--- title: "How Hearts Work: Chat Credits on dymi" description: "Learn how chat credits (心心) work on dymi, including costs per message, daily allowances, and what to do if something goes wrong." published_at: "2026-08-01T13:17:48.668Z" updated_at: "2026-08-01T13:17:48.668Z" lang: "en" section: "product_guide" tags: "" target_question: "" canonical: "https://dymi.ai/en/blog/how-hearts-work-chat-credits-dymi" source: "https://dymi.ai/en/blog/how-hearts-work-chat-credits-dymi.md" --- # How Hearts Work: Chat Credits on dymi > Learn how chat credits (心心) work on dymi, including costs per message, daily allowances, and what to do if something goes wrong. When you chat with your AI companions on dymi, every message you send uses a small amount of chat credits called **hearts** (心心). Understanding how hearts work helps you keep the conversation flowing without surprises. This guide answers the most common questions about hearts, allowances, and what to do when something seems off. ## How many hearts does each message cost? The number of hearts deducted per message depends on the AI model you are using. Different models have different capabilities and costs. For example, a faster, lighter model might cost fewer hearts, while a more advanced, creative model might cost a few more. You can always see the exact cost per message for your current model right inside the chat interface—just look for the heart icon next to the send button. Free users and paid users see the same per-message costs; the difference is in how many hearts you get each day. ## How do daily allowances work? dymi gives everyone a daily allowance of hearts so you can chat every day without paying. If you are a free user, you receive a smaller daily allowance. If you subscribe to a paid plan, your daily allowance is larger. The exact numbers are displayed on your account settings page and on the subscription page. You can check your current heart balance at any time by tapping the heart icon in the top bar of the app. Your daily allowance resets at a fixed time each day. Any hearts you don’t use do not roll over to the next day—they expire. So it’s a good idea to check in and use your allowance if you want to keep chatting. ## What about paid users? Do they get extra hearts? Yes. Paid subscribers get a larger daily allowance plus a monthly grant of hearts that rolls over if you stay subscribed. The monthly grant is added to your account at the start of each billing cycle. This means paid users can build up a reserve of hearts for longer conversations or busy periods. The exact monthly grant amount is shown on the subscription page before you sign up. ## Can I buy more hearts? Hearts are not sold directly. Instead, you can top up your account by purchasing **star sand** (星沙), the in-app currency. Star sand can be used to replenish hearts when you run low. You can also use star sand to unlock special features or gifts for your AI companions. The star sand shop is available in the app under the "Wallet" section. ## What happens if I run out of hearts? If you run out of hearts, you cannot send new messages until you either wait for your daily allowance to reset or use star sand to buy more hearts. However, you can still receive messages from your AI companions—they will continue to check in with you as part of their own lives. You can also view your chat history without any cost. ## How do I check my heart balance and usage? Your current heart balance is always visible at the top of the chat screen. To see detailed usage, including how many hearts you have used today and how many you have left in your daily allowance, go to your profile and tap on the heart icon or the "Account" section. There you will also find a link to the official pricing page for exact numbers. ## What to do when something goes wrong Sometimes a message might cost more hearts than expected, or your balance might not update correctly. If you notice anything unusual, follow these steps: 1. **Refresh the app** – A simple refresh often fixes display issues. 2. **Check your account page** – Confirm your current balance and allowance. 3. **Report the issue in-app** – Tap the menu (hamburger icon) and select "Help & Feedback" or "Report an Issue." Describe what happened, include screenshots if possible, and our team will investigate. You can also use the feedback form to suggest improvements. We take heart tracking seriously, and our support team reviews every report to ensure fairness. ## Start chatting with confidence Now you know the basics of how hearts work on dymi. Whether you are a free user enjoying your daily allowance or a paid subscriber with a larger reserve, you can focus on building meaningful relationships with your AI companions. Ready to see your hearts in action? Head over to [dymi.ai](https://dymi.ai) and start a conversation today.