ChatModel vs Lexis Graph
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ChatModel
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ChatModel is an AI assistant based on Artificial Intelligence technology with multimodal features, map recognition, document recognition, networking and more. networking and more. Welcome to ChatModel, our app combines the latest AI technology to provide you with a new chatting experience. Whether you want to get advice, find answers to your questions, chat about the news, or plan for the future, ChatModel has you covered. It is good at handling a variety of tasks, such as writing essays, writing resumes, travel planning, language translation, recipe recommendations, programming guidance, writing song lyrics, and other tasks. It is good at handling a variety of tasks, such as writing essays, writing resumes, travel planning, language translation, recipe recommendations, programming guidance, writing song lyrics, and more. - Supports streaming output to reduce waiting time. - Supports context association, context segmentation and other functions. - Support picture and file questioning to experience the latest models. - Support switching models, currently 80+, experience different AI. - Support 4o, 4.0, o1, opus, sonnet, gemini, llama3.3, Deepseek, etc., make the answer more intelligent. - Support route switching, extremely fast experience. When encountering a question, the prompt is abnormal, you can try in the setting page - route switching function Do not enter personal information. It may generate offensive or dangerous content.ChatModel is not responsible for the generated content. ChatModel is not responsible for the generated content. - Users can subscribe to full functionality with unlimited access; Subscriptions are charged on an annual basis and will be debited from the iTunes account at the end of the year. - Subscriptions are charged on an annual basis and will be debited from the iTunes account at the time the User confirms the purchase; Users may turn off auto-renewal. - Users may turn off auto-renewal of a subscription 24 hours before the end of the current subscription, or the subscription will automatically renew; An Apple ID with an auto-renewal will be automatically renewed. - An Apple ID with an auto-renewing subscription will be automatically charged to the iTunes Account 24 hours prior to the expiration of each billing cycle and extended for the corresponding period of validity. and extended for the corresponding period of validity. - User-managed subscription services, i.e., you can go to your user account settings to turn off automatic subscriptions after purchase. Privacy Policy: https://sites.google.com/view/chatmodelprivacy Usage Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula.
Lexis Graph
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Understand words through graphs, not isolated memorization. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is iOS requirement: ChatModel at 14.0 against Lexis Graph's 17.0. 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. ChatModel sells 3 in-app purchases, starting at $3.99 per 7 days and Lexis Graph sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
ChatModel ships an update monthly, Lexis Graph every 3 weeks. Both last shipped on October 25, 2026.
| Parameter | ChatModel | Lexis Graph |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 14.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 15 MB | 121 MB |
| Age rating | 9+ | 4+ |
| Developer | Qijie Information | 禹 杜 |
In-app purchases
ChatModel
- Weekly Plus$3.997 Days
- Monthly Plus$12.991 Month
- Annual Plus$119.001 Year
Lexis Graph
- 「Lexis Graph」Pro Monthly$1.991 Month
- 「Lexis Graph」Pro Yearly$14.991 Year
- 「Lexis Graph」Pro Lifetime$19.99









