Comparison

Cerulean vs Pudding Scan

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Cerulean

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
Read full description

多种小功能整理,极致简约。 如在使用中遇见任何问题或有新的创意,欢迎发送邮件反馈至我的邮箱cerulean_log@163.com,我会尽快处理哒。~~~

About

Pudding Scan

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
Read full description

A professional, green and ad-free scanning software that can scan paper documents into pdf electronic files with one click, allowing for sharing and printing anytime and anywhere. Batch image text extraction and translation, accurate and efficient; The specific common scenarios are as follows: -- Common Scenarios -- "Student, Staff The blackboard writing and PPT in class and meetings can be automatically corrected and saved with one click. The operation is convenient and easy to review, organize and understand in the future. "Teacher High-quality exercises in the workbook can be scanned and extracted, and multiple questions can be combined and exported to word to create test papers, reducing the workload. "Personal Learning Enhancement Read books and posts anytime and anywhere, scan and extract the essence of the text, and simply accumulate wisdom. -- Functional Features -- "Take a photo to generate an electronic copy With just one tap, the document can be automatically corrected to generate an ultra-clear electronic version. "Accurate document trimming It can automatically and accurately identify the edges of any text or image content carrier and crop them in one step. "Multiple filters Enhanced With multiple filters such as soft, enhanced, brightened and grayscale, it automatically removes the messy background of the picture and highlights the clear contrast of the text. --Automatic renewal rules-- 1. Subscription service A) Pudding scanning continuous monthly subscription (1 month) B) Pudding Scanning Continuous monthly subscription (1 month) B) Pudding Scanning Continuous annual Package (1 year) 2. Subscription price A) Continuous monthly subscription (1 month), $0.99 for the first month and $3.99 per month thereafter B) Continuous monthly subscription (1 month), $3.99 per month C) Continuous annual package (1 year), $21.99 per month for the first year and $31.99 per month for subsequent years 3 Payment: After the user confirms the purchase and makes the payment, it will be credited to the iTunes account 4. Automatic renewal: Apple iTunes accounts will be charged within 24 hours before expiration. Once the deduction is successful, the subscription period will be extended by one subscription cycle 5. Disable the service: You can go to "Settings" on your iPhone --> Enter "iTunes Store & App Store"--> click" Apple ID", select" View Apple ID", enter the "Account Settings" page, click "Subscribe", manage the automatic subscription service, and if need the consumption will be closed 24 hours before the end of each billing cycle. No further charges will be made within 24 hours before the expiration. 6.Privacy Policy:https://www.budingscan.com/scanner/wk2504014c133101 Terms of Use:https://www.budingscan.com/scanner/wk2504013d5afc59 Auto-Renewal Service Rules:https://www.budingscan.com/scanner/wk250630a6f167b8 Membership Services:https://www.budingscan.com/scanner/wk25063083060016

Screenshots

Cerulean4 screens
Pudding Scan4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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 — 392 and 210 respectively. Written reviews are what separate them: 85% of Cerulean's written reviews are positive against 91% of Pudding Scan's.

UpkeepUpdate frequency

Cerulean ships an update every 2 months, Pudding Scan every 5 weeks. Both last shipped on October 14, 2026.

Scorecard3 real differences · 7 level
Cerulean versus Pudding Scan: the parameters behind the verdict, then further details
ParameterCeruleanPudding Scan
PriceFreeFree
Rating4.8 (392 ratings)4.9 (210 ratings) — better
Positive reviews85.5% of reviews90.9% of reviews — better
Number of ratings392 — better210
Update frequencyEvery 2 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterSubscription
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.013 — better
Further details — not scored
Size48 MB146 MB
Age rating4+4+
Developer丹 张广东天宸网络科技有限公司

Customer experience

Cerulean

All ratings392 ratings
Positive94.4%
Neutral2.3%
Negative3.3%
Written reviews55 reviews
Positive85.5%
Neutral7.3%
Negative7.3%

Pudding Scan

All ratings210 ratings
Positive97.6%
Neutral0.5%
Negative1.9%
Written reviews55 reviews
Positive90.9%
Neutral1.8%
Negative7.3%

User reviews

Cerulean

From 392 App Store ratings

What we love

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

Room to improve

  • ❓ 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

Pudding Scan

From 210 App Store ratings

What we love

  • ✨ Clean and simple interface
  • 🆓 Free to use
  • 🚫 No annoying ads
  • 💯 High-quality scans
  • 🗂️ Powerful PDF conversion

Room to improve

  • 💰 Transitioning to paid features
  • 💸 High perceived cost for features
  • 📉 Declining user experience with updates
  • 🚶‍♂️ WeChat login redirect issue
  • 🤏 Limited close-up focus

Bugs and requests

Cerulean

Reported bugs

9 issues
  • 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
Show 4 more
  • Widget background is white, hard to see text
  • Text to speech and keyboard issues on iPhone X
  • Image stitching (chat history) missing on iPhone 12
  • Widget support removed for iOS 13

Requested features

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

Pudding Scan

Reported bugs

7 issues
  • WeChat login redirects to phone login
  • App crashes or shows black screen on iPhone 13 Pro Max with iOS 17.0
  • App shows 'loading' and won't open after update
  • App crashes on iOS 13.3.1
  • Test paper erasure only allows selecting one image
Show 2 more
  • Direct sharing of images results in severe pixel compression
  • Scanning results disappear after switching apps

Requested features

20 requests
  • Improve filter functionality
  • Add finger removal feature
  • Enhance auto-scan capabilities
  • Improve PDF to image processing
  • Add multiple document combinations for ID scanning
Show 15 more
  • Add volume button for scanning
  • Add dark mode
  • Simplify document opening and navigation
  • Add pull-down to exit document feature
  • Add left swipe to return feature
  • Remove left/right document browsing
  • Improve close-up focus for scanning
  • Add text-to-speech functionality
  • Add ability to change phone number account binding
  • Add option to re-select initial interface functions
  • Add cloud storage for Android
  • Add text straightening for scanned books
  • Add ability to apply 'remove shadow' to all pages
  • Add long image generation for sharing after scanning
  • Add border for easier positioning in photo interface

In-app purchases

None

Cerulean

No in-app purchases

11 purchases

Pudding Scan

Subscriptions7
  • Auto-renewal monthly plan1 Month trial$0.991 Month
  • Auto-renewal monthly plan$0.991 Month
  • Monthly Subscription1 Month trial$3.991 Month
Show 4 more
  • Monthly Subscription$3.991 Month
  • Annual Subscription$9.991 Year
  • Annual Subscription$31.991 Year
  • Annual Subscription1 Year trial$31.991 Year
One-time4
  • 1-month membership$1.99
  • 布丁扫描会员(一年会员优惠)$9.99
  • 布丁扫描会员(一年会员)$14.99
Show 1 more
  • Lifetime membership$29.99

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 392 ratings, while Pudding Scan averages 4.9 from 210 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 October 14, 2026 and Pudding Scan on October 14, 2026.

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