A revised schedule arrives. What did it break?
Two files read date by date: every flight added, removed, retimed or swapped, the capacity it moved, and the weak spots it opens for your airline.
SSIM Toolkit · Early Access Preview
From raw SSIM file to insight.
The local workbench for airline schedule data. Open the schedule files you already receive and see what changed, where connections break, where you stand — exactly, and entirely on your machine.
Free during the Early Access Preview · macOS and Windows · Pricing · Watch the introduction (4 min)
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Introduction
SSIM Toolkit in four minutes.
What an SSIM schedule file is, who reads one, and how SSIM Toolkit turns it into answers on your own machine.
Start here
A schedule file, read the way a planner thinks.
Airlines exchange schedules as IATA SSIM files: dense lines of fixed-width text, each one a pattern of flights across a season. SSIM Toolkit reads every one and turns it into flights you can question.
Can passengers still connect at the hub?
Banks as waves, every connection judged against your minimum connecting times, and what moving one flight would win or break — before anyone files it.
Where do we stand in each market?
Every market banded sole, dominated, led or contested, your share against each rival, and the gap where you trail.
Is the file sound before it goes further?
Every record checked against the IATA standard, each finding pinned to where it is, with what was expected and what to do.
A look inside
Every page built around a question.
Every route on a map, weighted by how often it flies, with the busiest stations ranked.
Each airport pair with every airline's share of seats and departures, and how its week is built.
A station's role, its connecting banks, and where connections break against the minimum connecting time.
Every aircraft followed through its day, flight after flight.
Two versions side by side: flights added, removed and retimed, and how capacity moved.
Every finding against the IATA SSIM standard, with the record and field it points at.
Your own questions of the schedule in read-only SQL, with results you can export.
Real screens from SSIM Toolkit 0.4 — a sample schedule, with invented airlines.
Markets & competition
Who flies every market, their shares of seats and departures, and how each week is built.
Hubs, banks & connections
Connecting waves, connections against the minimum connecting time, and what a retime would break.
Airlines, aircraft & rotations
Each airline's network, fleet and partners; every aircraft followed through its day.
Compare two files
Flights added, removed and retimed between two versions, and how capacity moved.
Flights & calendar
Every flight-date, searchable, with the season laid out week by week.
Validation & inspector
Every finding against the SSIM standard, with the record and field it points at.
SQL Notebook
Ask your own questions of the schedule in read-only SQL, and keep the answers.
Exports
Every table as Excel, CSV or JSON — the same rows the page shows; a whole data set as Parquet.
Exports & SQL Notebook
Take the answers with you.
Every table leaves as a file, holding the same rows the page shows. When a page doesn't ask your question, the SQL Notebook does — read-only, over every record.
- Excel, CSV or JSON
- From every table in the app — an export holds the same rows the page lists.
- Whole data set
- Every table of a data set as Parquet, for a database, a notebook or a warehouse.
- Data-set bundle
- The whole data set as one zip, for a back-up or a hand-off.
- Print a brief
- A market's brief on one A4 page — or as a workbook with every flight and one-stop option.
Private by design
Your schedules never leave your machine.
Files are read and analysed on your own computer, and never uploaded. How we handle security.
On every page
The small things that save an afternoon.
One bar sets what every page reads
The period, the airlines, the clock and the records a page counts — set once at the top, kept as you move around.
Your airline, home airport and partners
Tell the app which airline you work for, and pages lead with it: its markets, its rivals, its hubs.
Times on the clock you choose
Read every time in each airport's local time, in UTC, or in your own time zone.
Saved views, notes and bookmarks
Save a page as you set it up, keep notes on flights and markets, and keep separate work apart in workspaces.
Long work shows its progress
Reading a file, comparing files and large exports show each step as they go, with a Stop button.
Plain words, with the standard's names
Every data element keeps its name from the standard, with a plain-language line underneath.
Said plainly
What a schedule can't tell you.
- Profitability
- A schedule holds no costs or revenue, so there is no profit or yield — use it for the capacity, frequency and network behind those figures.
- Demand and fares
- Seats are what is offered, not what is sold.
- Industry MCT tables
- The app reads what the file states and the rules you save for each airport; it does not carry the published minimum connecting times.
- Bundled schedules
- It holds no schedules of its own — its answers cover the files you give it.
Questions
Before you download.
What is an SSIM file?
SSIM — the Standard Schedules Information Manual — is the IATA standard airlines use to exchange schedules. A file lists every flight leg of a season: who operates it, between which airports, on which days, at what times, on what aircraft. SSIM Toolkit reads it in full.
Does my data leave my computer?
No. Files are read and analysed on your machine, and your schedules are never uploaded.
How does it get its answers?
From the standard's rules, applied to every record. The same file gives the same answer every time, and every figure traces back to the records it came from — ask the same question in the SQL Notebook to check one.
Which platforms does it run on?
macOS (Apple Silicon) and Windows 10 or 11 (64-bit).
What does it cost?
It's free during the Early Access Preview. After that, plans are priced per seat per month, every plan starts with a 30-day free trial, and paying yearly gets one month free.
Open your first schedule in minutes.
Free during the Early Access Preview, on macOS and Windows.