# PROJOY M vs LIB Solar

The clearest difference is update cadence: LIB Solar at every 3 weeks against PROJOY M's every 4 months. 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.

PROJOY M ships an update every 4 months, LIB Solar every 3 weeks. The most recent releases landed on October 5, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | PROJOY M | LIB Solar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Size | 40 MB | 89 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Projoy Electric Co., Ltd.](https://appshunter.io/developer/1718026915) | [EnergyLIB (Suzhou) New Energy Technology Co., Ltd](https://appshunter.io/developer/1801914154) |

## What reviewers say

### PROJOY M

[App page](https://appshunter.io/ios/app/projoy-m-cloud-v2/id6472881964)

**Features:** macOS Compatibility

**In-app purchases:** none


### LIB Solar

[App page](https://appshunter.io/ios/app/lib-solar/id6740565634)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PROJOY M free?

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

### Is LIB Solar free?

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

### Do PROJOY M or LIB Solar have ads?

Neither PROJOY M nor LIB Solar shows ads.

### Which is updated more often, PROJOY M or LIB Solar?

PROJOY M ships an update every 4 months, and LIB Solar every 3 weeks. Most recently, PROJOY M was updated on October 5, 2026 and LIB Solar on September 9, 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.*