Comparison

ScanX vs DDchat AI

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

Head to head
About

ScanX

This app transforms your mobile device into a powerful document scanner. It captures documents, receipts, and notes, converting them into high-quality PDFs or JPGs. Advanced OCR technology extracts text for editing and sharing across multiple languages.

Highlights
  • Automatic document detection
  • Scan to PDF or JPG
  • OCR text extraction
  • Multi-language OCR support
  • Share documents and text
  • Adjust scan brightness and contrast
Features
Read full description

ScanX is a mobile phone scanner app for your Printed and Handwritten Documents, Receipts, Notes, Invoices, Business Cards, Certificates, Scribbled Notes, Bills, Contract, Memos, Script, Letters, Whiteboard Brain Storming Sessions etc. FEATURES: * Automatic document detection and scanning * Scans to high quality PDF or JPG images * Enhance scans by applying different filters * Adjust the scanned document’s brightness, contrast and saturations * PDF preview within the app * Easily share documents in PDF or JPG format via social media or email attachment * Edit the extracted text using OCR feature in scanned documents in 6 different languages * OCR is supported for following languages: English, Español, Français, العربية, Hindi, Português * Listen the extracted texts or save it for future use * Share extracted texts using email, sms or social media Premium Subscription Services: 1. Edit the extracted text using OCR feature in scanned documents in 6 different languages 2. OCR is supported for following languages: English, Español, Français, العربية, Hindi, Português 3. Listen the extracted texts or save it for future use 4. Share extracted texts using email, sms or social media 5. PDF footers are removed. Payment models for Premium Subscription: - 0.99 USD/Month - 9.99 USD/Year Please note that the subscription is automatically renewed at the end of the period unless you choose to cancel the subscription. The free version is an ad-supported version and scanned documents are generated with watermark. We'd love to hear your feedback: scanx@renzym.com

About

DDchat AI

A native iOS AI chat client offering a polished and fluid user experience. It supports multiple AI models and protocols, with advanced features like visualized chain-of-thought and task-specific assistants. All data remains on your device for enhanced privacy.

Highlights
  • Native iOS feel with fluid animations
  • Supports Chat Completions and Anthropic protocols
  • Automatic model capability detection
  • Visualized chain-of-thought reasoning
  • Task-specific AI assistants
  • Inline HTML rendering with Markdown support
  • Privacy-first, zero data upload
Features
Read full description

DDchat AI is a polished, minimalist native iOS AI client with web search, multimodal understanding, and HTML rendering. Connect your own APIs to use different providers and models in one flexible, fluid app. — BEAUTIFUL BY DESIGN — From rounded bubbles to smooth streaming animations, from live scrolling reasoning previews to syntax-highlighted code blocks, every pixel is polished. Full Light and Dark Mode support, liquid glass, and gradient accents create a truly native experience. — OFFICIAL APIs AND THIRD-PARTY GATEWAYS — One app to connect with advanced AI models from around the world. Use DeepSeek, Kimi, MiniMax, Zhipu, MiMo, Qwen, and more. Connect to official providers or compatible third-party gateways, choose your provider, and switch models to suit each task. — AUTOMATIC MODEL CAPABILITY DETECTION — A built-in capability database detects whether a model supports advanced reasoning, vision, tool calling, and more, then applies the appropriate parameters. The database updates silently from the cloud, helping new models work without an app update. — HTML RENDERING ENGINE — HTML tags in AI replies can be rendered directly in the conversation, making cards, tables, lists, and other rich content easier to read. Built-in Markdown parsing and syntax highlighting for 10+ languages, including Python, Swift, Go, and Rust, keep code and quotes clear as well. — MATH AND DIAGRAM RENDERING — Render LaTeX equations and Mermaid diagrams right in your conversations, from formulas to flowcharts and sequence diagrams. Zoom in on diagrams and save them as images for study, organization, or sharing. — WEB SEARCH WITH SOURCES — Use built-in model search or connect a range of independent search services. Models can search and browse the web based on your question, with citations and sources shown directly in the answer so important information is easy to verify. — MULTIMODAL IMAGE UNDERSTANDING — Take a photo or select multiple images from your library and chat directly with vision-capable models. Analyze screenshots, understand scenes, or read text from images with ease. — VISUALIZED REASONING — See a model's reasoning as it is generated, then expand it for more detail. When supported, choose different reasoning levels to balance response speed and depth. — TASK-SPECIFIC ASSISTANTS — Create dedicated AI assistants for different scenarios, such as translation, coding, writing, or research. Each assistant has its own system prompt, sampling parameters, context length, and default model. — ASSISTANT CREATION AND OPTIMIZATION TOOLS — Describe what you need in one sentence, and AI can create a new assistant for you. If the results are not quite right, use another request to refine its prompts and related settings so it works the way you want. — PRIVACY-FIRST, STORED LOCALLY — API keys, chats, and assistant settings are stored locally on your device. Requests go directly to the AI provider you choose, without passing through a DDchat intermediary server. No analytics, no ads, no tracking. — MORE HIGHLIGHTS — - Multi-conversation history grouped by assistant - Fetch model lists online or add models manually - Duplicate, import, and share assistants - Keep streaming replies running in the background and generate with multiple assistants at once Getting started: 1. Add an API provider in Settings, either an official endpoint or a compatible gateway 2. Create an AI assistant and configure its prompt and parameters 3. Choose a model and start chatting Note: This app requires you to provide your own API keys. It does not include or provide any AI service. — CONTACT — For feedback or questions, please email: ddchatsupport@gmail.com

Screenshots

ScanX4 screens
DDchat AI4 screens

Verdict

The call

The clearest difference is rating: DDchat AI at 5.0 against ScanX's 4.1. DDchat AI also leads on update cadence (every 3 days vs fortnightly). ScanX's advantage is review sentiment (100% vs 88%) and monetization model (free with in-app purchases vs paid). On price, ads, in-app purchases and device support 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. ScanX sells 2 in-app purchases, starting at $0.99 per month and DDchat AI sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

DDchat AI holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: ScanX has 8 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 100% of ScanX's written reviews are positive against 88% of DDchat AI's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

ScanX ships an update fortnightly, DDchat AI every 3 days. The most recent releases landed on October 9, 2026 and October 17, 2026 respectively.

Scorecard6 real differences · 4 level
ScanX versus DDchat AI: the parameters behind the verdict, then further details
ParameterScanXDDchat AI
PriceFreeFree
Rating4.1 (8 ratings)5.0 (1 ratings) — better
Positive reviews100.0% of reviews — better87.5% of reviews
Number of ratings8 — better1
Update frequencyFortnightlyEvery 3 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS8.0 — better26.0
Further details — not scored
Size63 MB12 MB
Age rating4+4+
DeveloperYasir Javed俊华 乔

Customer experience

ScanX

All ratings8 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

DDchat AI

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews16 reviews
Positive87.5%
Neutral6.3%
Negative6.3%

In-app purchases

2 purchases

ScanX

Subscriptions2
  • ScanX Pro$0.991 Month
  • ScanX Pro$9.991 Year
2 purchases

DDchat AI

One-time2
  • DDchat Pro Lifetime (Offer)$1.99
  • DDchat Pro Lifetime$9.99

Questions

Is ScanX free?
ScanX is free to download, with in-app purchases available.
Is DDchat AI free?
DDchat AI is free to download, with in-app purchases available.
Which has better reviews, ScanX or DDchat AI?
DDchat AI is rated higher. ScanX averages 4.1 out of 5 from 8 ratings, while DDchat AI averages 5.0 from 1 ratings.
Do ScanX or DDchat AI have ads?
Neither ScanX nor DDchat AI shows ads.
Which is updated more often, ScanX or DDchat AI?
ScanX ships an update fortnightly, and DDchat AI every 3 days. Most recently, ScanX was updated on October 9, 2026 and DDchat AI on October 17, 2026.

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