# ISWP vs Solar Guardian

The clearest difference is update cadence: Solar Guardian at every 2 months against ISWP's every 7 months. Solar Guardian also leads on iOS requirement (13.0 vs 15.6). 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.

ISWP ships an update every 7 months, Solar Guardian every 2 months. The most recent releases landed on October 2, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | ISWP | Solar Guardian |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.4 (16 ratings)](https://appshunter.io/ios/app/solar-guardian/id6443552259/reviews)** |
| Number of ratings | — | **16** |
| Positive reviews | — | 16.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 41 MB | 84 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [InnologixConsulting](https://appshunter.io/developer/1286604784) | [BEIJING EPSOLAR TECHNOLOGY CO., LTD.](https://appshunter.io/developer/1330876646) |

## What reviewers say

### ISWP

[App page](https://appshunter.io/ios/app/iswp/id1478705186)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is ISWP free?

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

### Is Solar Guardian free?

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

### Do ISWP or Solar Guardian have ads?

Neither ISWP nor Solar Guardian shows ads.

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

ISWP ships an update every 7 months, and Solar Guardian every 2 months. Most recently, ISWP was updated on October 2, 2026 and Solar Guardian on October 16, 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.*