Sidekick vs ChatEngine
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sidekick
This AI assistant leverages advanced models like GPT-5.4 and Gemini to provide instant answers, engage in natural conversations, and act as a versatile virtual helper for work, study, and daily tasks. It offers interactive AI characters, voice input, and tools for writing, summarizing documents, and generating images.
- Advanced AI models (GPT-5.4, Gemini)
- Interactive AI characters
- Virtual assistant for tasks
- Voice input and speech recognition
- AI writing and editing tools
- Document summarization and OCR
- AI image generation
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Sidekick AI Chat — the free AI Chatbot and all-in-one AI assistant powered by ChatGPT 5, Claude Sonnet, Gemini 3 Flash, MiniMax 2.7, OpenAI, and advanced AI technology. Chat AI GPT delivers instant answers, AI Chat conversations, creative tools, and personal help for work, study, and life. Meet 18 unique AI Characters and use Free ChatGPT 5 intelligence anywhere. AI CHARACTERS & COMPANIONS Explore 18 fictional AI characters — from a witty debate partner to a curious travel buddy. Each has a distinct voice and style. Dive into storytelling, interactive character adventures, roleplay, and playful conversations powered by AI. AI ASSISTANT & PROJECTS Your versatile virtual assistant handles daily work. Ask AI for help with brainstorming, planning, writing emails, organizing tasks, studying, and translating content. Projects keep chats, files, research, model choices, and web-search settings organized by topic, so your personal AI assistant can stay focused on each goal. Brainstorm ideas, plan trips, solve homework, and manage long-running work in one place. VOICE MODE & VOICE INPUT Speak your questions hands-free with voice typing and speech recognition. Sidekick converts your voice to text instantly, so you can dictate prompts, notes, and messages without typing. Voice input makes asking AI effortless on the go. AI INTELLIGENCE Activate super precision mode for high accuracy on demanding tasks. Get real-time information and reliable answers powered by the OpenAI API. Ask AI complex questions and receive instant, well-sourced replies. Math AI Solver breaks down equations step by step. Pick from top models — Claude Sonnet by Anthropic, Gemini 3 Flash by Google, MiniMax 2.7, and ChatGPT-style intelligence. AI WRITING ASSISTANT Your AI Writer and AI Writing Assistant in one. Draft AI Email replies, polish resumes, write cover letters, and create professional documents in seconds. Grammar checker, text rewriter, tone adjuster, and Chat AI GPT writing help support any language or format. DOC CENTER & WEB TOOLS Summarize web pages, PDFs, text, Markdown files, and pasted links into clear takeaways. The new YouTube Summarizer turns video transcripts into key points, outlines, and follow-up questions. OCR text recognizer extracts text from images and scans. Web Search delivers real-time answers sourced directly from the internet. Summarize, rewrite, and translate any content. AI CAMERA Snap a photo and AI Camera instantly analyzes it. Identify objects, extract text, solve math problems, or understand complex diagrams — all from a single shot. AI IMAGE & VIDEO Turn text to image with a powerful AI Image Generator and AI Art Generator powered by OpenAI GPT Image 1.5 and GPT Image 2. Generate, edit, and regenerate images right in chat. Create stunning AI art, illustrations, and photo-realistic AI photo generation with Dall e 2-3 style prompting, DALL E creative workflows, and Dall e 2-3 inspired results. New Image to Video and Photo to Video tools animate a picture into a short clip from chat or the Generate section. Save creations in My Images and My Videos. AI MUSIC & AI VOICE GENERATOR AI Music tools help shape song ideas, lyrics, and creative direction. AI Music brainstorming pairs with AI Voice and AI Voice Generation to bring content to life. Convert text with a natural text-to-speech reader in multiple languages and generate lifelike narration for videos, presentations, and accessibility. AI COMPANION Meet your AI Companion — a curious, knowledgeable thinking partner always ready to help. Free Chat GPT powers engaging conversations that inform, inspire, and motivate. Free ChatGPT support makes learning, planning, and creative work faster with your personal AI assistant. Terms of Use (EULA): https://sidekk.com/terms Privacy Policy: https://sidekk.com/privacy
ChatEngine
This AI assistant leverages advanced models like GPT-5 and Gemini to help with writing, image generation, document summarization, and problem-solving. It offers a suite of tools for creative tasks, productivity boosts, and academic assistance.
- AI text generation
- AI image generation
- Document summarization and rewriting
- Image-to-text conversion (OCR)
- AI homework helper
- Resume and cover letter builder
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Meet ChatEngine – Your Ultimate AI Chat Assistant Say hello to ChatEngine, your all-in-one intelligent chatbot built on today’s most advanced large language models. This powerful AI assistant is designed to streamline your daily workflow, enhance productivity, and ignite your creativity—helping with everything from writing and problem-solving to brainstorming and beyond! What can ChatEngine do? Explore our full range of smart, versatile, and practical features designed to simplify your life: AI WRITING & TEXT GENERATION TOOL This intelligent writing assistant can craft compelling copy, social posts, speeches, and creative outlines. It functions as a professional AI editor that can proofread, refine, and elevate your text instantly. CREATIVE AI IMAGE GENERATOR Turn your words into art! Simply describe what you want, and ChatEngine transforms your ideas into stunning visuals. Ready to create your first AI-generated masterpiece? SMART DOCUMENT CENTER Effortlessly translate, proofread, or analyze text materials with your personal pocket assistant. Break down long paragraphs and extract core information seamlessly. IMAGE-TO-TEXT CONVERTER (OCR) Share any photo, document snippet, or screenshot, and ChatEngine’s advanced text recognizer will extract the characters accurately and instantly. TAILORED AI EXPERTS ChatEngine features a specialized crew of smart assistants! Whether you are exploring business planning concepts, researching general learning topics, or practicing a new language, your dedicated AI crew is always ready to assist. EFFORTLESS SUMMARY CREATOR Powered by industry-leading AI infrastructure, ChatEngine acts as your summarizing superpower. It condenses lengthy content, long articles, or busy transcripts into clear, concise key points. DAILY PRODUCTIVITY PARTNER Need to structure a professional sales email or format a business proposal? ChatEngine has you covered. Utilize our specialized templates to craft professional materials and boost your work efficiency in minutes. LEARNING & CONCEPT HELPER ChatEngine makes tough concepts easy to grasp. It helps you break down complex logic step-by-step, providing clear explanations for mathematics, science, and languages. ADVANCED AI VISION Need a photo caption, recipe inspiration, or design context? Just upload an image and let AI Vision provide helpful tips, creative analysis, and instant visual interpretation. CURATED PROMPT LIBRARY Access a rich collection of ready-made prompts for any task—from video scripts to career planning outlines. These pre-configured inputs spark immediate inspiration and streamline your workflow. Simplify your daily tasks, unleash your imagination, and achieve more—all inside one secure application. Experience the true potential of modern AI with ChatEngine today! PREMIUM SUBSCRIPTION Subscribe to unlock unlimited access and higher token capacity for all premium features. Subscription plans automatically renew through your App Store account according to your selected billing cycle (weekly, monthly, or annually) unless auto-renew is turned off at least 24 hours prior to the end of the current period. Privacy Policy: https://sites.google.com/view/chatengineprivacypolicy Terms of Use: https://sites.google.com/view/chat-engine-terms-of-service
Screenshots
Verdict
The clearest difference is ratings volume: ChatEngine at 163 against Sidekick's 8. ChatEngine also leads on rating (4.7 vs 4.5) and iOS requirement (16.0 vs 18.0). On price, update cadence, ads and in-app purchases 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. Sidekick sells 6 in-app purchases, starting at $3.99 per 7 days and ChatEngine sells 11 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.
ChatEngine holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: ChatEngine has 163 ratings behind it against 8, so its average is the more settled of the two.
Sidekick ships an update every 11 days, ChatEngine every 3 weeks. The most recent releases landed on October 14, 2026 and October 17, 2026 respectively.
| Parameter | Sidekick | ChatEngine |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (8 ratings) | 4.7 (163 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 8 | 163 — better |
| Update frequency | Every 11 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Freemium |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 94 MB | 61 MB |
| Age rating | 17+ | 4+ |
| Developer | SonderSpot OU | AIONIX |
Customer experience
Sidekick
ChatEngine
In-app purchases
Sidekick
- Pro Weekly$3.997 Days
- PRO Weekly Trial3 Days trial$7.997 Days
- PRO Monthly$19.991 Month
Show 3 moreShow fewer
- PRO Yearly$29.991 Year
- PRO Yearly$39.991 Year
- PRO Yearly$59.991 Year
ChatEngine
- ChatHub 1 Week Pro$7.997 Days
- ChatHub AI Plus-Weekly3 Days trial$7.997 Days
- ChatEngine 1 Week Pro$9.997 Days
Show 5 moreShow fewer
- ChatHub AI Plus-Weekly7 Days trial$9.997 Days
- ChatHub 1 Week Pro7 Days trial$19.997 Days
- ChatHub AI Plus-Yearly$39.991 Year
- ChatHub AI Plus-Yearly$59.991 Year
- ChatEngine AI Plus-Yearly$99.991 Year
- chatengine_60_credits$4.99
- chatengine_200_credits$14.99
- chatengine_500_credits$29.99









