Best apps like 21 Sharp

10+ similar apps compared and reviewed

3.6 avg rating

10 free apps

Updated October 2026

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🎬 Entertainment

Looking for something like 21 Sharp? We've analyzed 10+ similar apps to help you find the best alternative. Each app is compared by ratings, features, and real user reviews, so you can make the right choice.

Top Alternatives to 21 Sharp

#1

WordWiz: Learn New Words by Howard Tran

Define & Learn Words Instantly

Editor's Choice

0.0(0 ratings)

FreeIn-App Purchases

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#2

Learn Cryptography: Encryption by MEHMET CANKER (TR)

Encryption, Hashing & Security

Strong Contender

5.0(1 ratings)

FreeAdsIn-App Purchases

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Master the art and science of cryptology with an AI-powered learning app. Explore encryption, decryption, ciphers, and cryptographic systems through interactive tools, puzzles, and a structured curriculum. Ideal for beginners to professionals seeking to understand digital security.

#3

RobotMake by 广州途道信息科技有限公司

Worth Considering

1.8(4 ratings)

Free

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This app allows users to control robots using programmable blocks. It offers guided assembly and installation tutorials for mechanical and robot components, enabling users to create custom robot movements and actions.

More apps like 21 Sharp

Morse Code Complete: Learn CW

Morse Code Complete: Learn CW

Morse Code Complete: Learn CW

Course, Trainer & Translator

Master Morse code with a comprehensive course covering both sending and receiving. Progress from basic characters to real-world communication, with structured lessons, practice modes, and support for external hardware. Offers a focused learning experience without ads.

Structured Morse code courseLearn both copying and sendingPractice with real key or paddle modes

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by Mobitti Ltd.

Access university resources and information on the go. This app provides a convenient way for students and faculty to stay connected with campus life and academic services.

Campus information accessStudent resourcesFaculty resources

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by Prosper Independent School District

Stay informed about school district happenings with this app. Access event calendars, customize notifications for your student's organizations, view weekly cafeteria menus, and get live updates from administration. Easily find staff and department contact information.

Event calendar with sharingCustomizable student organization notificationsWeekly cafeteria menus

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Dori Speak AI English Learning

Dori Speak AI English Learning

Dori Speak AI English Learning

English for work & daily life

Practice speaking English with AI characters that have unique personalities and voices. Engage in over 500 real-life conversation scenarios, create custom ones, and receive personalized feedback to improve fluency and confidence for tests and daily life.

Realistic AI characters with unique personalities500+ real-life conversation scenariosCustom scenario and character creation

free with in-app purchases

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SparkMo: Learn Chinese & HSK

SparkMo: Learn Chinese & HSK

SparkMo: Learn Chinese & HSK

HSK 1-6 Vocab, Pinyin & Audio

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Zetamac Arithmetic Practice

Zetamac Arithmetic Practice

Zetamac Arithmetic Practice

Mental Math for Quants

This app offers mental math practice tailored for quantitative finance professionals. It focuses on improving calculation speed and accuracy for complex numerical problems.

Mental math practiceQuantitative finance focusCalculation speed improvement

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Follett Aspen Go

Follett Aspen Go

Follett Aspen Go

by Follett School Solutions, LLC

This app provides parents and students with real-time updates and notifications from their school community. It integrates seamlessly with the Aspen Student Information System, ensuring easy access to important school information.

Real-time push notificationsSchool administrator and teacher updatesSeamless Aspen SIS integration

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