Comparison

ChatModel vs Tutu Watermark

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

Head to head
About

ChatModel

Features
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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.

About

Tutu Watermark

Features
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The functions of adding watermarks to images are as follows: -Custom watermark text -Definition of watermark color -Custom Transparency of Watermark Text -Custom watermark text angle -Custom watermark spacing -Custom watermark line height

Screenshots

ChatModel3 screens
Tutu Watermark4 screens

Verdict

The call

The clearest difference is iOS requirement: Tutu Watermark at 12.0 against ChatModel's 14.0. 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

CostPrice ¡ In-app purchases ¡ Ads ¡ Monetization

Both are free to download. ChatModel sells 3 in-app purchases, starting at $3.99 per 7 days and Tutu Watermark sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

ChatModel ships an update monthly, Tutu Watermark every 3 weeks. Both last shipped on October 25, 2026.

Scorecard1 real difference ¡ 5 level
ChatModel versus Tutu Watermark: the parameters behind the verdict, then further details
ParameterChatModelTutu Watermark
PriceFreeFree
Update frequencyMonthlyEvery 3 weeks — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.012.0 — better
Further details — not scored
Size15 MB30 MB
Age rating9+4+
DeveloperQijie Information单 厉

In-app purchases

3 purchases

ChatModel

Subscriptions3
  • Weekly Plus$3.997 Days
  • Monthly Plus$12.991 Month
  • Annual Plus$119.001 Year
1 purchases

Tutu Watermark

One-time1
  • Permanent card$3.99

Questions

Is ChatModel free?
ChatModel is free to download, with in-app purchases available.
Is Tutu Watermark free?
Tutu Watermark is free to download, with in-app purchases available.
Do ChatModel or Tutu Watermark have ads?
Neither ChatModel nor Tutu Watermark shows ads.
Which is updated more often, ChatModel or Tutu Watermark?
ChatModel ships an update monthly, and Tutu Watermark every 3 weeks. Most recently, ChatModel was updated on October 25, 2026 and Tutu Watermark on October 25, 2026.

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