> ## Documentation Index
> Fetch the complete documentation index at: https://developers.usezend.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Limits and tiers

> What each app tier allows, and the errors you get past a limit.

Every app has a tier: `private`, `public` or `growth`. New apps start on `private`. Approved public apps move to `public`. Ask Zend for `growth`.

## Tier limits

| Limit | private | public | growth |
| - | - | - | - |
| Payment size | \$5 | \$50 | \$100 |
| Sent through your app per user per day | \$20 | \$200 | \$500 |
| Money links per day (whole app) | 20 | 500 | 5,000 |
| Money per link (all uses) | \$5 | \$50 | \$100 |
| People per link | 5 | 50 | 100 |
| Cards per user per day | 20 | 50 | 100 |
| Largest prize | \$20 | \$100 | \$500 |

Zend-wide limits apply on top, for example a \$100 cap per money link and per prize while the contracts are new.

| Error | Limit |
| - | - |
| `APP_LIMIT_AMOUNT` | Payment or link size |
| `APP_LIMIT_DAILY` | Daily spend per user, or links per day |
| `APP_LIMIT_USES` | People per link |
| `CARD_LIMIT` | Cards per user per day |

You can lower the card cap with `limits.cardsPerUserPerDay` in the manifest. Other limits can't be changed from the manifest.

## Network budget

Zend pays the network cost of your app's money links, prizes, joins and random draws, up to a monthly budget per tier:

| Tier | Monthly budget | About this many collected links |
| - | - | - |
| private | 2 SUI | 440 |
| public | 50 SUI | 11,000 |
| growth | 500 SUI | 110,000 |

Past the budget, new links, prizes, joins and draws fail with `APP_GAS_BUDGET` until the 1st of the month (UTC). Collecting, taking back, results and payouts always go through. Plain sends and `pay` cost nothing and aren't counted.

Track usage with:

```bash theme={null}
zend apps info <slug>
```

```text theme={null}
  network:    0.4210 of 2 SUI this month (21%), resets 2026-12-01
```

## Other limits

| What | Limit |
| - | - |
| Apps per account | 10 (`APP_LIMIT`) |
| Interaction `data` | 4 KB |
| Participants per interaction | 50 |
| Draws per interaction | 50 |
| Live room messages | 8 KB each, 20 a second per person |
| Bridge call timeout | 10 minutes (`TIMEOUT`) |


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