MRT Map vs Gantry SG
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
MRT Map
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MRT Map is an iOS app that helps you find the train stations in Singapore. It uses your deviceβs GPS to show you the train stations around. Tap on train station names to open Apple map/Google map to see the route leads to the stations. Search train stations by name.
Gantry SG
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Gantry keeps the things you actually need while driving β your ERP road-pricing charges, cashcard balance, speed, and road alerts β on a clear, always-on display in your car. Your phone does the work in your pocket; the display is what you watch. Gantry connects to your vehicle's OBU (On-Board Unit) using LTA's official OBU API/SDK, parses the ERP 2.0 messages, and relays just what matters to a dedicated in-car screen over Bluetooth. No more glancing at your phone to check a charge or a low balance. WHAT GANTRY SHOWS β’ ERP charges and cashcard deductions, the moment they happen β’ Your card balance β with a heads-up before it runs low β’ Current speed and speed-limit signs β’ Speed cameras, parking availability, travel times, and official LTA road-sign alerts β’ A big, legible clock and speed when nothing else needs your attention BUILT TO STAY OUT OF YOUR WAY β’ A priority-driven layout decides what matters most at each moment β’ A built-in preview mirrors the display, so you can set it up and confirm it works before you drive β’ An Activity feed logs every charge, deduction, and alert so nothing goes unnoticed β’ Live Activities and widgets keep your balance on the Lock Screen and trip status in the Dynamic Island β’ Pair by scanning a QR code β then it reconnects automatically every time you get in β’ Customise brightness, theme, which alerts to show, message timing, speed, and clock OVER-THE-AIR UPDATES New display firmware is delivered straight from your phone over Bluetooth β verified before installing, with automatic rollback for safety. No wires, no computer. REQUIRES THE GANTRY DISPLAY Gantry is the companion app for the Gantry Display, a round AMOLED screen for your car powered by a single USB-C cable. The app's job is to bridge your OBU and the display β it is not a standalone dashboard, and the hardware display is required to use it. Learn more and order at gantrydisplay.com. Built for Singapore's next-generation ERP.
Screenshots
Verdict
The clearest difference is in-app purchases: Gantry SG at none against MRT Map's 4. Gantry SG also leads on update cadence (every 2 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. MRT Map sells 4 one-off in-app purchases. Gantry SG asks for nothing beyond the download.
MRT Map ships an update monthly, Gantry SG every 2 days. The most recent releases landed on July 22, 2026 and September 17, 2026 respectively.
| Parameter | MRT Map | Gantry SG |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Every 2 days β better |
| Ads | No | No |
| In-app purchases | Yes | No β better |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 β better | 18.0 |
| Further details β not scored | ||
| Size | 10 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | 33 YAGA PTE. LTD. | Linlay Lee |
In-app purchases
MRT Map
- Sponsor$0.99
- Sponsor a bit of tidy sum$2.99
- Sponsor a lot$6.99
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- Sponsor VIP$12.99
Gantry SG
No in-app purchases








