# 睿图 vs Duck Calculator

The clearest difference is price: 睿图 at Free against Duck Calculator's $0.99. 睿图 also leads on iOS requirement (14.0 vs 16.0). Duck Calculator's advantage is in-app purchases (none vs 6). On update cadence, ads and device support there is nothing between them.

睿图 is free to download; Duck Calculator costs $0.99 up front. 睿图 sells 6 one-off in-app purchases. Duck Calculator asks for nothing beyond the download.

睿图 ships an update every 5 months, Duck Calculator every 7 months. The most recent releases landed on October 13, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | 睿图 | Duck Calculator |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 7 months |
| Monetization | — | Paid |
| Size | 6 MB | 1 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [RootSportsInvestmentBeijingCo.,Ltd.](https://appshunter.io/developer/977148898) | [德铭 何](https://appshunter.io/developer/1690983330) |

## What reviewers say

### 睿图

[App page](https://appshunter.io/ios/app/id6450877469)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1个月会员 | $5.99 | one-time |
| 学生1年会员 | $14.99 | one-time |
| 3个月会员 | $14.99 | one-time |
| 6个月会员 | $19.99 | one-time |
| 1年会员 | $29.99 | one-time |
| 2年会员 | $49.99 | one-time |


### Duck Calculator

[App page](https://appshunter.io/ios/app/duck-calculator/id6739608733)

This app appears as a standard calculator but has a hidden "magic" mode. It can display preset text or images when a specific number is calculated, offering creative surprises for pranks or confessions.

**Highlights:** Accurate standard calculations, Magic mode for custom results, Display preset text or pictures, Customizable magic effects, Secret and low-key design

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

**In-app purchases:** none


## Frequently asked questions

### Is 睿图 free?

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

### Is Duck Calculator free?

Duck Calculator costs $0.99, with no in-app purchases.

### Do 睿图 or Duck Calculator have ads?

Neither 睿图 nor Duck Calculator shows ads.

### Which is updated more often, 睿图 or Duck Calculator?

睿图 ships an update every 5 months, and Duck Calculator every 7 months. Most recently, 睿图 was updated on October 13, 2026 and Duck Calculator on October 11, 2026.

---

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