SPL Meter vs Note Calculator Plus

Turn your iPhone into a precise SPL meter, noise meter, and dB meter. Get instant readings, monitor in real time, and visualize sound with a pro-grade toolkit designed for everyday noise checks and audio work. Features Accurate Noise Level Detection Instantly measure decibels (dB) in any environment. Live Audio Monitoring Real-time noise level meter with smooth, stable updates. Professional Calibration Calibrate to match certified sound meters or reference tones. Light & Dark Modes Pick the interface that fits your space. Detailed Noise History See min / max / average and trends over time. Advanced Spectrogram View Visualize frequencies and intensity—great as a simple voice meter and audio analyzer. Noise Exposure Tracking Auto-track exposure to help you stay within safe hearing limits. Perfect for musicians, audio techs, educators, and anyone needing a reliable noise level meter to measure decibels quickly. Upgrade to Pro Unlock unlimited noise history, advanced spectrogram view, full noise exposure tracking, and pro calibration tools. Plans Available: Weekly Plan – Full features, billed weekly Monthly Plan – Best value for regular use Annual Plan – Save more with a yearly subscription Cancel anytime in your iOS settings. Note: For best accuracy, calibrate in-app and consider an external microphone. Results are for reference; not for legal or compliance use. Privacy policy : https://sites.google.com/view/dbmeterprvplcy/home Term of use : https://sites.google.com/view/dbmetertermofuse/home

Note Calculator Plus is the fastest, most beautiful way to count physical cash on iPhone and iPad. Whether you run a shop, drive a taxi, count your till at the end of a shift, or simply balance your wallet, enter the number of notes and coins you have, and Note Calculator Plus calculates your grand total instantly in your chosen currency. Designed with the polish of Apple Calculator and the simplicity of Apple Wallet, every screen feels native to iOS. No sign-up. No account. Fully offline. Your data never leaves your device. FEATURES Live Auto Totals Enter quantities with a stepper or the number pad. Notes total, coins total, grand total, and per-denomination subtotals update instantly. No Calculate button required. 45+ Currencies Supports USD, EUR, GBP, INR, JPY, CNY, AUD, CAD, SGD, MYR, THB, IDR, PHP, VND, PKR, BDT, NPR, LKR, SAR, AED, QAR, KWD, OMR, BHD, ZAR, NGN, KES, EGP, BRL, ARS, MXN, RUB, TRY, CHF, NOK, SEK, DKK, PLN, UAH, RON, CZK and all Eurozone countries. Search, Favorites and Recents Quickly find any currency, save favorites, and access recently used currencies. Undo and Redo Correct mistakes instantly. Long press the plus or minus buttons to adjust quantities by ten. Notes and Coins Chart View a visual breakdown of notes versus coins with a built-in chart. PDF Reports Export professional A4 PDF reports containing denomination details, subtotals and the grand total. Share using Mail, AirDrop, Files or Print. Export as PNG or JPEG Generate a receipt-style image and share it through WhatsApp, Messages, Mail or Photos. History Save every cash count locally with date, customer, reference number and location. Search, edit or duplicate previous records. Additional Details Add customer name, reference number, location and remarks for better record keeping. Smart Keyboard A custom accessory bar always shows which denomination you are editing together with its running subtotal. Copy Grand Total Copy the total with one tap and paste it into any accounting or finance app. Universal Design Optimized for all iPhone and iPad models with support for Dark Mode, Dynamic Type, VoiceOver and haptic feedback. Fully Offline No servers. No accounts. No cloud storage. Your cash count remains on your device. WHO IT'S FOR Retail cashiers Shop owners Taxi and rideshare drivers Currency exchange businesses Restaurant managers Anyone handling physical cash