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The subscription picker opens from Account → Upgrade plan. It shows the three plans as cards, lowest to highest, with a Monthly / Annual switch on top that changes all three prices at once.
Subscriptions are not enabled yet: for now every account shows as Basic and you can use the full editor without limits. The plans below are the reference for what each one will include.

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The three plans

Basic

Free, forever.To get started and try the tool.

Plus

$6.50 / moFor projects that outgrew the free plan.Marked as Most popular.

Pro

$18 / moTo work without watching the limits.

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Comparison

Every plan lists the same points in the same order, so you can compare reading across.

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Billing cycles

The switch above the cards alternates between two cycles:
The list price, and the one shown every time the window opens. The big number is what you pay per month.
The big number becomes the yearly total: the monthly price times twelve, with no discount. Below it, the per-month figure —“$6.50 per month, billed once a year”— so you can read it against the monthly price.

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What you see depending on your plan

  • The plan you already have shows a disabled button reading Current plan; you do not buy it again.
  • The featured plan —Plus— carries a Most popular badge sitting on its top border.
  • The free plan shows Free and, below, Forever, instead of a price with a cycle.

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What does not depend on the plan

Everything that does not touch the limits above is included in any plan:
  • Both editing modes, digital and analog.
  • The four protocol readers: UART, CAN, I2C and Modbus.
  • The CKP / CMP generator.
  • Templates, the clipboard shared between tabs, and history.
  • The connection to the ESP32 generator over USB, which is a local link and does not go through any server.
  • Exporting to a file (metadata is what the cards mark as a paid-plan feature).