MsgSecret vs Drilling Calculator for Rigs

Turn everyday text into coded messages for puzzles, playful exchanges, and learning about classic ciphers. Choose a method, set a key when needed, and encrypt or decrypt on your device. MsgSecret includes classic ciphers, word transformations, and text encodings such as Base64. These methods do not provide secure encryption and must not be used to protect passwords, personal records, financial information, or other sensitive data. Base64 is encoding, not secrecy. Get started with a fixed interactive sample that shows a message being encoded and decoded back to its original text without spending credits. Use separate encrypt and decrypt input fields to work without overwriting what you entered. Method notes explain how each transform works and its limitations. Share the coded result through the iOS share sheet, or copy and paste it into your messaging app. Optionally share decoding instructions too. Recipients select the same method and paste only the coded message into MsgSecret. When a method needs a key, share it separately; keys are not automatically included in shared messages. Free access includes 3 successful encrypt or decrypt operations each day. This allowance resets at midnight UTC and does not accumulate. After using your daily allowance, each successful operation uses 1 saved credit. A completed optional rewarded ad adds 5 credits. A one-time in-app purchase provides unlimited transformations without rewarded ads. Previously purchased unlimited access can be restored. Features Classic ciphers, word puzzles, and text encodings in one place Fixed interactive sample with an encrypt-and-decrypt round trip Separate encrypt and decrypt input fields Native sharing, optional recipient instructions, and clipboard tools Method explanations with clear security limitations Exact key adjustment and accessible controls 3 free successful transformations per day Optional rewarded ads for 5 saved credits One-time unlimited access and Restore Purchases 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/