# Sunsynk Connect vs Voltbox

The clearest difference is in-app purchases: Sunsynk Connect at none against Voltbox's 1. Sunsynk Connect also leads on iOS requirement (13.0 vs 15.0). Voltbox's advantage is update cadence (every 2 weeks vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. Voltbox sells 1 one-off in-app purchase. Sunsynk Connect asks for nothing beyond the download.

Sunsynk Connect ships an update monthly, Voltbox every 2 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Sunsynk Connect | Voltbox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.1 (17 ratings)](https://appshunter.io/ios/app/sunsynk-connect/id1583953649/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 19.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 52 MB | 21 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sunsynk](https://appshunter.io/developer/1583953651) | [GABRIELE CHESI](https://appshunter.io/developer/6793043905) |

## What reviewers say

### Sunsynk Connect

[App page](https://appshunter.io/ios/app/sunsynk-connect/id1583953649)

Monitor and control your solar inverter system remotely from anywhere. View real-time energy generation, battery status, and grid/load statistics. Adjust inverter settings, share system access with installers, and receive event alerts.

**Highlights:** Real-time system monitoring, Remote inverter settings control, Plant connection sharing, Octopus Agile integration (UK), Detailed reporting and export, Event and alert notifications

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

**In-app purchases:** none


### Voltbox

[App page](https://appshunter.io/ios/app/voltbox-electrician-toolkit/id6793043903)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Unlock | $8.99 | one-time |


## Frequently asked questions

### Is Sunsynk Connect free?

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

### Is Voltbox free?

Voltbox is free to download, with in-app purchases available.

### Do Sunsynk Connect or Voltbox have ads?

Neither Sunsynk Connect nor Voltbox shows ads.

### Which is updated more often, Sunsynk Connect or Voltbox?

Sunsynk Connect ships an update monthly, and Voltbox every 2 weeks. Most recently, Sunsynk Connect was updated on November 3, 2026 and Voltbox on October 31, 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.*