LocalToolbox vs Unit Converter · Baro

Local Toolbox is a privacy-first, fully offline utility app that now includes 203 practical tools for daily life, work, local records, study, image tasks, PDF and media handling, and professional use. It brings measurement tools, timers, date and unit converters, text utilities, developer tools, finance and record tools, field and workplace helpers, image tools, PDF and file tools, media tools, and fun utilities into one app. Many small tools that would normally require a separate download, or an upload to a cloud website, are already here and run entirely on device. Everything runs locally on your device. No login, no internet required, no cloud sync, no content upload, and no ads, subscriptions, or in-app purchases getting in the way. Text from image, document scanning and auto redaction are all done on device by iOS itself, so your photos, PDFs and videos never need to be handed to an AI service. It is built for people who want practical tools without privacy trade-offs. V2.3 adds ten local tools: Resize to Target (exact pixels or file size), Convert Image Format (JPEG/PNG/HEIC), Document Scanner (auto edge detection and shadow cleanup), Text from Image (offline OCR with txt export), QR & Barcode Scan (and Wi-Fi QR creation), Auto Redact (card numbers, IBANs, emails, phone numbers, IPs and faces), Images to PDF, PDF Page Tools (merge, split, rotate, delete, export pages), File Hash Check (SHA-256/SHA-1/MD5/CRC32) and Compress Video (size limit, trim, extract audio). Key features include: Measurement, timer, date, and unit conversion tools Text utilities, JSON, regex, UUID/ULID, JWT, URL parsing, Text Find and Replace, and Voice to Text Everyday helpers like bill split, unit price compare, work hours, time zone conversion, a general Date Calculator, and Exam Countdown Finance and record tools such as compound growth, fixed deposit, recurring investment, goal planning, mortgage comparison, Simple Ledger, savings records, gift records, and local logs for borrowing, inventory, warranty, recurring payments, receipts, and medication Image tools such as compression and resizing to target, format conversion, stitching, color picking, text watermark, EXIF viewing and stripping, screenshot and auto redaction, document scanning, text from image, and QR and barcode tools PDF and file tools such as Images to PDF, PDF merge/split/rotate/delete/page export, and file hash verification Media tools such as video compression and trimming, and M4A audio extraction Privacy tools such as a local authenticator, text redaction, photo metadata stripping, screenshot redaction, link tracking cleanup, and a privacy checkup checklist Professional tools for engineering, workplace, logistics, renovation, and field use Fun tools like Lucky Spinner, coin toss, reaction speed, color guess, a Yes / No Decider, Paid Slacking Tracker, and more Supports Simplified Chinese, Traditional Chinese, English, Japanese, Korean, Spanish, Brazilian Portuguese, German, and French. Have a feature idea or want a new tool? Tell us in an App Store review.

■ 평 · 돈 · 근 · 관 — the Korean units the built-in converters leave out. Unit Converter · Baro opens straight onto them, with the everyday metric, imperial, temperature and shoe-size pairs one tap away. Both rows are live: type into either one and the other follows on every keystroke. No equals key, no convert button, no category menu. Cold start to answer is zero taps — the app comes back exactly as you left it, same pair, same digits, same caret. ------------------------------- ● Why these units are hard ------------------------------- • 1 평 = 400/121 m² and 1 자 = 10/33 m have no exact decimal form. Every factor here is an exact fraction, never a rounded decimal, so 84 → m² → 평 comes back as 84, not 83.99999999999999. • 근 means 600 g for meat and 375 g for vegetables, fruit and herbal medicine. Choosing silently makes the answer 60% wrong, so the toggle stays on screen whenever it can change the result. • Shoe sizes are a lookup table, not a ratio. Values outside it say so instead of inventing a number. • Temperature has its own code path, so ℃ and ℉ are never a plain multiplier. Below absolute zero the app says so rather than clamping your input. ------------------------------- ● On the first screen ------------------------------- • A five-slot chip rail — 평 ↔ m², 돈 ↔ g, 근 ↔ g, mm ↔ US, ℃ ↔ ℉ to begin with. A new pair pins itself to the front; tapping a chip already there never reorders it, so muscle memory keeps working. • Two live rows — tap the other one and the caret moves there. No keyboard swap, no mode. • A ⇅ swap that does not drift — it carries the exact value, not the rounded number on screen, so flipping back and forth never moves your digits. • Its own keypad — sixteen keys, painted with the first frame. The system keyboard never appears and the layout never jumps. 00 is there for 1,000 평 and 10,000 g. • Copy — one key puts the result on the clipboard. The app never reads it back. • 평형 for apartments — enter an area and the familiar 평형 label appears with an 전용 / 공급 toggle. Two separate tables, not an invented ratio. ------------------------------- ● The full catalogue, two taps away ------------------------------- 척관법 first — 평 ↔ m², 돈 ↔ g, 냥 ↔ g, 근 ↔ g, 관 ↔ kg, 자 ↔ cm, 치 ↔ cm, 되 ↔ L, 말 ↔ L, 홉 ↔ mL — then area, weight, length, temperature, volume, shoes and speed. Every row previews the answer for the number you already typed, so you see it before choosing. One tap applies the pair, pins it and closes. The list is curated, not exhaustive: a few dozen pairs people actually reach for, instead of a search field. And the info sheet prints every factor in plain text — 1 돈 = 3.75 g, 1 관 = 3.75 kg, 1 평 = 400/121 m², 1 자 = 10/33 m, 1 되 = 1.8039 L, both 근 values, the Mondopoint shoe anchors — so you can check the arithmetic yourself, offline. ------------------------------- ● Private by design, built to be tapped ------------------------------- • Zero network code. Nothing leaves this phone, ever — check it in airplane mode. • No system permissions at all, and no permission prompt anywhere. • No account, no login. Privacy label: Data Not Collected. • Zero analytics, zero telemetry, zero third-party SDKs. No ads, no subscriptions, no in-app purchases. • Every control is at least 64 × 64 pt, body text 24 pt and up, high contrast on AMOLED-friendly black. • Single taps only — no double-taps, no long-press, no swipes, no hidden gestures. • Six languages: English, 한국어, 日本語, Deutsch, Français, العربية (right-to-left included). Deliberately left out: currency and exchange rates (live rates need a network call), cooking cups and spoons (they depend on the ingredient) and 마지기 (too regionally variable to answer honestly). ------------------------------- ● The Baro promise ------------------------------- Unit Converter is part of Baro — lightweight tools that respect your data, your battery, and your time. "The tools you reach for first."