DC Metro vs SensorLogger
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DC Metro
Get real-time train arrival information for Washington DC's metro system. Organize your favorite stops and view a subway map to easily navigate stations.
- Real-time train arrivals
- Favorite stop organization
- Subway map browsing
- Station finder
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Quickly access train arrivals for any metro stop in the Washington DC area. You can also add and organize your most frequently used metro stops, or browse a subway map to find stations. This app is not published, sponsored or approved by WMATA.
SensorLogger
Record acceleration, gyroscope, and magnetic field data in real-time or at higher frequencies. Export your sensor readings as a CSV file for further analysis. Optimize data collection by toggling visualization settings.
- Log acceleration, gyroscope, and magnetic field
- Synchronous sensor measurement
- Real-time data visualization
- Adjustable sampling frequency
- Export data as CSV file
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A logger App that can measure acceleration, gyroscope, and magnetic field synchronously, then export as a CSV file. The measured values can be visualized in real-time by enabling "Realtime visualization". On the other hand, when you want to measure at a more accurate frequency, disabling "Realtime visualization" is preferred. Also, if the sampling rate is set too high, the same value may be sampled many times depending on the hardware specifications.
Screenshots
Verdict
The clearest difference is price: DC Metro at Free against SensorLogger's $0.99. DC Metro also leads on device support (3 vs 1). SensorLogger's advantage is rating (4.5 vs 3.0) and update cadence (every 3 weeks vs every 7 months). On ratings volume, ads, in-app purchases and iOS requirement 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
DC Metro is free to download; SensorLogger costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
SensorLogger holds the better App Store score, 4.5 against 3.0. Both are backed by a comparable volume of ratings — 6 and 11 respectively. Written reviews point the same way: 61% of DC Metro's written reviews are positive against 78% of SensorLogger's.
DC Metro ships an update every 7 months, SensorLogger every 3 weeks. The most recent releases landed on September 22, 2026 and September 21, 2026 respectively.
| Parameter | DC Metro | SensorLogger |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 3.0 (6 ratings) | 4.5 (11 ratings) — better |
| Positive reviews | 61.0% of reviews | 78.3% of reviews — better |
| Number of ratings | 6 | 11 — better |
| Update frequency | Every 7 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 17.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Justin Cohen | Kazumasa Wakamori |
Customer experience
DC Metro
SensorLogger
In-app purchases
DC Metro
No in-app purchases
SensorLogger
No in-app purchases
Questions
Is DC Metro free?
Is SensorLogger free?
Which has better reviews, DC Metro or SensorLogger?
Do DC Metro or SensorLogger have ads?
Which is updated more often, DC Metro or SensorLogger?
Other comparisons
