MsgSecret vs Drilling Calculator for Rigs

MsgSecret helps you keep the meaning of your messages off the network in plain form. You set up your cipher, encrypt on device, and share ciphertext through any app or pasteboard. Service providers and platforms see letters and symbols, not your original words, which reduces what they can infer from the payload alone. MsgSecret is built for encoding and decoding in one place. You choose a classic cipher, run encrypt or decrypt, and copy the result to share or store. Separate fields for plaintext and ciphertext make it easy to work without overwriting your last step. Several methods are available with different complexity; the app explains each one so you can pick what fits your situation. To get started quickly, a tutorial runs the first time you open the app and stays available from the menu. You can revisit cipher details anytime under About ciphers. Each transformation uses a small amount of credits; you can earn more credits when you need them by watching an optional rewarded ad. Features * Hide your message from all message service providers * Encode and decode text with multiple classic cipher methods * Keep encrypt and decrypt buffers separate so you can switch tasks safely * Copy ciphertext and paste into Email, SMS, chat, and social apps, or the reverse for decoding * Built-in tutorial and cipher reference so setup stays straightforward * Optional rewarded videos to earn credits when your balance runs low * Designed for iPhone and iPad with a focused dark interface

DERRICK is a fast, accurate drilling and well-control calculator for the rig floor. Set up your well once and every calculator pre-fills from it, so you only change what is different today. Built for drilling engineers, toolpushers, company men, mud engineers, and students who need the right number under pressure. - Your active well pre-fills every calculation. Less typing, fewer mistakes. - Tap show your work on any result to see the formula with your exact numbers. - Works fully on device. No account, no sign-in, no tracking. - Field or SI units on every input and result. - iPhone and iPad, with a purpose-built two-pane layout on iPad. CALCULATORS - Pressure and gradient: hydrostatic pressure, equivalent mud weight, equivalent circulating density, bottomhole pressure. - Well control: kill mud weight, formation pressure, MAASP, LOT and FIT to EMW, kick tolerance, gas expansion. - Hydraulics: pump output, annular velocity, strokes and lag, bit hydraulics. - Volumes and capacities: pipe and hole capacity, annular capacity, pipe displacement, slug volumes. - Mud and tubulars: weight up with barite, buoyancy factor, trip margin, and more. MUD WEIGHT WINDOW - See pore pressure, mud weight, ECD and fracture across the whole hole. - Tap or drag the chart to read every value and your margins at any depth. KILL SHEET - Enter shut-in pressures and get kill mud weight, ICP, FCP and a step schedule. - Automatic gas influx indication from the casing to drillpipe differential. AI CO-PILOT - Ask questions grounded in your active well and get clear, field-ready answers. - Explain any calculation, interpret a kick, or draft an end of tour handover. - Decision support only. It always defers to written procedure and the on-site supervisor. HISTORY AND EXPORT - Save any result to your well log with a note, then filter and search the log. - See your activity heatmap and export clean reports. Unlimited wells, the full history, export and reports, unlimited AI, and specialist modules like casing design. PRIVACY - Your wells and calculations stay on your device. No analytics, no ads, no tracking. SAFETY - DERRICK assists calculation. It does not replace your company well-control procedures, the well program, or the judgment of the on-site supervisor. Always verify independently before acting. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/