Frequently Asked Questions

Go to zilom.pt. Two options:

• By email — type your address, get a magic link in your inbox in <60 seconds. Click it and you're in.
• By Google — click "Continue with Google". If your Chrome or Safari is already logged into your Google account, you're in within seconds.

No password. This is deliberate: one less place to get hacked, one less word to forget.

No. Once you sign in on a device, you stay authenticated for weeks (≈1 month of inactivity until the session expires). You'll only be asked to sign in again if you log out, switch browser/device, or the session expires.

In private mode, the browser clears session and cookies when you close the window. So every time you open it in private, it'll ask you to sign in again. It's like any other app — not specific to Z·ilom.

Recommendation: for regular use, add zilom.pt to your phone's home screen (Safari/Chrome → Share → Add to Home Screen). It behaves like an app, session persists.

Yes. The system recognises the same email across both providers and uses the same account. Your analyses and archive follow.

Three:

• Tools — everyday utilities for anyone working with property, and the only mode that depends on no plan at all. Commission calculator, land registry coordinates to Google Maps, unit converter, capital gains on a sale and a mortgage simulator, among others. Free for everyone, always — on any plan, spending no credits and no quota.
• Land Valuation — residual method for agents and appraisers. Calculates how much a plot is worth knowing what can be built and the market price.
• Investment Analysis — financial feasibility of an opportunity. Calculates RCI, developer's margin, sensitivity. For land to develop and buildings to refurbish.

The Tools are free forever. During beta you also have Land Valuation and Investment Analysis without restriction, whatever your profile.

They are, and they stay that way. They depend on no plan, spend no credits and have no usage limit — not now, and not after 15 September. They live at zilom.pt/ferramentas-en and in the app's mode selector, next to Land Valuation and Investment Analysis.

What you pay for on Z·ilom is what you keep, present and decide with — the archive, the report, the calculation breakdown. Converting a coordinate or working out a commission is none of those, and charging for it would make no sense.

Yes. Responsive web app — works on any browser, any device. Can be added to the home screen (iOS/Android) like a native app.

Yes. Start an analysis on your phone (while visiting a plot), continue on the computer later with more detail. Everything saved server-side, accessible on any device where you sign in with the same account.

Yes. The "Archive" holds all your analyses and reports. Reopen and you have a 24h window to adjust assumptions without generating a new output (in the paid version, from v1.0).

We're in closed beta. The watermark ensures the output generated during this phase doesn't circulate as a paid final product. In v1.0 (paid plans), PDFs come out without that mark.

Technically yes — the content is valid. But the watermark is visible and indicates this is a test version. Recommendation: for formal client presentation, wait for v1.0. For internal use or to show the team, beta works fine.

During beta, no. PDFs come out with generic Z·ilom identification. In v1.0, all paid plans allow personal branding (logo, license number, tax ID, contacts) without watermark.

There's a planned model, but the final amounts are still being defined based on feedback from early users. The likely structure has five tiers:

• Free — €0, forever. One mode of your choice (Land Valuation or Investment), with the full calculation and the headline result. One credit costs €9.99 and is worth one report (Land Valuation) or one analysis (Investment), which is saved to your archive.
• Agent — €19.99/month. Land Valuation mode, archive up to 50, 3 reports and 3 revisions per month, your own branding and sync.
• Investor — €19.99/month. The same in Investment Analysis mode, with complementary analysis and financing.
• Dual — €32.99/month. Both modes, with 5 reports and 5 revisions per month in each and an archive of up to 50 per mode.
• Developer — €69.99/month. Investor plus the Advanced Financial Analysis: cash flows across the project, risk by phase, scenario simulation and development financing.
• Total — €82.99/month. Everything.
• Team — a tiered discount on any plan: −10% from 2 to 5 users, −20% from 6 up.
• Tools — €0, for everyone, on any plan. Commission calculator, land registry coordinates to Google Maps, unit converter, capital gains and a mortgage simulator, among others. They spend no credits and no quota. See the Tools.

If you want to share your view on what would make sense to pay for each plan, or which features would be worth what, just reply to the welcome email — that's exactly the kind of feedback that will calibrate the final pricing.

Yes. Past trainees from our courses get a 25% lifetime discount on any paid plan. Applied automatically when you subscribe with the email you used at training.

Yes. No lock-in. Pro-rata refund of the time and reports not used in the current billing cycle. After cancelling, you keep the archive in read-only mode for 30 days so you can download whatever you need.

Valuation: residual method. Sale value minus construction costs, IMT, VAT, technical fees, developer's margin → the residue is the land value.

Investment: static feasibility analysis (RCI, margin) with sensitivity to sale price. The Advanced Financial Analysis — cash flows discounted across the project, a risk rate per phase and scenario simulation — is available on the Developer and Total plans, or one-off at €32.99.

The 6% VAT on housing construction and refurbishment was reintroduced by Decree-Law no. 97/2026, of 20 May. The app automatically applies the price threshold (€660,982 per unit, aligned with the 2nd IMT HPP bracket for 2026), but there are additional legal requirements that the app does not verify and which are left to the user's judgment:

• Time window: the construction licensing request must have been submitted between 25/09/2025 and 31/12/2029 (procedural initiation).
• VAT chargeability: invoices must have VAT chargeable until 31/12/2032.
• End-use: the property must be destined for primary and permanent residence of the buyer (affectation as HPP within 24 months after the use license, maintained for at least 12 months — otherwise IMT is increased by 10 pp), OR for moderate rental (rent ≤ €2,300/month in 2026, placed within 24 months, maintained for 36 months within the first 5 years).
• Type of operation: must be a construction or refurbishment contract — not the sale of a finished property.

If any of these requirements is not met, the applicable VAT is 23%. The app assumes the user validates these points in the real context of the project.

Yes, 2026 tables (HPP / HPS for Primary and Secondary Habitation). IMT tiered, calculated per property.

We estimate 1 to 2 months maximum. The goal is to launch v1.0 publicly as soon as we have confidence in the main flows and integrated payment.

• "BETA VERSION" watermark disappears (replaced by "FREE VERSION" only on Free-plan PDFs)
• Paid plans open (Agent, Investor, Dual, Developer, Total, with a team discount from 2 users)
• Monthly quotas come into effect (Free becomes limited to X branded PDFs/month and archive)
• Personal branding available on paid plans
• Founders and Past Trainees keep the lifetime discount promised

We'll notify you well in advance of any change that affects beta users.

Yes. Current roadmap:

• Available now: both modes (Estimate and Investment), the Advanced Financial Analysis and the Letting module (gross and net yield, NOI, property tax, service charges).
• September 2026: public launch of the paid plans, with payments and certified invoicing.
• End of 2026: rural land valuation by the income method, with a crop database; in-app team management (invitations, joiners and leavers).
• 2027: warehouse/industrial and hotel modules.

Reply to the welcome email or write to info@zilom.pt. Every message reaches me; I reply to all (especially during beta).

• Email (for authentication)
• Name (if you fill in your profile)
• Analyses and reports you create
• Basic usage events (when you generate a PDF, etc.) to understand aggregate patterns

We don't sell data to third parties. No advertising tracking. Full policy at zilom.pt/privacidade.

Yes. Write to info@zilom.pt and I'll delete all your data within 24h.

You don’t need one: Z·ilom installs straight from the browser on iPhone, Android and desktop, with no app store — it sits on your home screen with its own icon, full screen, same account and same analyses. Step-by-step instructions per system at zilom.pt/install. A store app may come later depending on demand.