Flight Computer & Calculator vs queri

Pilot Toolkit — fast, accurate flight planning on iPhone and iPad Pilot Toolkit brings your core preflight calculations into one clean, lightweight app. Whether you’re prepping a VFR hop or an IFR cross-country, it helps you compute the numbers that matter quickly and clearly. What you can do • Wind Component: headwind and crosswind, with optional gust handling • Density Altitude: from altimeter or pressure altitude and OAT, plus ISA temperature • Cloud Base: LCL estimate from temperature, dewpoint, and station altitude • Speed of Sound and Mach: speed of sound by altitude/ISA; Mach from speed • TAS / IAS: convert between true and indicated airspeed using air density • Time Addition & Subtraction: add or subtract any number of H:M:S rows with live normalization • NavLog (VFR and IFR): spreadsheet-style leg planner with – true course, altitude, IAS/TAS, winds, variation/deviation – wind correction angle; true, magnetic, and compass headings – ground speed, enroute time, fuel flow, fuel used, fuel remaining – mode toggle with “Calculate TAS using IAS” – dynamic legs: add, remove, reorder – totals row: distance, time, fuel used, fuel remaining – export as PDF; import/export as standard text/CSV files Designed for pilots • Instant results as you type • Aviation units by default (kt, NM, ft, GPH) • Print and share: generate a PDF that mirrors the on-screen NavLog layout • Portable plans: save or open plain text/CSV NavLogs for continued planning • Localizable: English included; ready to add more languages Why pilots like it • Everything essential in one place • Clear outputs with sensible rounding and conventions • Flexible enough for quick checks or full leg-by-leg planning Notes Pilot Toolkit is intended for planning and training support. Always cross-check with official sources, your aircraft POH/AFM, and current weather and navigation data. Use sound aeronautical decision making at all times. Plan smarter and turn preflight math into a few quick taps. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Type SQL. Run it. See real rows. queri is a SQL course where every single lesson ends with a query you write yourself and run against a real database sitting on your phone. No signup. No internet needed. No copying answers off a video. WHY THIS IS DIFFERENT Most SQL apps ask you to pick A, B, C or D. You can pass a multiple-choice test on JOINs and still freeze the first time you face a real table. queri never asks you to recognise SQL — it asks you to write it, then runs what you wrote and checks the rows that came back. HOW A LESSON WORKS 1. A short, plain-English explanation of one idea. No walls of theory. 2. A real task on a real dataset: "list every customer in New York". 3. You type the query. You run it. You see the actual rows. 4. queri compares your result to the correct one and tells you what is off. 5. Stuck? A hint that points at your specific mistake, not a generic nudge. WHAT YOU WILL LEARN - SELECT: pull columns out of a table - WHERE: filter with AND, OR, BETWEEN, IN, LIKE and NULL - ORDER BY and LIMIT: sort and slice - COUNT, SUM, AVG, MIN, MAX: aggregate a column - GROUP BY: aggregate per group - JOIN: combine tables, including three-table joins - A capstone: revenue per customer, written from scratch THE DATASET IS REAL You work against a small online-shop database: customers, products, orders and order items, with real rows, real nulls and real messiness. Not three toy rows. The schema is one tap away while you write. WORKS ANYWHERE Everything runs on your device with SQLite. On the metro, on a plane, on a dead connection. Nothing is uploaded. There is no account to create. BUILT FOR A PHONE A SQL key row with the characters you actually need. Results in a table you can scroll sideways. Progress and streak saved locally. FOUR LANGUAGES English, French, Arabic with full right-to-left support, and Spanish. FREE AND PRO The first module and the first eight lessons are free. That is enough to know whether this works for you. queri Pro unlocks the full curriculum. SQL is the one technical skill that outlasts every framework. Learn it by writing it.