Upgrade with prior license evidence.

Upgrade checkout is for customers with an existing Day Shift license who need coverage for a later release line. The website verifies eligibility on the server before Stripe checkout and prices eligible upgrades at 50% of the target release-line license.

Paste the contents of your prior Day Shift license file. We verify that it qualifies for the upgrade price before sending you to hosted checkout.

Release-line upgrade

Price: 50% one-time upgrade
Audience: Existing commercial license holders

Move to the next covered release line after a prior Day Shift license is verified.

Prior 0.1.x coverage is verified before 0.2.x checkout.

Start upgrade checkout

Eligibility check: /api/upgrade/eligibility

How upgrade verification works

We check the prior license before checkout so the discounted upgrade price is only offered when the purchase qualifies.
If the license cannot be verified, checkout stops and no payment details are requested on this page.
Hosted checkout handles payment collection after eligibility is confirmed.

What stays local

Your prior license is checked only to confirm upgrade eligibility.
If the license cannot be verified, checkout will not continue.
Payment details are handled by hosted checkout rather than this page.
After installation, normal Day Shift license checks remain local and offline-capable.