Written 9 Sep 2026. This is a how-to, not a product card.

A second phone is two apps

Mint one enroll code on Plan or ByteRush. It adds a passkey to the same Labthrift login. Export both notebooks before you wipe.

One passkey. Two notebooks. The enroll link from Plan opens Plan. The ByteRush link opens Profile. The code itself works on either app.

Lab plan

While signed in on the old phone, open Settings → create an enroll code. On the new phone open the link, or type the username and code on the gate. That adds a passkey to the same Labthrift account. Detail: keep a lab plan with a passkey.

ByteRush

While signed in on the old phone, open You → Enroll another device. On the new phone open the link, or type the username and code on the profile gate. A Plan enroll code works here too. Same login: one Labthrift passkey.

Before you wipe

Export Plan JSON and ByteRush progress on the phone you still control. That walk is export the plan before you wipe a phone.

What next

Rooms: how the three sites fit. One weekend list: the weekend path is one list.

Skip

• Skip expecting Plan JSON to load in ByteRush.
• Skip wiping the only phone that still has the ByteRush passkey.
• Skip email recovery. There is none.