With a Tiimo Pro subscription, you get access to all features across platforms. You can pay monthly or save by subscribing for a full year at a discounted price. Tiimo also offers a free version with a selection of planning tools to help you get started (on iOS app only - web app not included).
The web app is one of the premium features, and it is therefore required to have an active trial or subscription to be able to access it.
How do I switch plans?
To switch plans, go to the platform where you originally subscribed (App Store or web):
If you subscribed via the App Store: 
→ Open your Apple Account (Settings → tap your name at the top)
→ Tap Subscriptions
→ Find and tap Tiimo
→ Choose a different plan or make other changes
If you subscribed on the Web Planner (via Stripe):
→ Log in at webapp.tiimoapp.com
→ Go to Settings → Account → Manage subscriptions
→ Enter the email you used to sign up
 ↳ If you signed up using Apple ID with Hide My Email, enter your Apple private relay email, not your regular Apple ID
→ Check your inbox for a login link
→ Click the link to access your account and change your subscription
Please note: it is not possible to manage a subscription which was purchased on App Store on Stripe, and vice versa.
If you tried to receive a link to manage your subscriptions on Stripe, but the link hasn't arrived to your email - please double check that your subscription was not purchased on App Store.