# DC Metro vs SensorLogger

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.

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.

## The numbers

| Metric | DC Metro | SensorLogger |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [3.0 (6 ratings)](https://appshunter.io/ios/app/dc-metro/id296564541/reviews) | **[4.5 (11 ratings)](https://appshunter.io/ios/app/sensorlogger-csv-export/id1505203547/reviews)** |
| Number of ratings | 6 | **11** |
| Positive reviews | 61.0% of reviews | **78.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Monetization | **Free** | Paid |
| Size | 3 MB | 2 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Justin Cohen](https://appshunter.io/developer/296564544) | [Kazumasa Wakamori](https://appshunter.io/developer/1505203546) |

## What reviewers say

### DC Metro

[App page](https://appshunter.io/ios/app/dc-metro/id296564541)

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.

**Highlights:** Real-time train arrivals, Favorite stop organization, Subway map browsing, Station finder

**Features:** macOS Compatibility

**In-app purchases:** none


### SensorLogger

[App page](https://appshunter.io/ios/app/sensorlogger-csv-export/id1505203547)

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.

**Highlights:** Log acceleration, gyroscope, and magnetic field, Synchronous sensor measurement, Real-time data visualization, Adjustable sampling frequency, Export data as CSV file

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is DC Metro free?

DC Metro is free to download, with no in-app purchases.

### Is SensorLogger free?

SensorLogger costs $0.99, with no in-app purchases.

### Which has better reviews, DC Metro or SensorLogger?

SensorLogger is rated higher. DC Metro averages 3.0 out of 5 from 6 ratings, while SensorLogger averages 4.5 from 11 ratings.

### Do DC Metro or SensorLogger have ads?

Neither DC Metro nor SensorLogger shows ads.

### Which is updated more often, DC Metro or SensorLogger?

DC Metro ships an update every 7 months, and SensorLogger every 3 weeks. Most recently, DC Metro was updated on September 22, 2026 and SensorLogger on September 21, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*