# 真好算 vs 知瞬

The clearest difference is in-app purchases: 知瞬 at none against 真好算's 1. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 真好算 sells 1 one-off in-app purchase. 知瞬 asks for nothing beyond the download.

## The numbers

| Metric | 真好算 | 知瞬 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/id6449284621/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 69.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | — |
| Monetization | Free | — |
| Size | 4 MB | 66 MB |
| Requires iOS | 17.0 | **16.2** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [滚宁 林](https://appshunter.io/developer/1688525702) | [Hefei Today Yi Xiu Technology Co., Ltd](https://appshunter.io/developer/6782234075) |

## What reviewers say

### 真好算

[App page](https://appshunter.io/ios/app/id6449284621)

A user-friendly calculator app designed for everyday use, featuring a clean interface and one-handed operation. It offers quick access to history, unit conversions, currency exchange, and more, all without ads.

**Highlights:** One-handed operation, Recent calculation history display, Unit conversion tools, Currency exchange rates, Amount to Chinese characters, BMI calculator, Ad-free experience

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 真好算 PRO | $5.99 | one-time |


### 知瞬

[App page](https://appshunter.io/ios/app/id6806938105)

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

**In-app purchases:** none


## Frequently asked questions

### Is 真好算 free?

真好算 is free to download, with in-app purchases available.

### Is 知瞬 free?

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

### Do 真好算 or 知瞬 have ads?

Neither 真好算 nor 知瞬 shows ads.

---

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