# Solar Guardian vs Voltha

The clearest difference is update cadence: Voltha at every 3 weeks against Solar Guardian's every 2 months. 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.

Solar Guardian ships an update every 2 months, Voltha every 3 weeks. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Solar Guardian | Voltha |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (17 ratings)](https://appshunter.io/ios/app/solar-guardian/id6443552259/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 16.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 84 MB | 71 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [BEIJING EPSOLAR TECHNOLOGY CO., LTD.](https://appshunter.io/developer/1330876646) | [Aton Green Energy](https://appshunter.io/developer/1694319000) |

## What reviewers say

### Solar Guardian

[App page](https://appshunter.io/ios/app/solar-guardian/id6443552259)

Monitor and control various solar energy systems, including inverters, chargers, and storage solutions. Adjust parameters and view data for optimal energy management.

**Highlights:** Data display for solar systems, Parameter setting for inverters, Supports grid-tie inverters, Hybrid inverter management, Energy storage system monitoring, Home and mobile energy storage control

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

**In-app purchases:** none


### Voltha

[App page](https://appshunter.io/ios/app/voltha/id6450677261)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Solar Guardian free?

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

### Is Voltha free?

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

### Do Solar Guardian or Voltha have ads?

Neither Solar Guardian nor Voltha shows ads.

### Which is updated more often, Solar Guardian or Voltha?

Solar Guardian ships an update every 2 months, and Voltha every 3 weeks. Most recently, Solar Guardian was updated on October 24, 2026 and Voltha on October 27, 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.*