# PH vs Legacy Industry

The clearest difference is update cadence: PH at fortnightly against Legacy Industry's every 12 months. Legacy Industry's advantage is iOS requirement (12.0 vs 15.6). 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.

PH ships an update fortnightly, Legacy Industry every 12 months. Both last shipped on October 25, 2026.

## The numbers

| Metric | PH | Legacy Industry |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 12 months |
| Size | 46 MB | 40 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Suzhou zhongchupuhua Electric Technology Co., Ltd](https://appshunter.io/developer/1673675965) | [Anhui Udan Technology Co., Ltd.](https://appshunter.io/developer/1593792520) |

## What reviewers say

### PH

[App page](https://appshunter.io/ios/app/ph-solar/id6445969426)

**Features:** macOS Compatibility

**In-app purchases:** none


### Legacy Industry

[App page](https://appshunter.io/ios/app/legacy-industry/id6471319635)

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

**In-app purchases:** none


## Frequently asked questions

### Is PH free?

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

### Is Legacy Industry free?

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

### Do PH or Legacy Industry have ads?

Neither PH nor Legacy Industry shows ads.

### Which is updated more often, PH or Legacy Industry?

PH ships an update fortnightly, and Legacy Industry every 12 months. Most recently, PH was updated on October 25, 2026 and Legacy Industry on October 25, 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.*