# Gantry SG — ERP, balance & alerts in view

> ERP, balance & alerts in view (iPhone/iPad app by Linlay Lee.)

- Source: https://appshunter.io/ios/app/gantry-sg/id6789116526 (this page in markdown: same URL + `.md`)
- Developer: [Linlay Lee](https://appshunter.io/developer/6789116528)
- Category: Navigation, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 18.0 · 21 MB
- Languages: American English
- Released: 2026-07-22
- Data updated: 2026-07-30
- User reviews in markdown: https://appshunter.io/ios/app/gantry-sg/id6789116526/reviews.md

## What is Gantry SG?

Gantry keeps the things you actually need while driving — your ERP road-pricing
charges, cashcard balance, speed, and road alerts — 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
• ERP charges and cashcard deductions, the moment they happen
• Your card balance — with a heads-up before it runs low
• Current speed and speed-limit signs
• Speed cameras, parking availability, travel times, and official LTA road-sign alerts
• A big, legible clock and speed when nothing else needs your attention

BUILT TO STAY OUT OF YOUR WAY
• A priority-driven layout decides what matters most at each moment
• A built-in preview mirrors the display, so you can set it up and confirm it works before you drive
• An Activity feed logs every charge, deduction, and alert so nothing goes unnoticed
• Live Activities and widgets keep your balance on the Lock Screen and trip status in the Dynamic Island
• Pair by scanning a QR code — then it reconnects automatically every time you get in
• 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 — 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 — 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.


## Version history (last 3 releases)

### 1.2.1 — 2026-07-26

* Improvements on multi-driver support 
* Bug fixes

### 1.2.0 — 2026-07-26

* New EV Charger Availability feature
* Bug Fixes

### 1.0 — 2026-07-22

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-30.*