Offline-first · Android
The toolbox that never phones home.
Scan documents, extract text from PDFs, compress images, lock your notes — every byte is processed and stored on your phone. No cloud. No account. No tracking.
// works in airplane mode — by design, not by accident
What's inside
One vault. Every everyday tool.
Each tool below runs entirely on your device — the line connecting them is the only network this app needs.
Document scanner
camera → PDFPoint, capture, done — multi-page scans become clean PDFs saved straight to your Downloads. The camera feed is processed in memory and never transmitted.
PDF tools + offline OCR
merge · split · reorder · extract textMerge, split, reorder, compress — and pull selectable text out of any PDF or photo with on-device OCR. Most OCR apps upload your documents to do this. This one can't: there's nothing to upload to.
Image tools
compress · resize · convertHit any upload size limit with one tap — smart compression binary-searches quality to land under your target. HEIC, WebP, PNG, JPEG, converted locally in seconds.
Bill Vault
receipt → merchant · date · amountSnap or pick a receipt and it's read on-device — merchant, date, total and GSTIN pulled out automatically, then filed in a private vault you can search and total up. Most expense apps ship your receipts to a server to read them. This one never sends a single byte.
Local share
phone → any browser, same Wi-FiSend a file to any laptop or phone on your network: the app spins up a tiny server on your device, the receiver scans a QR. The file travels across the room — not across the internet.
Voice notes & tasks
speak → searchable textDictate notes and voice tasks with reminders, transcribed as you speak and stored in a local database. Search everything later — your voice stays yours.
QR studio + file manager
generate · scan · organizeGenerate and scan QR codes, and manage every file the vault produces — rename, move, share, or extract text, all from one place.
App lock & Vault Pulse
PIN · biometric · activity constellationA PIN and biometric gate guards the whole vault, with brute-force lockout. Vault Pulse turns your real activity into a living constellation — drawn from local data, like everything else here.
The privacy ledger
Where your data lives. All of it.
Most privacy policies are written to be skimmed. This table is the whole story — verifiable, because the app works with networking turned off.
| Data | Where it's stored | Leaves your device? |
|---|---|---|
| Scanned documents & PDFs | Your phone's Downloads folder | NEVER |
| Photos you compress or convert | Your phone's Pictures folder | NEVER |
| Notes, tasks & transcripts | Local encrypted-device database | NEVER |
| Receipts & extracted bill data | Private app storage — not your photo gallery | NEVER |
| OCR text extraction | Processed in memory, on-device model | NEVER |
| Your PIN | Hashed, in encrypted storage, excluded from backups | NEVER |
| Usage analytics | Not collected — there is nothing to store | N/A |
| Local share transfers | Device-to-device over your own Wi-Fi, only while you run a session | Your network only |
Make it yours
Seven themes. You're wearing one now.
This entire page is painted with the app's real color system — every swatch below restyles the site exactly the way it restyles the app.
UtilityVault Pro
Free forever. Pro is one purchase.
Every core tool is free. A single one-time unlock — no subscription — removes ads, opens the advanced PDF suite, and unlocks Bill Vault's expense tools.