Comparison

Caltrain Commuter vs ISS Flyover

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

Head to head
About

Caltrain Commuter

Plan your train journeys with real-time updates on schedules, delays, and alerts. Customize notifications for your commute and Clipper card. Access comprehensive train status information directly from your device.

Highlights
  • Real-time train status
  • Customizable notifications
  • Schedule viewing
  • Delay information
  • Clipper card alerts
  • System-wide alerts
Features
Currently charting
Read full description

- Set up your commute and your watched trains. - Customize your notifications. - Set monthly clipper card notifications. - Customize your home page. - See Caltrain’s status, system-wide and specific alerts, and upcoming schedule changes. - Use the schedule page to see upcoming trains, trains for the whole day, or trains on a different date, with real-time data included. - Full scrollable timetable. - Accurate, up-to-date realtime data for all trains, regardless of whether the train is reporting location or not. - Delay information including holding times and delay trends (whether the delay is increasing or decreasing). - Schedule automatically updates every time the app is opened – no need for an app update! - No ads, no subscriptions. Data is provided by 511.org. Caltrain Commuter is an independently developed app and is not affiliated with Caltrain, the PCJPB, or any Caltrain-related entity.

About

ISS Flyover

Features
Read full description

ISS Flyover helps you track the International Space Station from your iPhone. See the current ISS position on a map, understand where it is relative to your location, and check upcoming visible flyovers from your sky. The app can also prepare alerts before visible passes, with widgets and Live Activities to keep the next flyover close at hand. No account is required. ISS Flyover is free and focused on one job: making ISS passes easier to anticipate.

Screenshots

Caltrain Commuter4 screens
ISS Flyover4 screens

Verdict

The call

The clearest difference is price: ISS Flyover at Free against Caltrain Commuter's $3.99. Caltrain Commuter's advantage is chart position (#175 vs unranked) and device support (3 vs 1). On update cadence, ads and in-app purchases 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

ISS Flyover is free to download; Caltrain Commuter costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Caltrain Commuter ships an update every 2 weeks, ISS Flyover fortnightly. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 7 level
Caltrain Commuter versus ISS Flyover: the parameters behind the verdict, then further details
ParameterCaltrain CommuterISS Flyover
Price$3.99Free — better
Rating5.0 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 2 weeksFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
Best chart rank#175 — better—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better26.0
Further details — not scored
Size23 MB10 MB
Age rating4+4+
DeveloperNoah ListgartenYannis Perrier

In-app purchases

None

Caltrain Commuter

No in-app purchases

None

ISS Flyover

No in-app purchases

Questions

Is Caltrain Commuter free?
Caltrain Commuter costs $3.99, with no in-app purchases.
Is ISS Flyover free?
ISS Flyover is free to download, with no in-app purchases.
Do Caltrain Commuter or ISS Flyover have ads?
Neither Caltrain Commuter nor ISS Flyover shows ads.
Which is updated more often, Caltrain Commuter or ISS Flyover?
Caltrain Commuter ships an update every 2 weeks, and ISS Flyover fortnightly. Most recently, Caltrain Commuter was updated on October 27, 2026 and ISS Flyover on October 31, 2026.

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