# Pricing

One plan. Priced in bytes.

Zinn is an Experimental kanban CLI for you and your agents.

Zinn is [MIT licensed](https://raw.githubusercontent.com/yethranayeh/zinn/refs/heads/main/LICENSE), so there is no monetary charge. You don't have to create an account, or find a seat for you and your team to sit on. You still pay, the way you pay for all free software: in download, disk, memory, time, output, electricity and your internet bill. This page is the bill.

```sh
npm i -g @zinn-dev/cli
```

[GitHub](https://github.com/yethranayeh/zinn) · [npm](https://www.npmjs.com/package/@zinn-dev/cli) · [Installation docs](https://zinn.sh/docs/installation)

## Billed by download

- Gross: 1.4 MB, 1,394,087 B, compressed packages, with dependencies.
- Net: 226 KB, 226,413 B, compressed Zinn packages, 16.2% of the download.

## What you pay, in order

1. Download: 1.4 MB. Over your connection, once per update. 1,394,087 B of compressed packages.
2. Unpack: 7.3 MB. On your disk, in 1,188 files.
3. First command: 82 MB, 0.12 s. Memory and time for one task list. Memory comes back when it exits.
4. Idle: Nothing. The command has exited. No background process, no memory, and no writes until you call it again.

## Usage calculator

What a project of your size costs, at the sizes we measured. Each task has one comment. The list figures are for `zinn task list`.

| Tasks | Database | List time | List memory | List output | As JSON |
| --- | --- | --- | --- | --- | --- |
| 1 | 123 KB | 0.12 s | 79 MB | 64 B | 717 B |
| 10 | 147 KB | 0.12 s | 80 MB | 650 B | 7.1 KB |
| 100 | 471 KB | 0.12 s | 82 MB | 6.6 KB | 71.5 KB |
| 1,000 | 3.1 MB | 0.18 s | 94 MB | 67.0 KB | 715.9 KB |
| 1,585 | 4.8 MB | 0.24 s | 101 MB | 106.2 KB | 1.1 MB |
| 2,512 | 7.4 MB | 0.34 s | 114 MB | 168.3 KB | 1.8 MB |
| 3,981 | 11.7 MB | 0.56 s | 134 MB | 266.7 KB | 2.9 MB |
| 6,310 | 18.5 MB | 1.38 s | 171 MB | 422.8 KB | 4.5 MB |
| 7,943 | 23.2 MB | 2.32 s | 173 MB | 532.2 KB | 5.7 MB |
| 10,000 | 29.0 MB | 3.70 s | 188 MB | 680.0 KB | 7.2 MB |

An empty database is 123 KB. In large projects, a task adds about 1.6 KB and a comment about 1.3 KB. Each task command also appends about 370 B to a local usage record, up to 100 MB and kept 90 days. [Telemetry settings](https://zinn.sh/docs/data#telemetry) turn it off.

## Running costs

What an agent has to read, against a database of 100 tasks and 100 comments. Output is what the command prints.

| Command | Output | Memory | Time | Electricity |
| --- | --- | --- | --- | --- |
| `zinn task list` | 6.6 KB | 82 MB | 0.12 s | 0.21 mWh |
| `zinn task list --json` | 71.5 KB | 82 MB | 0.12 s | 0.20 mWh |
| `zinn task view` | 737 B | 79 MB | 0.11 s | 0.20 mWh |
| `zinn task create` | 66 B | 81 MB | 0.16 s | 0.24 mWh |

38 MB of that memory and 0.06 mWh of that electricity is Node itself. Estimated processor energy above idle, on an M4 MacBook Pro.

## Compare plans

All one of them.

| Feature | Zinn |
| --- | --- |
| Monetary charge | None |
| License | MIT |
| Accounts | None to create |
| Seats | None to find |
| Agents | Bring your own |
| Renewal | Updates, when you want them |
| Annual discount | Nothing to discount |
| Your data | On your machine |

## Frequently asked questions

### Can I cancel anytime?

Yes.

```sh
npm uninstall -g @zinn-dev/cli
```

Uninstalling leaves your data in place, in the Zinn directory.

### Is there a free trial?

You are free to try, and encouraged to keep using it.

### Do you offer annual billing?

Billing happens when you update, and you choose when.

```sh
npm i -g @zinn-dev/cli@latest
```

### What are the overage charges?

Commands cost more as a project grows. Listing 10,000 tasks takes 3.70 seconds and 188 MB. The calculator above has the other sizes.

### Do you offer refunds?

You can uninstall and your lost disk bytes come back. Memory already comes back every time a command exits. The electricity does not come back.

### Does it cost anything when I am not using it?

No. Zinn runs only when you call it. No background process, no memory, no writes.

## Enterprise

Same plan. Same bytes. [Contact sales](https://zinn.sh/contact).

Measured with CLI 0.44.0 and the packages it installs. Memory and time are medians of five runs on Node 26.13.0, macOS arm64. Each task has a 40-character title, a 200-character description and one 200-character comment.

CLI 0.44.0 checksum `sha512-dUxF1gS3EVUTdJqNsrNiaCQvLiQlO/9dGvOjuGzy9rleK6vBBeABH0yWIsPeMz7ggKs/OW/BPkKHl2PSZMGRZA==`, from `npm view @zinn-dev/cli@0.44.0 dist.integrity`.