Stackis RPN vs LudyRec

This is an RPN calculator in the style of, for instance, old HP models. It will feel familiar if you are used to RPN, otherwise it will probably be a little confusing at first. It's not programmable and it doesn't try to mimic older hardware; it's just meant to be a pleasant calculator for those who prefer to use RPN. Also, if you want to perform calculations in duodecimal (dozenal), this app is for you!

Your iPhone mic is better than you think. Software's been holding it back. LudyRec is the audiophile-grade recorder that unlocks your iPhone's true audio potential. While every other recording app applies aggressive compression, noise reduction, and gain control that destroys your audio — LudyRec gives you Pure Mode: raw, unprocessed signal capture that professionals demand. PURE MODE — RAW SIGNAL RECORDING • Bypasses iOS automatic gain control (AGC), noise reduction, and high-pass filter • Captures the true, uncompressed signal from your iPhone microphone • Perfect for field recording, music capture, and any situation where audio fidelity matters LOSSLESS RECORDING FORMATS • WAV (PCM) — Uncompressed, studio-standard • ALAC — Apple Lossless, perfect for Apple ecosystem • FLAC — Open-source lossless compression (coming v1.1) • AAC/M4A — High-quality compressed for everyday use • Up to 24-bit / 96 kHz sample rate • Mono & Stereo recording PROFESSIONAL REAL-TIME METERING • Peak hold meter with L/R channels and dBFS values • RMS (loudness) display for accurate level monitoring • Clipping indicator with timestamp counter — never miss an overload • Real-time recording parameters display • Duration and live file size tracking EXPORT TO EVERYWHERE • iOS Share Sheet, Files App, AirDrop • Direct NAS/SMB export — send recordings straight to your network storage • Format conversion on export (WAV to FLAC, ALAC, AAC) ONE-TAP RECORDING • Action Button support (iPhone 15 Pro+) — record instantly • Control Center Widget — start recording without opening the app • Lock Screen Widget — always accessible • Dynamic Island with Live Activity — monitor while multitasking • Launch-to-record in under 3 seconds DESIGNED FOR iOS 26 • Beautiful Liquid Glass dark-mode interface designed for recording environments • Modern, professional UI that puts dated competitors to shame FREE vs PRO Free: AAC recording at 44.1 kHz / 16-bit, basic waveform, Share Sheet and AirDrop export Pro (one-time purchase): Pure Mode, WAV/ALAC/FLAC, 24-bit/96 kHz, professional metering, NAS/SMB export, recording presets, headphone monitoring Buy once, own forever. No subscriptions. No ads. PERFECT FOR • Field recording — nature, urban ambience, live performances • Musicians — practice sessions, vocal ideas, rehearsals without AGC crushing dynamics • Podcasters and journalists — reliable WAV recording with WiFi transfer • Audio enthusiasts — anyone who cares about recording quality Privacy Policy: https://ludy.app/privacy Terms of Use: https://ludy.app/terms