# 真好算 vs SZ Calc

真好算 and SZ Calc are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. 真好算 sells 1 one-off in-app purchase and SZ Calc sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

真好算 ships an update monthly, SZ Calc every 5 weeks. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 真好算 | SZ Calc |
| --- | --- | --- |
| 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 | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Monetization | Free | — |
| Size | 4 MB | 11 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [滚宁 林](https://appshunter.io/developer/1688525702) | [玉君 陈](https://appshunter.io/developer/1830854776) |

## 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 |


### SZ Calc

[App page](https://appshunter.io/ios/app/sz-calc/id6757951650)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support the Developer | $0.99 | one-time |
| Support the Developer | $2.99 | one-time |
| Support the Developer | $4.99 | one-time |
| Support the Developer | $9.99 | one-time |


## Frequently asked questions

### Is 真好算 free?

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

### Is SZ Calc free?

SZ Calc is free to download, with in-app purchases available.

### Do 真好算 or SZ Calc have ads?

Neither 真好算 nor SZ Calc shows ads.

### Which is updated more often, 真好算 or SZ Calc?

真好算 ships an update monthly, and SZ Calc every 5 weeks. Most recently, 真好算 was updated on October 30, 2026 and SZ Calc 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.*