Iron Horse Atlas Get the app
Free on the App Store
Iron Horse Atlas app icon: a green and brass steam locomotive with a book on its smokebox door

Iron Horse Atlas

Every great locomotive, in full — from Stephenson's Rocket to the L0 maglev. A different train each morning, a signal box full of quizzes, and a historian on the wire.

Download on theApp Store iPhone · No account · Nothing to enter
48Locomotives
11Quiz modes
108Questions
4Eras
Inside the app

Four rooms in the shed

One tab for reading, one for testing what stuck, one for asking, and one that keeps score. Each is built like a part of a working railway.

01

The atlasForty-eight machines, in full

Rocket to the L0 maglev, each with what it was built for, what it weighed, how fast it really ran and where the survivors stand today. Overview, history, legacy, a data plate and a fact file on every card.

02

The signal boxFind out what stuck

Eleven quiz engines and a Daily Run that keeps a streak. Every answer comes with the explanation and a way back to the card.

03

The telegraphAsk the historian

Put a question, weigh two locomotives against each other, ask for the long version of one machine's story, or learn the terms of the trade one at a time — and pin the reply to its card.

AskCompareDeep DiveRail Terms
Why did the Deltic replace 55 Pacifics?
Two Napier engines, 3,300 hp, and no fire to clean. Twenty-two of them could keep the East Coast timetable a fleet of steam could not.
Pinned to Class 55 Deltic
04

The roundhouseMove up from Cleaner

Every driver started with a rag and a cold engine. Read cards and take runs to move up the grades, fill the collection by era and region, and earn thirteen badges on the footplate.

Cleaner
Fireman
Driver
Master of the Rail
Why it stays on the phone

Built like a museum label, not a listicle

Real figures, real dates, and the one line about each machine that is worth passing on.

Train of the Day

One card and one fact worth passing on, every morning. It changes at midnight and waits for you until then — with an optional local reminder.

Data plates that mean something

Builder, power, top speed, mass and units built on every card. Speeds in km/h or mph — Mallard's record reads 126 mph if you prefer.

A Daily Run with a streak

Ten questions from the whole atlas, one run a day. Keep it seven days for Week on Rails, thirty for Month on Rails.

Eleven ways to be tested

Guess the Train, Faster or Slower, Speed Round, Era Challenge, Records & Firsts, Year Spotter, Builder's Plate, Fact File, First to Run and Three Strikes — on Easy, Normal or Hard.

A historian on the wire

Ask anything, compare two machines point by point, take a deep dive on one, or learn 49 railway terms in conversation. Works out of the box — nothing to enter.

Everything stays on the device

Reading marks, roster, pinned notes, the run book and your streak live in three files inside the app. No account, and nothing is held anywhere else.

The catalogue

From the first boiler to the last maglev

Forty-eight cards across four eras and four regions, filtered by period, traction or the record books.

1804–1960

Steam Age

Fire, water and rods. Everything the railways became was proved by these machines first.

15 cards
1930–today

Diesel Era

The engine that could be switched off overnight, and the workshops that emptied because of it.

11 cards
1900–today

Electric Era

Power made somewhere else and delivered by wire — quieter, cleaner, and far harder to build.

7 cards
1964–today

High-Speed Age

Dedicated track, sealed bodies and signalling in the cab. Distance measured in hours, not miles.

15 cards
Records & firstsA few of the cards
202.8km/hMallardWorld steam record, 3 July 1938
574.8km/hTGV POSFastest wheeled train ever, 2007
603km/hJR-Maglev L0Fastest with people aboard, 2015
548tUnion Pacific Big BoyHeavier than a loaded 747
1829Stephenson's RocketWon the Rainhill Trials
1813Puffing BillyOldest steam locomotive in existence
431km/hShanghai MaglevFastest commercial service
350km/hFuxing CR400AFFastest scheduled trains, daily
238km/hInterCity 125Diesel world record, 1987
100mphFlying ScotsmanFirst authenticated, 1934
331km/hSNCF CC 7107A record that stood 26 years
4,714Chinese QJNew mainline steam as late as 1988
The wire is open

Send a message to the shed

A card that needs a correction, a locomotive that should be in the atlas, or a question about the app — write and we will answer.

inbox@elemengens.site
  • Suggest a machine for the next catalogue update
  • Report a figure or a date you believe is wrong
  • Ask about privacy, data or the historian
Goes to inbox@elemengens.site
Message sent ✓ — thank you. We usually reply within a couple of days.
Iron Horse Atlas app icon

Light the fire.

Forty-eight locomotives, a train every morning, and a historian who never tires of the question. Free on iPhone.