Ontario · Quebec · British Columbia · Built in Toronto
Fewer risky left turns, every drive.
Every navigation app gives you the fastest route. Lefty gives you the one that skips the unprotected left across four lanes and keeps you on divided highways, and shows you exactly what that costs in minutes. Usually two or three.
Free on the App Store for iPhone, with CarPlay. Lefty Plus is optional.
Measured, not promised
Same start, same end. Fewer risky turns.
Sixteen typical Toronto trips, routed both ways on the same map data.
fewer unsignalized left turns on the Lefty route.
fewer left turns of any kind.
driving time. About 40 seconds on a 25-minute trip.
From EzPanda's routing study, September 2026: 16 trips between well-known Toronto places, OpenStreetMap data. Results vary by trip; some trips have no risky lefts to remove and are unchanged.
How it works
One search. Two routes. You choose.
Search a destination
Lefty plans two routes: the fastest, and the one with fewer risky left turns and less undivided highway.
See the trade-off
Each card shows minutes, distance, how many lefts, how many are unsignalized, and how much two-lane road. Pick either.
Drive with guidance
Turn-by-turn instructions, spoken if you like. Lefty never claims a turn is safe; it just gives you fewer hard ones.
In the car
Everything you expect from a navigation app.
Lefty is a full navigation app on your iPhone and on your car's screen, free.
CarPlay
The map follows your car, with turn-by-turn directions on the car's screen and Where to? with Home, Work, favourites and recent places. Works with the phone locked.
Spoken guidance
Exit numbers and road signs read out at a sensible pace. The voice turns down while you're on a phone call.
A stop on the way
Add a coffee or a pickup mid-trip from the phone or the car. Lefty keeps routing around risky lefts on both legs.
Road event alerts
Police, crashes, hazards, closures and more, reported by other drivers with one tap and announced when they're ahead on your route.
Red light cameras
"Red light camera ahead" for cameras from cities' open data.
"That felt risky"
One tap after a turn that felt wrong. Enough taps at the same corner and Lefty starts steering drivers around it.
What it avoids
Risk, ranked the way drivers experience it.
Lefty's router treats every left turn and every road as a cost. The riskier it is, the harder the router works to route around it.
| Situation | How Lefty treats it |
|---|---|
| Unsignalized left across a major road | Avoided |
| Two-way road at 70 km/h (45 mph) or more with nothing between you and oncoming traffic | Strongly discouraged |
| Gravel and unpaved roads | Strongly discouraged |
| Blind left: the queue of cars turning left opposite you hides oncoming traffic | DiscouragedAvoidable in Settings |
| Signalized left with no confirmed protected phase | Discouraged |
| Signalized left with a confirmed green arrow or advance green, at the times it runs | Ordinary turn |
| Right turns, straight through, divided highways | No penalty |
Signal locations and road types come from OpenStreetMap. Arrow phases come from municipal data where cities publish it and from Lefty drivers everywhere else. When Lefty isn't sure an arrow exists, it assumes there isn't one.
Community
Drivers teach Lefty where the arrows are.
No map records which lights have an advance green, or when it runs. Drivers see it every day. When you're stopped at a signalized left on your route, Lefty asks one question: is this left protected? A green arrow or a flashing green advance counts; a flashing yellow arrow does not. When enough drivers agree, that intersection is confirmed for everyone, for that time of day.
Only while stopped
The question appears after you've been stopped for a few seconds and disappears the moment you move. Never while driving.
Confirmed by agreement
A single answer never changes routing. Three independent drivers agreeing does. Disputed intersections stay cautious.
Earn Lefty Plus
Points for every answer, more when your intersection is confirmed. 150 points unlocks a month of Lefty Plus, and every 100 more adds another month. Ranks run from Rookie to Left Legend.
Pricing
Free to drive safer. Plus for the details.
- Lefty route and fastest route, side by side
- Spoken turn-by-turn guidance, on the phone and in CarPlay
- A stop on the way, favourites and recent places
- Road event and red light camera alerts
- Points, ranks and Lefty Plus you can earn
- Ontario, Quebec and British Columbia
- Live left-turn arrows: right now, and at your departure time
- Cottage-country mode: prefer divided highways
- Plan for later: routes for your departure time
- Trip history and export
Prices shown in Canadian dollars; the App Store shows the price in your currency. Subscriptions renew automatically until cancelled in iPhone Settings › Subscriptions. Or earn Plus without paying: 150 points unlocks a month. See our refund policy and terms.
Questions
Straight answers.
Does Lefty tell me when a turn is safe?
No, and it never will. Lefty reduces how many risky turns are on your route. At every turn you still look, judge and decide. No app can see what you can see.
Where does it work?
Ontario, Quebec and British Columbia today. Elsewhere Lefty shows Apple's route and says so. Confirmed arrow data is densest in Toronto, where the city published signal phase data; elsewhere it grows as drivers answer the arrow question.
Does Lefty work in CarPlay?
Yes, free. The map, turn-by-turn directions, Where to?, reports and the protected-left question all work on your car's screen, even with the phone locked in your pocket.
Does Lefty track me?
Your position is used to plan the route and guide you, and is not stored on our servers. Reports you choose to make include the intersection location and an anonymous device code. Trip history stays on your phone. Details in the privacy policy.
Why is the Lefty route sometimes the same as the fastest?
Because the fastest route already had no risky lefts to remove. Lefty shows you both so you can see that, rather than pretending it found something.