LastCall Companion
A mobile companion for nights out: one tap when someone starts drinking turns it into a smart home screen that surfaces a designated-driver contact, nearby taxi options, an Uber/Lyft estimate with a saved home address, and auto-shares live location with a chosen contact.
Social drinkers and their friends who want a frictionless 'get me home safe' button after a few drinks
- One-tap 'going out' mode that pre-loads home address, fare estimates, and a designated-driver contact
- Auto-share live location with a chosen friend that expires when you tap 'home safe'
- Detection of typical bar-to-home walking/driving routes and gentle prompts if you start a car
- Restaurant and bar partnerships that surface the button as an in-app code or QR
Impaired-driving charges like the recent Hamilton multi-vehicle crash keep the issue top of mind; venues, insurers, and friends are all looking for a simple friction-reducer that beats 'just take an Uber.'
Adjacent 'Designated Driving Service Apps' market reported at ~$2.3B in 2025 with 12.4% CAGR, but the direct-purpose app 'Designated' hasn't received enough ratings on the US/CA App Store to even display an overview — sparse real demand at this exact wedge.Designated Driving Service Apps Market Size | CAGR 12.4 Forecast 2033 ↗Designated App - App Store ↗
A near-identical competitor called 'Designated' (Honorius Neogy) already does one-tap Uber/Lyft with home pre-filled, live-location SMS to contacts, watcher network, AND adds passive gait-based impairment detection — LastCall is essentially a less-feature-rich copy.Designated App - App Store ↗
Designated is free with no IAP/monetization tier documented, suggesting unproven willingness to pay for this exact wedge; rideshare deep-links can't generate commission, and insurer/venue B2B deals are slow.Designated App - App Store ↗
Impaired-driving enforcement and rideshare adoption are structurally persistent tailwinds; adjacent rideshare insurance market growing — the underlying need should outlast the specific app form.Rideshare Insurance Market Share Analysis Report 2026-2030 ↗Ride Sharing Market Size, Share, Growth | Industry Report, 2034 ↗
Core flow is a thin wrapper over Maps/Uber/Lyft deep-links, contact SMS, and live-location sharing — trivially buildable in a weekend; only the optional passive gait-detection layer adds real sensor/background-engineering complexity.Designated App - App Store ↗