The finance app that can't spy on you.

Logifi tracks your shifts, spending, diary and documents — and stores every byte on your phone, sealed with AES-256. No servers. No account. Nothing to leak, sell, or subpoena.

Get Logifi — Free UK-built · works 100% offline · no account required
logifi — network egress audit (complete)
$ logifi --audit-egress
[user-initiated] drive.google.com   AES-256 ciphertext only
[user-initiated] dicebear.com       avatar seed word only
[first-scan]     jsdelivr.net       OCR engine download
[never]          your income        0 bytes
[never]          your expenses      0 bytes
[never]          your diary         0 bytes
[never]          analytics/ads      no SDK installed
-- end of list. there is no server. --
This is the complete list. Most finance apps can't print theirs.
One app, your whole life

Built for people paid by the hour.

Shift workers, nurses, drivers, freelancers — Logifi is designed around variable income, UK tax rules, and the reality that your pay arrives after a cut-off, not the day you earn it.

💰

Shift & income tracker

One-tap shift templates, multiple jobs, rates locked in at what you actually earned — a pay rise never rewrites your history.

📊

Safe to Spend

Set your payday and cut-off; Logifi models pay-in-arrears correctly and shows the full working behind every figure.

🇬🇧

UK tax engine

HMRC income tax, NI, all 5 student loan plans on current 2026/27 thresholds, pension — and a one-tap Self-Assessment Tax Pack.

🧾

Receipt scanning

On-device AI reads the merchant, total and date. The photo never leaves your phone.

🧠

Smart insights

Spending momentum, your priciest weekday, work-hours vs food-spend — patterns computed privately on your device.

📓

Encrypted diary

A journal no company can read. PIN-locked, biometric unlock, photos encrypted alongside text.

🚗

Vehicle vault

MOT, tax & insurance reminders before they lapse, true monthly cost, cost-per-mile, encrypted documents.

🔐

Password & ID locker

Credentials and identity documents in an AES-256 vault only your PIN can open.

📈

Weekly life report

Every Sunday: earned, spent, streaks — a summary made for you, seen only by you.

Security architecture

Zero-knowledge isn't a slogan here. It's the design.

Everything below is verifiable behaviour, not marketing. Ask us hard questions — we like them.

ENCRYPTIONAES-256-GCM with a fresh random IV per item. Vault documents, passwords, diary entries and identity files are all sealed.
KEY DERIVATIONPBKDF2-SHA256 at 600,000 iterations (OWASP-recommended), per-install random salt. Your PIN is never stored — only a salted hash.
BIOMETRICSFingerprint/face unlock via Android's hardware secure enclave. The key material never leaves the chip.
BACKUPSSealed with AES-256 before they leave the device. Your Google Drive stores ciphertext Google cannot read — and backups restore on a brand-new phone.
TELEMETRYNone. No analytics SDK, no crash reporter, no ad framework. The APK contains nothing that phones home.
SERVERSWe don't operate any. There is no database of users, so there is nothing to breach.
See it

Dark, fast, and yours.

Logifi home screen — 100% offline, showing weekly report of hours logged and money earned, today's tasks and quick actions
Safe-to-Spend intelligence — amount left after bills, savings and goals, plus financial runway in months
Vehicle TCO manager — MOT, tax and insurance dates, true monthly cost, and expense or document logging
Pricing

Free forever. PRO when you're ready.

Free

Everything to run your money

  • Unlimited income & expense tracking
  • Safe to Spend + weekly reports
  • UK tax, NI & student loan engine
  • 30 diary days · 2 projects · 3 credentials
  • Dark & Light themes
PRO — lifetime or annual

Unlimited everything

  • Receipt scanning & CSV bank import
  • Self-Assessment Tax Pack
  • Vehicle vault & identity locker
  • All smart insights, unlocked
  • All premium themes
  • Encrypted Google Drive backup
Fair questions

Ask us the hard ones.

If there's no server, how do you make money?

One optional PRO purchase through Google Play — lifetime or annual. Payment is handled entirely by Google; we never see your card. That's the whole business model: you pay for software, not with your data.

How do I know it's not phoning home?

Check for yourself: Android's network usage screen, or any packet-capture tool, will show you the complete egress list above — and nothing else. There is no analytics SDK in the APK to find.

What happens to my data if the app is abandoned?

Nothing — that's the point of local-first. Your data lives in files on your device, and the export produces a standard JSON backup you always control. There's no server to switch off.

What if I lose my phone?

Restore your encrypted backup (Drive or file) on a new device and enter your PIN. Backups carry their own key material, so they restore anywhere — but without your PIN, they're AES-256 ciphertext to everyone, including us.

Is it really accurate for UK tax?

The engine uses year-keyed HMRC tables — income tax with allowance taper, employee NI, all five student loan plans on current 2026/27 thresholds, and salary-sacrifice pension. Historical payslips compute with the rates that applied that year. It's an estimate for planning, not filing advice.