# Lunar Solar Optimise vs Hi

The clearest difference is device support: Lunar Solar Optimise at 3 against Hi's —. Lunar Solar Optimise also leads on iOS requirement (13.0 vs 15.6). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Lunar Solar Optimise | Hi |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 6 weeks | — |
| Size | 32 MB | 111 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [SolrBoost Pty Ltd](https://appshunter.io/developer/1667247561) | [SOS-ICT (PTY) LTD](https://appshunter.io/developer/1520000687) |

## What reviewers say

### Lunar Solar Optimise

[App page](https://appshunter.io/ios/app/lunar-solar-optimise/id1673744993)

**Features:** macOS Compatibility

**In-app purchases:** none


### Hi

[App page](https://appshunter.io/ios/app/hi-tec-security/id6511246494)

**In-app purchases:** none


## Frequently asked questions

### Is Lunar Solar Optimise free?

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

### Is Hi free?

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

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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.*