Comparison

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.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

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.

Highlights
  • Advanced grammar and spelling checker
  • Import text from PDFs
  • Synonym finder and word choice improvement
  • Word definitions
  • Editing history review
  • Dark Mode support
Read full description

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

Learn Python in 21 Days4 screens
Grammar Check Corrector +4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 20, 2026 and September 13, 2026 respectively.

Scorecard5 real differences · 5 level
Learn Python in 21 Days versus Grammar Check Corrector +: the parameters behind the verdict, then further details
ParameterLearn Python in 21 DaysGrammar Check Corrector +
PriceFreeFree
Rating4.5 (17 ratings)4.8 (201 ratings) — better
Positive reviews0.0% of reviews88.9% of reviews — better
Number of ratings17201 — better
Update frequencyEvery 2 monthsEvery 2 months
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15 — better17.6
Further details — not scored
Size191 MB11 MB
Age rating4+4+
DeveloperAdam AtamniaENGINES STUDIO LAB

Customer experience

Learn Python in 21 Days

All ratings17 ratings
Positive88.2%
Neutral0.0%
Negative11.8%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Grammar Check Corrector +

All ratings201 ratings
Positive96.0%
Neutral1.0%
Negative3.0%
Written reviews9 reviews
Positive88.9%
Neutral0.0%
Negative11.1%

In-app purchases

2 purchases

Learn Python in 21 Days

Subscriptions1
  • Monthly Full Access3 Days trial$9.991 Month
One-time1
  • Lifetime Full Access$19.99
4 purchases

Grammar Check Corrector +

Subscriptions3
  • 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
One-time1
  • Premium access forever$24.99

Questions

Is Learn Python in 21 Days free?
Learn Python in 21 Days is free to download, with in-app purchases available.
Is Grammar Check Corrector + free?
Grammar Check Corrector + is free to download, with in-app purchases available.
Which has better reviews, Learn Python in 21 Days or Grammar Check Corrector +?
Grammar Check Corrector + is rated higher. Learn Python in 21 Days averages 4.5 out of 5 from 17 ratings, while Grammar Check Corrector + averages 4.8 from 201 ratings.
Do Learn Python in 21 Days or Grammar Check Corrector + have ads?
Grammar Check Corrector + shows ads; Learn Python in 21 Days does not.
Which is updated more often, Learn Python in 21 Days or Grammar Check Corrector +?
Learn Python in 21 Days ships an update every 2 months, and Grammar Check Corrector + every 2 months. Most recently, Learn Python in 21 Days was updated on September 20, 2026 and Grammar Check Corrector + on September 13, 2026.

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