Automated · every 2 minutes
Train Checks
During check windows (5–8:40 am and 2–6 pm, London time) the app wakes every 2 minutes, checks National Rail for problems, and texts or emails you if your train is disrupted.
⏰
Scheduler
Wakes the app every 2 mins
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🚆
National Rail
Fetches live departure board
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Crickle App
Spots delays & cancellations
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Database
Skips if already alerted
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Resend
Sends email alert
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Twilio
Sends SMS alert
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👤
You
Notified before you leave
On demand · by email
Updating Your Settings
Email [email protected] in plain English — “stop alerts on Fridays”, “add SMS”, “unsubscribe” etc. Claude AI reads it and applies the change.
👤
You
Send an email in plain English
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Cloudflare
Receives & routes your email
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Claude AI
Understands your request
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Crickle App
Validates & applies changes
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Database
Settings saved
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Resend
Confirmation sent back to you
On demand · browser
Viewing This Website
Every page on crickletrains.co.uk is generated live from the database. No caching — subscriber schedules and run logs are always current.
🌐
Your Browser
Visits crickletrains.co.uk
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Cloudflare
DNS & traffic routing
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Railway
Cloud hosting platform
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Crickle App
Builds the HTML page
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Database
Reads live data
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📄
This Page
Always up to date
Components
Railway
Cloud server that runs the app 24/7
PostgreSQL
Database — stores subscribers, logs & state
Cloudflare
Routes web traffic and inbound email
Claude AI
Reads plain-English emails, extracts changes
🚆
Darwin API
National Rail's live departure data feed
Resend
Sends transactional emails
Twilio
Sends SMS text messages
Flask
Python web framework powering this app
GitHub
Source code & auto-deploy to Railway