# Hexing Solar vs WattTools

The clearest difference is in-app purchases: Hexing Solar at none against WattTools's 2. Hexing Solar also leads on iOS requirement (12.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. WattTools sells 2 in-app purchases, starting at $0.99 per 7 days. Hexing Solar asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 9, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Hexing Solar | WattTools |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 17 MB | 101 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hexing Zeko Information Technology Co., Ltd](https://appshunter.io/developer/1531683944) | [源 张](https://appshunter.io/developer/1649775012) |

## What reviewers say

### Hexing Solar

[App page](https://appshunter.io/ios/app/hexing-solar/id6446071975)

**Features:** macOS Compatibility

**In-app purchases:** none


### WattTools

[App page](https://appshunter.io/ios/app/watttools/id6476344694)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly subscription | $0.99 | per 7 days |
| 3Credits | $0.99 | one-time |


## Frequently asked questions

### Is Hexing Solar free?

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

### Is WattTools free?

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

### Do Hexing Solar or WattTools have ads?

Neither Hexing Solar nor WattTools shows ads.

### Which is updated more often, Hexing Solar or WattTools?

Hexing Solar ships an update every 3 weeks, and WattTools every 3 weeks. Most recently, Hexing Solar was updated on September 9, 2026 and WattTools on September 15, 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.*