Cave surveying for iPhone, iPad and Mac
Finish your survey before you leave the cave.
Shots from your instrument, plan and profile views drawn as you go, loops adjusted on site. Save your native .speleo project or export to Therion, Survex and CSV. Completely free, without restrictions.
- 100% free
- iOS 17+ · iPadOS · macOS
- DistoX2 · DistoX310 · SAP6
- Caveway · DiscoX
- .speleo · Therion · Survex · CSV
- Offline
Features
Everything you need underground. Nothing more.
Designed for gloves, the cold and one-handed use.
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Shots from your instrument
Three readings from DistoX2, DistoX310, SAP6, Caveway and DiscoX, automatically compared and averaged.
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Live plan and profile
The centreline grows with every shot. Switch views with a tap.
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Close loops in the cave
See and adjust closure error straight away.
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Splays and LRUD sections
The shape of the passage, station by station.
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.speleo, Therion, Survex, CSV
Your complete project in the native .speleo format, or open files ready for other tools.
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No network needed
Survey and save on your device, even without a connection.
Screens
The whole app, in one session.
Your caves at a glance
Length, depth and survey status for every cave, with a centreline preview on each row.
SpeleoX cave catalogue screen: surveyed caves with length, depth and centreline previews.
Watch the centreline take shape
Every shot extends the survey. North, surface map and scale are always within thumb's reach.
SpeleoX plan screen: a plan view of the centreline with north, scale and numbered stations.
The depth profile
Elevations alongside, at the same scale as the plan. Tap a station to view the shot that created it.
SpeleoX profile screen: the cave's depth profile with elevations alongside.
Table and splays
Shots, LRUD and notes in an editable table. Start your export here.
SpeleoX data screen: an editable table of survey shots, LRUD and notes.
About
Built by surveyors, for surveyors.
SpeleoX grew from the experience of a caving group in Central Italy, active along the border between Marche and Abruzzo. It has evolved in the caves of Central Italy, alongside the people who use it in the field.
- Open data
- Your data stays yours
- 100% free
100% free · without restrictions
Every feature. All free.
SpeleoX is completely free. All features, including iCloud sync, are available without restrictions.
Which laser distance meters are supported?
DistoX2, DistoX310, SAP6, Caveway and DiscoX via Bluetooth, with calibration managed in the app. You can also enter shots manually: the centreline is built in the same way.
What if my phone turns off in the cave?
Every shot is saved to disk as soon as it arrives. When you turn your phone back on, your survey is right where you left it, including the selected station.
How are loops adjusted?
Closure error is distributed across the shots in the loop in proportion to their length. The adjustment is reversible: measured values remain visible alongside the corrected ones.
Is there an iPad and Mac version too?
Yes. SpeleoX is also available for iPadOS and macOS. The native .speleo format preserves the complete survey as a SpeleoX project; to work in other programs, you can export .th, .svx or .csv files with splays, LRUD and notes.
Do I need an account?
You do not need a SpeleoX account. Surveys are saved on your device and can sync to your private iCloud storage when iCloud is available. You can manage iCloud access in your system settings.
Is SpeleoX completely free?
SpeleoX is completely free. All features, including iCloud sync, are available without restrictions.