Comparison

ChatLLM vs C

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

Head to head
About

ChatLLM

Access multiple advanced AI models for chat, content creation, and task automation. Features include an autonomous AI agent, real-time meeting transcription, and voice interaction. Generate images, videos, and code, or analyze documents with this comprehensive AI assistant.

Highlights
  • Autonomous AI agent for complex tasks
  • Real-time meeting transcription and insights
  • Multi-model AI chat (GPT-5, Opus, Gemini)
  • Image and video generation
  • Voice chat with multiple AI voices
  • AI-powered web research
  • Code execution and debugging
Features
Read full description

ChatLLM – The Most Powerful AI Assistant on Mobile Chat, Create, Listen & Automate with State-of-the-Art AI ChatLLM brings together the world's best AI models — GPT-5, o4, Opus 4.8, Gemini, DeepSeek, and more — into one app. Chat naturally, generate images and videos, transcribe meetings live, or let the AI Agent autonomously handle complex tasks for you. AGENT — AUTONOMOUS AI AGENT Give the Agent a task and watch it work. It uses multiple AI models, browses the web, writes code, and connects to your tools to complete complex multi-step tasks autonomously. • Research, analyze, and compile reports • Build and deploy websites and apps • Connect to Gmail, Google Drive, Jira, Slack, and more • Track progress with real-time task updates AI LISTENER — REAL-TIME MEETING INTELLIGENCE Record any conversation and get live AI-powered transcription and insights. • Real-time transcription in 100+ languages • AI-generated suggestions while you listen • Automatic session summaries • Custom analysis templates (Key Points, Technical Analysis, or your own) • Chat with AI about any past session • Background recording — switch apps without losing audio ADVANCED AI CHAT Natural, human-like conversations powered by 15+ language models. Ask questions, brainstorm, debug code, or tackle any topic. VOICE CHAT Full voice conversations with AI. Choose from multiple voices, switch between automatic and manual recording modes, and go hands-free. IMAGE & VIDEO GENERATION Turn text into visuals with Nano Banana, Flux Pro Ultra, DALL-E, Imagen, Ideogram, Recraft, and more. Generate videos with VEO 3, Runway, Kling AI, and Minimax. DEEP RESEARCH AI-powered web research with source citations. Get comprehensive, multi-source answers to complex questions with real-time activity tracking. CODE EXECUTION Run code directly in chat. Debug, generate snippets, and test ideas with a built-in terminal and playground. DOCUMENT ANALYSIS Upload files for instant summaries, Q&A, and analysis. Supports PDFs, images with OCR, and more. PERSONALIZATION • Custom instructions for tailored responses • Memory system that learns your preferences • Projects to organize conversations and files • Thinking mode for complex reasoning 15+ AI MODELS IN ONE APP GPT-5 · o4 · Claude Opus 4.8 · Gemini · DeepSeek · Llama · Grok · Qwen · Perplexity · and more Why Choose ChatLLM? • All the best AI models, one subscription • Multi-modal: Text, Voice, Images, Video, Documents • AI Agent for autonomous task completion • AI Listener for meeting intelligence • SOC-2 and HIPAA compliant — your data stays private This app requires a subscription. Plans start at $9.99/month. Terms of service & privacy policy: https://abacus.ai/terms https://abacus.ai/privacy

About

C

Features
Read full description

CTech is a streamlined app that lets users easily view verified company profiles and official documents through secure link-based access. Designed for clarity and simplicity, the app provides a clean interface to browse company details and shared documents in a read-only format. Registration and company profile setup are managed exclusively on our website, while the app focuses on delivering trusted information to all users. CTech does not store any personal data or documents; it only displays content made available by companies through approved channels.

Screenshots

ChatLLM4 screens
C4 screens

Verdict

The call

The clearest difference is in-app purchases: C at none against ChatLLM's 3. C also leads on iOS requirement (12.0 vs 17.0). On price, ads 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. ChatLLM sells 3 in-app purchases, starting at $9.99 per month. C asks for nothing beyond the download.

Scorecard2 real differences · 8 level
ChatLLM versus C: the parameters behind the verdict, then further details
ParameterChatLLMC
PriceFreeFree
Rating4.8 (3.3K ratings) — better—
Positive reviews62.2% of reviews—
Number of ratings3.3K — better—
Update frequencyEvery 4 days—
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscription—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.012.0 — better
Further details — not scored
Size93 MB64 MB
Age rating12+4+
DeveloperAbacus.AIC-TECH ENGINEERING & CONSTRUCTION PRIVATE LIMITED

Bugs and requests

ChatLLM

Reported bugs

5 issues
  • Voice chat is not transcribing
  • Chats disappearing after re-entering the thread
  • App freezing or becoming laggy when generating responses on mobile
  • Voice chat not working
  • App crashing on mobile

Requested features

11 requests
  • Add transcript to the headphone mode
  • Rename a thread
  • Add execution time and other metrics for each request
  • Indicate which LLM served the request when using routeLLM
  • Add an iPad version
Show 6 more
  • Add ability to delete chats on mobile
  • Add voice chat and talk back feature
  • Improve copy/paste functionality
  • Allow selecting text
  • Add ability to set default LLM
  • Improve font size customization

C

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

ChatLLM

Subscriptions3
  • Monthly Subscription$9.991 Month
  • Monthly subscription$9.991 Month
  • Pro Tier$19.991 Month
None

C

No in-app purchases

Questions

Is ChatLLM free?
ChatLLM is free to download, with in-app purchases available.
Is C free?
C is free to download, with no in-app purchases.
Do ChatLLM or C have ads?
Neither ChatLLM nor C shows ads.

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