# WattGuru vs Solar Panel Layout

The clearest difference is iOS requirement: Solar Panel Layout at 15.0 against WattGuru's 17.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. WattGuru sells 1 one-off in-app purchase and Solar Panel Layout sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

WattGuru ships an update fortnightly, Solar Panel Layout weekly. The most recent releases landed on October 25, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | WattGuru | Solar Panel Layout |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Size | 9 MB | 27 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Michael Caklec](https://appshunter.io/developer/974662614) | [Frederic Billon](https://appshunter.io/developer/1811407676) |

## What reviewers say

### WattGuru

[App page](https://appshunter.io/ios/app/wattguru/id6741865891)

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WattGuru Full Version | $3.99 | one-time |


### Solar Panel Layout

[App page](https://appshunter.io/ios/app/solar-panel-layout/id6785808578)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $2.99 | per month |
| Pro | $17.99 | per year |


## Frequently asked questions

### Is WattGuru free?

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

### Is Solar Panel Layout free?

Solar Panel Layout is free to download, with in-app purchases available.

### Do WattGuru or Solar Panel Layout have ads?

Neither WattGuru nor Solar Panel Layout shows ads.

### Which is updated more often, WattGuru or Solar Panel Layout?

WattGuru ships an update fortnightly, and Solar Panel Layout weekly. Most recently, WattGuru was updated on October 25, 2026 and Solar Panel Layout on October 10, 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.*