Rosso Speedometer: a GPS speedometer and nothing else

FOR IMMEDIATE RELEASE


One analog gauge on a pure black screen. No maps, no ads, no account, no trip history.


TOKYO, October 2026 — Lightning LLC today announced Rosso Speedometer for iPhone, a GPS speedometer that does one thing: show your speed. A single, finely drawn analog gauge fills a pure black screen, with a polished metal bezel, a deep dial, a glowing needle and an arc of light that follows your speed. There are no maps, no ads, no account and no trip history.


"We wanted a GPS speedometer that is simple and good-looking, and nothing more," the Lightning LLC team said. "So we spent our time on the gauge itself and left everything else out."


Just the gauge

Zero sits at the bottom of the dial and the needle sweeps 270 degrees, with top speed at the right. A digital readout sits in the lower right. Below the gauge, Rosso Speedometer shows four numbers: distance, top speed, average speed and elapsed time.


Highlights

- Three dials: black, yellow and red. Same design, different color.
- km/h or mph, with five scales: 40, 80, 180, 260 and 340 km/h (25, 50, 120, 160 and 220 mph), from bikes and boats up to high-speed trains.
- Portrait and landscape.
- Keeps measuring in the background and with the screen locked.
- Auto Power Off: stay stopped for 5, 10 or 30 minutes and GPS turns itself off, so a forgotten session does not drain the battery. Traffic lights and traffic jams do not trigger it.
- Private by design: no account, no ads, no analytics. Location never leaves the iPhone, and no trip history is kept. The app has no server.

Where it fits

Rosso Speedometer is for people who like to see their speed on a train, on a ferry, from the passenger seat, or on a bike with the phone in a mount. It is meant to be set up before you set off. Speed and distance are GPS-based reference values: they can be inaccurate or delayed and may stop updating in tunnels. The app is not a replacement for a vehicle's speedometer. Drivers should not operate it or watch the screen while driving, and should always follow traffic laws.


Pricing and availability

Rosso Speedometer is available now on the App Store for iPhone (iOS 17 or later). It is free for 30 days; after that, a single one-time purchase unlocks it for good. There is no subscription.


- App Store: https://apps.apple.com/us/app/id6819025046?pt=128776234&ct=press-en&mt=8
- Product page: https://ltng.jp/rosso
- Press kit (screenshots, icon, short descriptions): https://ltng.jp/rosso/press

About Lightning LLC

Lightning LLC (合同会社ライトニング) is a small software company in Tokyo, Japan. It makes simple iPhone apps that do one job well, including KeyAlarm (calendar events that ring like alarms), MustDo (a to-do alarm that rings until it's done) and Rosso Speedometer. https://ltng.jp/en


Press contact

Lightning LLC — contact form: https://ltng.jp/en#contact
Email replies come from support@ltng.jp.
