Learn Python in 21 Days vs Grammar Check Corrector +
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Learn Python in 21 Days
Master Python programming with interactive lessons covering variables, data types, loops, functions, and more. Practice coding directly within the app and explore advanced topics like error handling and object-oriented programming.
- Variables, indentation, and comments
- Data types: int, float, str, bool, list, tuple, set, dict
- Control flow: conditions and loops
- Functions and modules
- Error handling and class basics
- In-app coding practice
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Note: Screenshots may not reflect the final version of the app. Get Excited! Here is what you learn (subject to modification): - Introduction: Learn variables, indentation, and comments. - Data Types: Explore int, float, str, bool, list, tuple, set, dict. - Numbers: Work with integers, floats, and arithmetic operations. - Conditions: if, else, elif, boolean values, comparison, and logical operators. - Strings: String manipulation, concatenation, indexing, and slicing. - Lists and Tuples: Learn list operations, immutability in tuples, and common methods. - Loops: Use for loops, while loops, and the range() function. - Sets: Understand set properties and perform union, intersection, and difference. - Dictionaries: Work with key-value pairs and common dictionary methods. - Functions: Define functions, use arguments, return values, and lambda functions. - Modules: Import libraries like math and random. - Error Handling: Handle exceptions using try, except, and finally. - Class Basics: Learn basic object-oriented programming, classes, and objects.
Grammar Check Corrector +
This writing assistant helps you eliminate errors and improve your text. It offers advanced grammar and spelling checks, synonym suggestions, and definitions to refine your vocabulary. Review your editing history and enjoy a user-friendly interface with dark mode.
- Advanced grammar and spelling checker
- Import text from PDFs
- Synonym finder and word choice improvement
- Word definitions
- Editing history review
- Dark Mode support
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Never make a writing mistake again – your simple, powerful grammar and writing assistant. Easily check grammar, refine your text, and enhance your writing in just a few taps. Whether you're drafting an email, editing a document, or improving your vocabulary Key Features: • Advanced grammar and spelling checker for error-free writing • Import and analyze text from PDFs • Instantly find synonyms and improve word choice • Get clear, concise definitions for any word • Review your editing history and revisit past corrections • Clean, intuitive interface with Dark Mode support Use the app for free. To unlock unlimited access, you may need to purchase a subscription or in-app purchase. Privacy Policy: enginesstudio.tech/privacy Support & Terms: enginesstudio.tech/support/contact
Screenshots
Verdict
The clearest difference is review sentiment: Grammar Check Corrector + at 89% against Learn Python in 21 Days's 0%. Grammar Check Corrector + also leads on rating (4.8 vs 4.5) and ratings volume (201 vs 17). Learn Python in 21 Days's advantage is ads (none vs shown) and iOS requirement (15 vs 17.6). On price, update cadence, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Learn Python in 21 Days sells 2 in-app purchases, starting at $9.99 per month and Grammar Check Corrector + sells 4 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Grammar Check Corrector + holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Grammar Check Corrector + has 201 ratings behind it against 17, so its average is the more settled of the two. Written reviews point the same way: 0% of Learn Python in 21 Days's written reviews are positive against 89% of Grammar Check Corrector +'s.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 20, 2026 and September 13, 2026 respectively.
| Parameter | Learn Python in 21 Days | Grammar Check Corrector + |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (17 ratings) | 4.8 (201 ratings) — better |
| Positive reviews | 0.0% of reviews | 88.9% of reviews — better |
| Number of ratings | 17 | 201 — better |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15 — better | 17.6 |
| Further details — not scored | ||
| Size | 191 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Adam Atamnia | ENGINES STUDIO LAB |
Customer experience
Learn Python in 21 Days
Grammar Check Corrector +
In-app purchases
Learn Python in 21 Days
- Monthly Full Access3 Days trial$9.991 Month
- Lifetime Full Access$19.99
Grammar Check Corrector +
- Premium access for 1 week3 Days trial$3.997 Days
- Premium access for 1 month$12.991 Month
- Premium access for 1 year$29.991 Year
- Premium access forever$24.99
Questions
Is Learn Python in 21 Days free?
Is Grammar Check Corrector + free?
Which has better reviews, Learn Python in 21 Days or Grammar Check Corrector +?
Do Learn Python in 21 Days or Grammar Check Corrector + have ads?
Which is updated more often, Learn Python in 21 Days or Grammar Check Corrector +?
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