SF Parking Apps Compared
Karl Parks vs SpotAngels vs ParkMobile
Three San Francisco parking apps. Three different jobs. Here's the honest comparison — what each one does, when to use which, and how they fit together.
By Karl Parks, independent parking data project. Last updated April 2026.
TL;DR
Karl Parks, SpotAngels, and ParkMobile solve three different parking problems in San Francisco. Karl Parks predicts block-level parking pressure using 206M+ historical meter transactions. SpotAngels crowdsources street-cleaning and parking-rule data. ParkMobile lets you pay for metered parking and reserve garages from your phone. Most SF drivers benefit from using two of the three together.
Side-by-side comparison
| Feature | Karl Parks | SpotAngels | ParkMobile |
|---|---|---|---|
| Primary job | Predict where street parking opens up | Show parking rules + crowd-sourced availability | Pay for parking (meters and garages) |
| Coverage in SF | All ~28,000 metered blocks | SF + most major US/EU cities | SFMTA meters + partner garages citywide |
| Data type | Historical patterns from 206M+ SFMTA meter transactions | Crowdsourced + scraped street signs | Live transaction data (you pay through it) |
| Real-time spot finding | Predicted typical occupancy (not live) | Live crowdsourced reports | Garage availability only |
| Future-time planning | Yes — scrub 168 hours ahead | Limited | Reserve a garage in advance |
| Pay for parking | No | No (links out) | Yes — core feature |
| Street-cleaning alerts | On the roadmap | Yes | No |
| Pricing (consumer) | Free; Premium $5.99/mo or $39.99/yr (7-day trial) | Free; Premium upgrade available | Free app; transaction fee per session (~$0.30+) |
| Platforms | iPhone | iOS, Android | iOS, Android, Web |
What each app actually does
Karl Parks: predict where parking opens up
Karl Parks is a predictive heatmap of San Francisco street parking. It analyzes 206 million historical SFMTA meter transactions to model typical occupancy for every metered block, every hour of the week. Drivers can scrub 168 hours of weekly patterns to plan when and where to park before leaving home.
Best for: planning ahead, picking a target block, and choosing between two neighborhoods based on parking pressure.
SpotAngels: crowdsource live spots and read every sign
SpotAngels (founded 2014) combines crowdsourced reports from drivers with scraped street-sign and street-cleaning data. It tells you when a nearby car is leaving and what the parking rules are on the block you're looking at. It covers SF plus most major US and European cities.
Best for: live availability when you're already in the neighborhood, and avoiding street-sweeping tickets.
ParkMobile: pay the meter without coins
ParkMobile is a parking-payment app — an official SFMTA partner — used to pay for metered street parking and reserve spots in partner garages. It is not a discovery tool. You arrive at a spot, type the meter number, and pay from your phone. It also extends sessions remotely.
Best for: paying meters without coins, extending time without walking back, and reserving garages in advance.
When to use which
- Planning a trip into SF tomorrow: Karl Parks. See which blocks near your destination typically clear up at your arrival hour.
- Already circling a neighborhood: SpotAngels. Live crowd reports beat historical averages when you're seconds from a decision.
- Just parked, need to feed the meter: ParkMobile (or PayByPhone). Pay from your phone, extend remotely.
- Going to a Giants game and want a reserved garage space: ParkMobile or SpotHero — reserve a garage in advance.
- Lived here for years and just want to stop guessing: Karl Parks. The historical patterns are surprisingly stable week to week.
Pricing
| App | Free tier | Paid |
|---|---|---|
| Karl Parks | Heatmap, current-hour view, 3 block lookups/day | $5.99/mo or $39.99/yr — unlimited lookups, full 168-hour scrubber, push alerts, ad-free. 7-day trial. |
| SpotAngels | Parking-rules viewer, basic crowd reports | Premium upgrade for advanced features (pricing varies — check the app store) |
| ParkMobile | Free download; transaction fee per session | Optional ParkMobile Premium for reservations and fee discounts |
Bottom line
These apps are not really competitors. Karl Parks is a planning tool. SpotAngels is a live-discovery tool. ParkMobile is a payment tool. If you only download one app, pick the one that matches the problem you actually have.
For many SF drivers, a useful stack is Karl Parks + ParkMobile: predict where to go, then pay once you arrive.
Frequently asked questions
What is the best parking app for San Francisco?
There is no single best app — the three solve different problems. Karl Parks is best for predicting where you'll find a spot before you leave home. SpotAngels is best for live availability and parking rules. ParkMobile is best for paying for metered parking and reserving garages. Many SF drivers use Karl Parks plus ParkMobile together: Karl tells you where to drive, ParkMobile pays the meter once you arrive.
How is Karl Parks different from SpotAngels?
SpotAngels relies on crowdsourcing — drivers report when they leave a spot, and the app scrapes street-sign data for parking rules. Karl Parks uses historical SFMTA meter transactions (206M+) to predict typical occupancy patterns block by block, hour by hour. SpotAngels answers "is this spot open right now?" Karl Parks answers "where am I likely to find a spot at 3pm Thursday?"
Can I pay for SF parking with Karl Parks?
No. Karl Parks does not handle payments. To pay for metered SF parking, use ParkMobile (the SFMTA's official partner) or PayByPhone. Karl Parks is purely a prediction layer — it tells you where to look for a spot, not how to pay once you find one.
Does ParkMobile show real-time parking availability?
Only for partner garages. ParkMobile is primarily a payment app for street meters and reservations for garages. It does not predict or crowdsource street-spot availability the way Karl Parks or SpotAngels do.
Which app should I use first when driving into SF?
Use Karl Parks before you leave to identify a target neighborhood and time when parking is statistically open. Switch to SpotAngels in the car to confirm live conditions and check street-cleaning rules. Use ParkMobile to pay the meter once parked. The three are complements, not direct competitors.
Are there other SF parking apps worth considering?
PayByPhone (the other major SFMTA payment partner), SpotHero (garage reservations), and Google Maps and Apple Maps (basic garage info). For street parking specifically, Karl Parks and SpotAngels are the two purpose-built options.