# Solar DMU vs Lithium Valley

The clearest difference is update cadence: Lithium Valley at every 6 days against Solar DMU's monthly. Lithium Valley also leads on iOS requirement (12.0 vs 15.0). 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 DMU ships an update monthly, Lithium Valley every 6 days. The most recent releases landed on October 28, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Solar DMU | Lithium Valley |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 6 days** |
| Size | 117 MB | 42 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [深圳市英威腾电气股份有限公司](https://appshunter.io/developer/1012943436) | [远飞 周](https://appshunter.io/developer/1618577296) |

## What reviewers say

### Solar DMU

[App page](https://appshunter.io/ios/app/solar-dmu/id6743460104)

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

**In-app purchases:** none


### Lithium Valley

[App page](https://appshunter.io/ios/app/lithium-valley/id6744994329)

**In-app purchases:** none


## Frequently asked questions

### Is Solar DMU free?

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

### Is Lithium Valley free?

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

### Do Solar DMU or Lithium Valley have ads?

Neither Solar DMU nor Lithium Valley shows ads.

### Which is updated more often, Solar DMU or Lithium Valley?

Solar DMU ships an update monthly, and Lithium Valley every 6 days. Most recently, Solar DMU was updated on October 28, 2026 and Lithium Valley on September 22, 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.*