Comparison

Caltrain+ vs Fog & Fern

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Caltrain+

Plan your Caltrain trips with ease. Get real-time schedules, find the fastest routes, and view service alerts. Perfect for commuters and occasional riders needing to navigate the Caltrain system efficiently.

Highlights
  • Trip planning by departure and arrival station
  • View full timetables
  • Access service alerts
  • System map integration
  • Filter by 'arrive by' time
  • View scheduled stops for each train
Features
Read full description

Caltrain+ is a Caltrain schedule and trip planning app that lets you quickly and easily figure out which train to take to get you from Station A to Station B. Additionally you can view full timetables, service alerts, and a system map all from within the app. To use Caltrain+, simply select the station you want to depart from, the station you want to arrive at, and the timetable (Weekday or Weekend), and Caltrain+ will show you a complete list of every matching train you could take along with its number, service type (i.e. Local, Limited, Express, or South County Connector), departure and arrival time, and trip duration. Optionally specify an “arrive by” time to filter the list of trains to only include those which will get you to your destination station before the specified time. You can also view the full list of scheduled stops for a particular train just by tapping on it. Transit data provided by 511.org. Icon made by Freepik from www.flaticon.com.

About

Fog & Fern

Discover San Francisco's hidden green spaces with this app. It helps you find, visit, and track all the city's parks, from major landmarks to secret gardens. Get directions and inspiration to explore new places.

Highlights
  • Browse all San Francisco parks on a map
  • Track visited parks and progress
  • Get directions to parks
  • Discover random unvisited parks
  • Sync progress with iCloud
Features
Read full description

Discover the hidden green spaces that make San Francisco unique. Fog & Fern helps you find, visit, and keep track of every park in the city—whether you’re exploring a neighborhood you’ve never seen or revisiting a favorite spot. • Browse All Parks: View a curated map of San Francisco’s official parks—from major landmarks to secret pocket gardens. • Track Your Visits: Mark parks as visited and see how many you’ve explored so far. • Get Directions: Launch native directions to any park with a single tap. • Be Inspired: Shake your phone to select a random unvisited park. • Sync with iCloud: Your progress stays private and synced across your devices. Whether you’re a local looking for new places to relax or a visitor wanting to explore beyond the guidebooks, Fog & Fern turns every day into a chance to discover somewhere new.

Screenshots

Caltrain+4 screens
Fog & Fern4 screens

Verdict

The call

The clearest difference is in-app purchases: Caltrain+ at none against Fog & Fern's 3. Caltrain+ also leads on ratings volume (2.4K vs 1) and iOS requirement (16.0 vs 18.0). Fog & Fern's advantage is review sentiment (100% vs 86%). On price, rating, update cadence and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Fog & Fern sells 3 one-off in-app purchases. Caltrain+ asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Fog & Fern holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Caltrain+ has 2.4K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 86% of Caltrain+'s written reviews are positive against 100% of Fog & Fern's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 5 level
Caltrain+ versus Fog & Fern: the parameters behind the verdict, then further details
ParameterCaltrain+Fog & Fern
PriceFreeFree
Rating4.8 (2.4K ratings)5.0 (1 ratings) — better
Positive reviews85.7% of reviews100.0% of reviews — better
Number of ratings2.4K — better1
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhoneiPhone
Requires iOS16.0 — better18.0
Further details — not scored
Size16 MB5 MB
Age rating4+4+
DeveloperJonathan SahooKyle Olivo

Customer experience

Caltrain+

All ratings2,344 ratings
Positive96.3%
Neutral1.4%
Negative2.3%
Written reviews35 reviews
Positive85.7%
Neutral0.0%
Negative14.3%

Fog & Fern

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Caltrain+

Reported bugs

2 issues
  • App doesn't open
  • Unable to process payments

Requested features

3 requests
  • Expand service to Gilroy
  • Post more info on the app like ticketing and upcoming changes
  • Add dark mode

Fog & Fern

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Caltrain+

No in-app purchases

3 purchases

Fog & Fern

One-time3
  • Small Tip$1.99
  • Medium Tip$4.99
  • Large Tip$9.99

Questions

Is Caltrain+ free?
Caltrain+ is free to download, with no in-app purchases.
Is Fog & Fern free?
Fog & Fern is free to download, with in-app purchases available.
Which has better reviews, Caltrain+ or Fog & Fern?
Fog & Fern is rated higher. Caltrain+ averages 4.8 out of 5 from 2.4K ratings, while Fog & Fern averages 5.0 from 1 ratings.
Do Caltrain+ or Fog & Fern have ads?
Neither Caltrain+ nor Fog & Fern shows ads.
Which is updated more often, Caltrain+ or Fog & Fern?
Caltrain+ ships an update every 3 weeks, and Fog & Fern every 3 weeks. Most recently, Caltrain+ was updated on November 7, 2026 and Fog & Fern on October 30, 2026.

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