Cerulean vs Pudding Scan
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Multiple utility tools
- Minimalist design
- Simple to use
- User feedback welcome
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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。~~~
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.
- Scan paper documents to PDF
- Batch image text extraction
- Text translation
- Automatic document correction
- Accurate edge trimming
- Multiple filter enhancements
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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
Verdict
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
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 — 392 and 210 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. Both last shipped on October 14, 2026.
| Parameter | Cerulean | Pudding Scan |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (392 ratings) | 4.9 (210 ratings) — better |
| Positive reviews | 85.5% of reviews | 90.9% of reviews — better |
| Number of ratings | 392 — better | 210 |
| Update frequency | Every 2 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Subscription |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 13 — better |
| Further details — not scored | ||
| Size | 48 MB | 146 MB |
| Age rating | 4+ | 4+ |
| Developer | 丹 张 | 广东天宸网络科技有限公司 |
Customer experience
Cerulean
Pudding Scan
User reviews
Cerulean
From 392 App Store ratingsWhat 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 ratingsWhat 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
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- 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
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- 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
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- 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
Cerulean
No in-app purchases
Pudding Scan
- Auto-renewal monthly plan1 Month trial$0.991 Month
- Auto-renewal monthly plan$0.991 Month
- Monthly Subscription1 Month trial$3.991 Month
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- Monthly Subscription$3.991 Month
- Annual Subscription$9.991 Year
- Annual Subscription$31.991 Year
- Annual Subscription1 Year trial$31.991 Year
- 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
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- Lifetime membership$29.99








