PyGrinder vs CS++ Python IDE

AI checks your Python code like a real FAANG interviewer. 50 tasks, 20-minute timer, detailed review. One purchase. No subscriptions. Practice makes perfect — when you get instant, specific feedback on every solution. PyGrinder simulates the pressure of a real coding interview: strict timer, AI evaluation, and a verdict you can trust. WHY 50 PROBLEMS MATTER: Most interview prep apps give you 10-15 tasks. You memorize them in a weekend and run out. With 50 hand-picked Python problems — Easy to Hard, across every major topic — you build real algorithmic thinking, not muscle memory. WHAT YOU GET: • AI code review — analyzes structure, complexity, and patterns (not just "correct" or "wrong") • 50 Python problems: Easy to Hard, no filler tasks • 20-minute timer — real interview pressure • Daily Challenge — one new task every day • Detailed checklist: AI answers 5 specific questions about your solution • Big O comparison: your complexity vs optimal • Side-by-side code view with reference solution • Actionable fix plan: what to change and why • Filter by difficulty and topic (Arrays, Two Pointers, DP, Stack, Graphs, Heap...) HOW IT WORKS: 1. Pick a problem or take the Daily Challenge 2. Write Python code in the built-in editor 3. Submit under the 20-minute timer 4. Get your verdict: PASS or FAIL with score (1-10) 5. See the exact line with the issue 6. Unlock full review, complexity analysis, and fix plan PERFECT FOR: • Junior Python developers preparing for technical screens • CS students applying to internships • Self-taught programmers who need structured practice • Anyone improving algorithmic thinking TOPICS: Arrays & Hashing, Two Pointers, Sliding Window, Stack, Binary Search, Linked List, Heap, Dynamic Programming, BFS & Graphs, Binary Tree, Design, Math, Bit Manipulation One purchase unlocks everything. No subscriptions. No accounts. Just code, get reviewed, improve. Download PyGrinder and walk into your interview ready.

CS++ Python IDE is a fully offline Python editor for iPhone and iPad, built for students learning to code. Write and run real Python 3 — including turtle graphics and multi-file projects — and work through 75 autograded challenges from the 10-unit Intro to Python catalog, all on-device. No account. No ads. No tracking. No internet required. WHAT'S INCLUDED • Free-form Python playground — write and run any Python code • On-device Python 3 runtime (Skulpt) — no install, no server, no network access • Interactive console with inline input() prompts • Turtle graphics drawn on a dedicated Graphics tab • Multi-file projects — add a helper.py tab and "import helper" just works • 15 starter templates: Hello World, variables & math, if/elif/else, for and while loops, functions, lists, dictionaries, strings, FizzBuzz, turtle graphics, random & math, statistics, CSV data, and more • Format, Abort, auto-saved code, and a run-time cap for infinite-loop protection UNIT 1 IS FREE FOREVER Unit 1 — Getting Started with Python is unlocked at install, and the free-form Playground is free forever too. Try the editor, solve real autograded challenges, and decide if the rest is worth $9.99. UNLOCK FULL INTRO TO PYTHON — $9.99 ONE-TIME A single in-app purchase unlocks all 10 Intro to Python units (75 autograded challenges): Unit 2. Variables & Data Types Unit 3. Operators & Expressions Unit 4. Strings Unit 5. Booleans & Conditionals Unit 6. Loops & Iteration Unit 7. Functions Unit 8. Lists Unit 9. Dictionaries Unit 10. Files, Tuples & a Final Project Pay once, keep forever. Restores on any device signed in to the same Apple ID. No subscription. Future content updates included. PYTHON FEATURES SUPPORTED Core Python 3: numbers, strings and f-strings, if/elif/else, for and while loops with break and continue, functions with default parameters, recursion, lists and list comprehensions, dictionaries and dict comprehensions, slicing, enumerate(), and interactive input(). Bundled modules include turtle, random, math, statistics, csv, and io. OUT OF SCOPE (not in the on-device runtime) No pip installs, no C-extension packages (NumPy, pandas), and no network access. Writes to real files aren't supported — build text in memory with io.StringIO instead. This is a learning IDE, not a deployment environment. PRIVACY Everything runs on your device. The app does not require an account, does not collect personal information, does not include analytics or advertising, and does not track you across apps. Your code stays on your device. See csplusplus.com/privacy for details. WHO IT'S FOR • Students learning Python without a desktop setup • Intro to Python classes that want practice on iPads and iPhones • Teachers who want a tablet-friendly tool for in-class practice • Self-learners working through Python on the go For lessons, Parsons problems, quizzes, flashcards, and the full browser Python IDE, visit csplusplus.com.