# Cerulean vs Pudding Scan

The clearest difference is in-app purchases: Cerulean at none against Pudding Scan's 11. Pudding Scan's advantage is iOS requirement (13 vs 15.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Pudding Scan sells 11 in-app purchases, starting at $0.99 per month. Cerulean asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.8 for Cerulean against 4.9 for Pudding Scan. Both are backed by a comparable volume of ratings — 390 and 211 respectively. Written reviews are what separate them: 85% of Cerulean's written reviews are positive against 91% of Pudding Scan's.

Cerulean ships an update every 2 months, Pudding Scan every 5 weeks. The most recent releases landed on September 22, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Cerulean | Pudding Scan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (390 ratings)](https://appshunter.io/ios/app/cerulean/id1381352370/reviews) | **[4.9 (211 ratings)](https://appshunter.io/ios/app/pudding-scan/id1626815079/reviews)** |
| Number of ratings | **390** | 211 |
| Positive reviews | 84.9% of reviews | **90.9% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | **Free** | Subscription |
| Size | 49 MB | 146 MB |
| Requires iOS | 15.0 | **13** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [丹 张](https://appshunter.io/developer/1381352369) | [广东天宸网络科技有限公司](https://appshunter.io/developer/1716282065) |

## What reviewers say

### Cerulean

[App page](https://appshunter.io/ios/app/cerulean/id1381352370)

A collection of minimalist utility tools designed for simplicity and ease of use. Provides various small functions to help with everyday tasks. Feedback is welcomed for improvements and new ideas.

**Highlights:** Multiple utility tools, Minimalist design, Simple to use, User feedback welcome

**Features:** Siri integration

**In-app purchases:** none

**What reviewers like**

- 👍 Very interesting and useful
- 👍 Great and free to use
- 👍 No ads, clean interface
- 👍 Very comprehensive toolset
- 👍 Good and simple

**What reviewers complain about**

- ❓ Limitation unclear, is it free?
- ❓ App is entirely in Chinese, no English option
- ❓ Ruler function has issues on iOS 17
- ❓ Volume is too low for sound-related features
- ❓ Search functionality is poor

**Reported bugs**

- Ruler function has issues on iOS 17
- Volume is too low for sound-related features (metronome, call simulation)
- Search functionality is poor
- Calculator button missing on iPad Pro
- Ruler is inaccurate on 12 mini

**Requested features**

- Add more small features
- Add currency conversion function
- Add data and Chinese uppercase number conversion
- Consider adding various unit conversion functions


### Pudding Scan

[App page](https://appshunter.io/ios/app/pudding-scan/id1626815079)

Transform paper documents into high-quality PDF files with a single tap. This ad-free scanner offers batch text extraction, translation, and automatic correction for various use cases, from students to teachers and personal learning.

**Highlights:** Scan paper documents to PDF, Batch image text extraction, Text translation, Automatic document correction, Accurate edge trimming, Multiple filter enhancements

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Auto-renewal monthly plan | $0.99 | per month |
| Auto-renewal monthly plan | $0.99 | per month |
| Monthly Subscription | $3.99 | per month |
| Monthly Subscription | $3.99 | per month |
| Annual Subscription | $9.99 | per year |
| Annual Subscription | $31.99 | per year |
| Annual Subscription | $31.99 | per year |
| 1-month membership | $1.99 | one-time |
| 布丁扫描会员(一年会员优惠) | $9.99 | one-time |
| 布丁扫描会员(一年会员) | $14.99 | one-time |
| Lifetime membership | $29.99 | one-time |


## Frequently asked questions

### Is Cerulean free?

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

### Is Pudding Scan free?

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

### Which has better reviews, Cerulean or Pudding Scan?

Pudding Scan is rated higher. Cerulean averages 4.8 out of 5 from 390 ratings, while Pudding Scan averages 4.9 from 211 ratings.

### Do Cerulean or Pudding Scan have ads?

Neither Cerulean nor Pudding Scan shows ads.

### Which is updated more often, Cerulean or Pudding Scan?

Cerulean ships an update every 2 months, and Pudding Scan every 5 weeks. Most recently, Cerulean was updated on September 22, 2026 and Pudding Scan on September 21, 2026.

---

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