Borderly From first location to
verified report.
Four steps separate you from court-ready tax residency documentation. Borderly handles the complexity — you just carry your phone.
Everything happens automatically
From passive tracking to verified reports, each step builds on the last to create an unbroken chain of evidence.
Download & Start Tracking
Install Borderly from the App Store and tracking starts immediately. Your iPhone records your jurisdiction automatically every day — no manual input required.
- GPS records your jurisdiction automatically every day
- No manual input needed — runs in the background
- Battery-efficient background operation
- Tracks your location even when offline
Capture Supporting Evidence
Photograph boarding passes, hotel receipts, lease agreements, and any supporting documents. Everything is stored in your encrypted evidence vault, linked to dates and jurisdictions.
- Photograph boarding passes, hotel receipts, lease agreements
- Documents stored in your encrypted evidence vault
- Each piece of evidence linked to dates and jurisdictions
- Supports photos, PDFs, and scanned documents
Share With Your Attorney
Invite your tax attorney with a single link. Set granular permissions and jurisdiction-level restrictions — every access is logged in an audit trail.
- Invite your tax attorney with a single link
- Set granular permissions: view-only, report access, or full admin
- Jurisdiction-level restrictions — share only what's relevant
- Every access logged in an audit trail
- Firm-level management for multi-attorney practices
Generate Verified Reports
Produce a PDF with your complete presence summary. Hash chain verification and trusted timestamps prove exactly when each record was created.
- PDF with complete presence summary
- Hash chain verification embedded in the report
- Trusted timestamps prove record creation dates (paid tiers)
- Court-ready format accepted by tax authorities
What happens behind the scenes
You don't need to understand the cryptography — but here's a plain-language look at the three layers of proof that protect your records.
Hash Chain
Every presence record you create is cryptographically linked to the one before it. If anyone changes even a single character in any past record, the entire chain breaks — making tampering mathematically detectable.
Trusted Timestamps
DigiCert — a globally trusted certificate authority — signs each record with a precise timestamp. This proves when a record was created, independent of Borderly's servers. Available on select tiers.
Blockchain Anchoring
A cryptographic summary of your records is written to the blockchain. This creates a permanent, public, and immutable checkpoint that anyone can verify — without revealing your private data. Available on select tiers.
Think of it like a notarized logbook
Each page references the last, a trusted notary stamps every entry, and an encrypted record of each page's creation is logged. Anyone you share with can verify the book hasn't been tampered with or spoofed. Giving you and your trusted professional complete peace of mind.
Frequently asked questions
How accurate is the GPS tracking?
Borderly is designed for jurisdiction-level tracking — it reliably determines which state, province, or country you're in each day. You don't need meter-level precision for tax residency purposes.
Does tracking drain my battery?
No. Borderly is designed to be battery-efficient. You shouldn't notice any meaningful impact on your battery life compared to normal phone usage.
What if I forget my phone at home?
You can add manual entries for any date. However, automated recordings are preferred because they carry stronger cryptographic proof — manual entries won't have the same level of verification.
Can I track past days retroactively?
Yes, you can add manual entries for past dates at any time. Keep in mind that retroactive entries won't include cryptographic timestamps, since those are generated at the moment of recording. Automated daily tracking gives you the strongest evidentiary foundation.
How long does report generation take?
Typically under 60 seconds for a full year of records. Your presence data, evidence references, and cryptographic chain are compiled into a signed PDF — ready to share with your attorney or tax authority.
Is there a free trial?
Yes — every new account starts with a 60-day free trial with full access to all features. No credit card required to get started.
Get started in
under a minute.
Download the app, and start tracking now. No credit card needed.
No credit card required for trial. Available on iPhone and web.