# PH vs WANJIN ESS

The clearest difference is update cadence: PH at fortnightly against WANJIN ESS's every 6 months. WANJIN ESS'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, WANJIN ESS every 6 months. The most recent releases landed on September 9, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | PH | WANJIN ESS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 6 months |
| Size | 46 MB | 24 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


### WANJIN ESS

[App page](https://appshunter.io/ios/app/wanjin-ess/id6478657145)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PH free?

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

### Is WANJIN ESS free?

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

### Do PH or WANJIN ESS have ads?

Neither PH nor WANJIN ESS shows ads.

### Which is updated more often, PH or WANJIN ESS?

PH ships an update fortnightly, and WANJIN ESS every 6 months. Most recently, PH was updated on September 9, 2026 and WANJIN ESS on September 18, 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.*