# 神居秒算 vs 充電博士

The clearest difference is update cadence: 充電博士 at every 3 days against 神居秒算's monthly. 神居秒算's advantage is iOS requirement (13.0 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.

神居秒算 ships an update monthly, 充電博士 every 3 days. Both last shipped on October 4, 2026.

## The numbers

| Metric | 神居秒算 | 充電博士 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (73 ratings)](https://appshunter.io/ios/app/id1209934782/reviews)** | — |
| Number of ratings | **73** | — |
| Positive reviews | 55.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Size | 111 MB | 77 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [GA technologies (Shanghai) Co., Ltd.](https://appshunter.io/developer/1566854157) | [TTech Global Service Limited](https://appshunter.io/developer/1602455949) |

## What reviewers say

### 神居秒算

[App page](https://appshunter.io/ios/app/id1209934782)

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

**In-app purchases:** none


### 充電博士

[App page](https://appshunter.io/ios/app/id6446137813)

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

**In-app purchases:** none


## Frequently asked questions

### Is 神居秒算 free?

神居秒算 is free to download, with no in-app purchases.

### Is 充電博士 free?

充電博士 is free to download, with no in-app purchases.

### Do 神居秒算 or 充電博士 have ads?

Neither 神居秒算 nor 充電博士 shows ads.

### Which is updated more often, 神居秒算 or 充電博士?

神居秒算 ships an update monthly, and 充電博士 every 3 days. Most recently, 神居秒算 was updated on October 4, 2026 and 充電博士 on October 4, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*