For structural & civil engineers
Engineers Digital Hub is a genuinely comprehensive engineering toolkit built exclusively for Apple platforms: a family of offline apps built for real engineering days. The full hub for Mac, EDH Pocket for iPhone and iPad, CPD for Construction Engineers, the free app that logs your CPD by itself, and Seen on Site for site inspection reports and QR labels, coming soon. Calculators, references, AI prompts and project records, working alongside your design software.
100% offline tools · your data stays on your device · no account required
The EDH family
Built natively for Mac, iPhone and iPad, around one idea: the tools, references and records an engineer reaches for all day, kept fast, offline and on your own device.
Mac · Out now
The full hub for your desk. Every calculator, reference and record in one offline app that works alongside your design software.
£9.99 / month , was £19.99
or £99.99 / year. 14-day free trial. Launch pricing.
iPhone & iPad · Out now
The hub in your pocket. The same 54 calculators as the desktop, plus a frame solver, IFC viewer and an on-device AI assistant built for site.
£4.99 / month , was £9.99
or £49.99 / year. 14-day free trial. Launch pricing.
iPhone & iPad · Out now
CPD that logs itself. A structured course on the future of construction, with automatic hour tracking and evidence-grade certificates.
Free
Every feature included. No subscriptions, no catches.
iPhone, iPad & Mac · Coming soon
Inspection reports and QR labels for the site visit. Log observations where you find them, attach photographs and measurements, label anything that needs a return visit, and issue a signed report before you leave.
Free to download
14 days of full use free, then Full Access from £2.99 / month, £19.99 / year, or £49.99 once. Records you have made stay readable whatever you choose.
Which app do I need
The EDH apps cover engineering tools and professional development. Seen on Site has its own identity and a focused job: construction records, inspection reports and QR labels. Choose the app that fits your work.
| App | For | Runs on | Requires | Price | What it does |
|---|---|---|---|---|---|
| Engineers Digital HubOut now |
Design engineers and techniciansthe person doing and checking the calcs | Mac | macOS 14 Sonoma | £9.99 / monthor £99.99 / year · 14 days free | 54 Eurocode calculators with full working, 3D frame FEA, IFC viewer, PDF mark-up and compare, OCR on images, 200+ AI prompts, knowledge base, ISO 19650 project store, your-brand-first calc sheets |
| EDH PocketOut now |
Site and design engineersthe same people, away from the desk | iPhone & iPad | iOS 26 | £4.99 / monthor £49.99 / year · 14 days free | The same 54 calculators as the desktop, frame solver, IFC viewer, 2,000+ steel sections, 287 knowledge notes, on-device AI assistant, field notebook, CPD log |
| Seen on SiteComing soon |
Site engineers, clerks of works and building surveyorsanyone who inspects and writes it up | iPhone, iPad & Macone plan covers all three | iOS 26 · macOS 26 | £2.99 / monthor £19.99 / year, or £49.99 once · 14 days free | Inspection reports in 19 types, signed and revisioned as PDF with an editable Word copy, QR labels that carry the record, site visits, observations located to grid and element, photographs, measurements, voice notes, sketches, actions against a name and a date, handover pack |
| CPD for Construction EngineersOut now |
Graduates and chartered membersCPD record keeping | iPhone & iPad | iOS 26 | Freeevery feature, no in-app purchases | 14 chapter course on the future of construction, 280 quiz questions, CPD hours logged automatically as you read, quiz and take notes, A4 certificate export, glossary and a 40 material reference |
All four are free to download and work offline, keep your data on the device, and never ask you to make an account. The prices above are what they cost to keep using: the desktop hub, Pocket and Seen on Site each give you 14 days free first, and Seen on Site can be bought outright instead of subscribed to. CPD for Construction Engineers is free with nothing held back and no in-app purchases at all.
The desktop hub · Out now for Mac
Hundreds of ready-to-use prompts for everyday engineering tasks. Copy, tweak and paste into your AI of choice.
54 structural design checks for fast sense-checks, with full working and a clear pass / fail.
Standards, methods and worked precedent, searchable and at your fingertips.
Steel, timber and concrete section data, materials and a glossary: the numbers you look up all day, built in.
Open and review IFC models for a quick look, with no heavyweight BIM suite needed.
Redline drawings and spot the revisions between two issues, side by side.
Capture site photos and pull text straight off a photograph of a drawing.
To-dos, notes, registers and project records that keep the day's admin in one place.
No cloud and no account, so your projects stay confidential on your device.
Put your practice's logo and accent colour on the app and every calc sheet.
How it works
No setup, no account, no learning curve. Install it and it is ready.
The hub from the Mac App Store. Pocket and CPD from the App Store on iPhone and iPad.
Run a calc, look up a section, mark up a drawing, or grab a prompt for your AI.
Everything runs and saves on your device. Nothing leaves your machine.
Prompt assistant
Engineers Digital Hub is a prompt assistant. It comes loaded with a growing library of carefully written prompts for everyday engineering work: drafting a method statement, sanity-checking an approach, explaining a clause, writing up an inspection. Copy one, paste it into your AI of choice, and get a proper head start. Your AI does the talking, EDH gives you the right thing to say.
You are a senior structural engineer. I'm checking a 6 m simply supported steel beam under a 25 kN/m UDL. Walk me through the Eurocode checks (bending, shear, deflection and lateral torsional buckling) and flag anything I might be overlooking.
Calculations
Every check shows its full working, the clauses it draws on, and a plain pass / fail verdict, then exports to a branded calc sheet ready for the file.
Reference at your fingertips
Steel, timber and concrete section properties, a materials library and a glossary, searchable and offline, so you're not digging through PDFs or the blue book mid-calc.
Drawings & documents
Redline a drawing with clouds, arrows, notes and stamps, then compare two revisions side by side to see exactly what changed, and OCR a scan when you need the text back.
Explore the desktop hub
The hub layer
Beyond the headline tools, EDH keeps the admin, records and reference that surround every project, all offline and all in one place.
Tasks and reminders
Quick and project notes
Your project address book
Group work by project
Hand work over cleanly
A log of every job
Risk, change & design registers
Consistent, standard names
H&S files and records
Log CPD, keep training to hand
250+ curated engineering links
Pin what you use most
Search across your own notes
Site photos, organised
EDH Pocket · iPhone & iPad
EDH Pocket carries the same tool engine as the desktop hub, rebuilt for site. Run a design check at the kerb, open the model in the cabin, and let your CPD log itself on the train home.
Works offline apart from the news feed. AI features run on-device and need an iPhone or iPad with Apple Intelligence.
Seen on Site · iPhone, iPad & Mac
Coming soonSeen on Site: Construction is a dedicated app for site observations, inspection reports and QR labels. Capture the evidence, give each action an owner and a due date, and bring the visit together in a report. Built for iPhone, iPad and Mac.
Works entirely offline, with no account and no server of ours. iCloud sync is optional and off until you turn it on, and when it is on your records travel between your own iPhone, iPad and Mac. Photographs and other files stay on the device that captured them, so those move as a report or a handover pack.
A dedicated place for construction records, from the first observation to the issued report.
Explore Seen on SiteCPD for Construction Engineers · iPhone & iPad
100% free, every featureCPD for Construction Engineers turns spare minutes into evidence. Read a short section on the future of construction, check yourself with a quiz, and the hours record themselves. When review season lands, export the certificate and you're done.
Works offline apart from the news feed. AI features run on-device and need an iPhone or iPad with Apple Intelligence.
AI prompt assistance · Engineers Digital Hub for Mac
Spend less time building AI instructions from scratch. Start with an engineering task, choose a prepared prompt and add your project context. A searchable prompt library, note-based prompts and calculation sense-checks help you get your brief ready for the AI you use.
Your prompt-writing head start
214Task-specific starting points for design, checking, reports, site work, client communication and more.
Find the right starting point for the job in front of you.
Filter the library by the level of engineering responsibility.
Included in the Mac app. Search, filter and copy, with space to save your own prompts too.
Prompt library
Choose a task-specific template and copy it into your AI. Add the project details there, so each brief starts with a useful structure.
Ask my notes
Build a prompt from your question and relevant passages in your saved notes. Carry the source material into the conversation.
Calculation sense-check
Generate a checking prompt from the calculation inputs and results already on screen. Keep the working with the question.
Copy your prompt into ChatGPT, Claude, Copilot or Gemini, add the remaining context and review the response with your engineering judgement.
Free CPD for everyone. Pocket and desktop each come with a 14-day free trial, billed per user through the App Store, cancel anytime. Seen on Site is free to download with 14 days of full use, then a subscription or a one-off purchase.
Out now on the Mac App Store. 14-day free trial with every tool unlocked. Lock in the launch rate before it rises on 1 October 2026.
14-day free trial. Lock in the launch rate before it rises on 1 October 2026.
Preparing for release. Free to download, with 14 days of full use. Records you have already made stay readable and exportable whether or not you subscribe.
No subscriptions, no unlocks, no ads. CPD for the whole team, at no cost.
Introductory launch pricing until 1 October 2026. From then, the desktop hub rises to £19.99 / month and £149.99 / year, and EDH Pocket rises to £9.99 / month and £79.99 / year for new subscribers. Subscribe before then and you keep the launch rate for as long as you stay subscribed.
Get in at the launch price.
We'll remind you before launch pricing ends on 1 October 2026, and let you know when big updates land. No spam.
Questions
Yes. Every tool, calculator, reference and record works with no internet connection and no account, and your work is saved locally on your device. A connection is used only for the optional industry news feeds in EDH Pocket and CPD for Construction Engineers, iCloud sync in EDH Pocket and Seen on Site, the Apple Maps tiles on Seen on Site's map screen, and App Store purchases.
CPD for Construction Engineers is completely free. EDH Pocket is £4.99 per user / month or £49.99 per user / year after a 14-day free trial, rising to £9.99 / month and £79.99 / year for new subscribers when launch pricing ends on 1 October 2026. The desktop hub is £9.99 per user / month or £99.99 per user / year after a 14-day trial, rising to £19.99 / month and £149.99 / year on the same date. Seen on Site is free to download and can be used in full for 14 days, then Full Access is £2.99 / month or £19.99 / year, each with a 14-day free trial, or £49.99 bought outright, and records you have already made stay readable and exportable whether or not you subscribe. Subscribe at the launch price and you keep it for as long as you stay subscribed. Everything is billed and cancellable through the App Store.
The EDH family is built natively and exclusively for Apple platforms, and we've built it to be as complete a toolkit as you'll find there. The desktop hub is out now for macOS on the Mac App Store, and EDH Pocket and CPD for Construction Engineers are on the App Store for iPhone and iPad. Going deep on one platform is what lets everything run fast, offline and on-device, with AI powered by Apple Intelligence.
Yes, genuinely. Every chapter, quiz, certificate and AI tool is included, with no subscriptions, no unlock purchases and no ads. It's our way of giving something useful to the profession.
They're deliberately independent, because neither app uses an account or a server of ours. Pocket runs the same tool engine as the desktop, so your checks behave identically, and project records can be moved between devices with a simple one-file export and import.
Your work stays on your own devices, and in your own iCloud where an app syncs. We don't run servers and we don't collect your project data. EDH Pocket syncs your records between your own devices through your iCloud whenever you are signed in to iCloud, and Seen on Site does the same only once you switch its sync on. We cannot read either. The AI features in the iPhone and iPad apps run on-device with Apple Intelligence, so nothing is sent to us or anyone else.
Every check shows its full working and the clauses it draws on, so it can be independently reviewed and signed off. The calculators follow recognised structural design codes, including the Eurocodes with UK National Annex values.
Yes, on the desktop hub: add your practice's logo and accent colour, and it appears across the app and on every calc sheet you export.
Free CPD for everyone. The hub for desk and site, with 14-day free trials.
