# Sunbase vs OpenSolar

The clearest difference is review sentiment: Sunbase at 86% against OpenSolar's 45%. Sunbase also leads on iOS requirement (13.0 vs 15.7). OpenSolar's advantage is rating (4.4 vs 4.1). On price, ratings volume, update cadence and ads there is nothing between them.

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

OpenSolar holds the better App Store score, 4.4 against 4.1. Both are backed by a comparable volume of ratings — 22 and 10 respectively. Written reviews complicate that: 86% of Sunbase's written reviews are positive against 45% of OpenSolar's, so the app with the better star average is not the one people write more warmly about.

Sunbase ships an update monthly, OpenSolar every 6 weeks. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Sunbase | OpenSolar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (22 ratings)](https://appshunter.io/ios/app/sunbase/id1336351915/reviews) | **[4.4 (10 ratings)](https://appshunter.io/ios/app/opensolar/id1410085935/reviews)** |
| Number of ratings | **22** | 10 |
| Positive reviews | **85.7% of reviews** | 45.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | Free | Free |
| Size | 56 MB | 216 MB |
| Requires iOS | **13.0** | 15.7 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jared Dubin](https://appshunter.io/developer/1336351914) | [OpenSolar Pty Ltd](https://appshunter.io/developer/1340033321) |

## What reviewers say

### Sunbase

[App page](https://appshunter.io/ios/app/sunbase/id1336351915)

Manage all aspects of your business, from customer interactions and sales to operations and financing. Track employee locations, manage leads and appointments, and generate invoices and work orders. This app offers comprehensive tools for businesses of all sizes.

**Highlights:** Customer and sales tracking, Employee GPS tracking, Lead and appointment management, Invoice and work order creation, Financing and permit tracking, Inventory management, Email marketing tools

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Sunbase free?

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

### Is OpenSolar free?

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

### Which has better reviews, Sunbase or OpenSolar?

OpenSolar is rated higher. Sunbase averages 4.1 out of 5 from 22 ratings, while OpenSolar averages 4.4 from 10 ratings.

### Do Sunbase or OpenSolar have ads?

Neither Sunbase nor OpenSolar shows ads.

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

Sunbase ships an update monthly, and OpenSolar every 6 weeks. Most recently, Sunbase was updated on October 16, 2026 and OpenSolar on October 7, 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.*