Sunbase Pro have ads?

Neither OpenSolar nor Sunbase Pro shows ads.

### Which is updated more often, OpenSolar or Sunbase Pro?

OpenSolar ships an update every 6 weeks, and Sunbase Pro fortnightly. Most recently, OpenSolar was updated on October 7, 2026 and Sunbase Pro on September 19, 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.*