# Polying 2 vs ChargeDB 充电数据库

The clearest difference is iOS requirement: Polying 2 at 16.6 against ChargeDB 充电数据库's 26.0. On price, update cadence, ads 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.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 3, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Polying 2 | ChargeDB 充电数据库 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 1 MB | 5 MB |
| Requires iOS | **16.6** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [深圳艾斯特创新科技有限公司](https://appshunter.io/developer/1405370693) | [正洋 陈](https://appshunter.io/developer/6778176800) |

## What reviewers say

### Polying 2

[App page](https://appshunter.io/ios/app/polying-2/id6762327888)

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

**In-app purchases:** none


### ChargeDB 充电数据库

[App page](https://appshunter.io/ios/app/chargedb/id6785040788)

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

**In-app purchases:** none


## Frequently asked questions

### Is Polying 2 free?

Polying 2 is free to download, with no in-app purchases.

### Is ChargeDB 充电数据库 free?

ChargeDB 充电数据库 is free to download, with no in-app purchases.

### Do Polying 2 or ChargeDB 充电数据库 have ads?

Neither Polying 2 nor ChargeDB 充电数据库 shows ads.

### Which is updated more often, Polying 2 or ChargeDB 充电数据库?

Polying 2 ships an update every 3 weeks, and ChargeDB 充电数据库 every 3 weeks. Most recently, Polying 2 was updated on October 3, 2026 and ChargeDB 充电数据库 on October 13, 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.*