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Best Femtogram Apps & Games

196+ iOS apps & games curated and reviewed

4.6 avg rating
19 free apps & games
Updated June 2026

Looking for free femtogram apps and games? 19 of our 196+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Top Picks for Femtogram

Dictionary.com: English Words#2

Dictionary.com: English Words by Curiosity Media, Inc.

Dictionary, Thesaurus, Vocab
Strong Contender
🔍 Reference
4.8😐(328K ratings)
FreeAdsIn-App Purchases
Dictionary.com: English Words screenshot 1
Dictionary.com: English Words screenshot 2
Dictionary.com: English Words screenshot 3
Dictionary.com: English Words screenshot 4
Dictionary.com: English Words screenshot 5
Dictionary.com: English Words screenshot 6

Access over 2 million trusted definitions and synonyms for English words. Enhance your vocabulary with daily new words, example sentences, and audio pronunciations. This app provides grammar tips and editorial content to deepen your understanding of the English language.

What We Love

  • 🚀 Robust dictionary and thesaurus
  • 🤓 Helpful resources like blogs and articles
  • 💡 Useful word games and puzzles
  • 👍 Easy to use and navigate

Room to Improve

  • 🐛 Inconsistent search results and missing definitions
  • 💸 Aggressive ads even after paid upgrades
  • 🤯 Frequent crashes and performance issues
FreeSaurus - The Free Thesaurus!#3

FreeSaurus - The Free Thesaurus! by Weeswares Pte Ltd

Worth Considering
🔍 Reference
3.4😐(120 ratings)
Free
FreeSaurus - The Free Thesaurus! screenshot 1
FreeSaurus - The Free Thesaurus! screenshot 2
FreeSaurus - The Free Thesaurus! screenshot 3
FreeSaurus - The Free Thesaurus! screenshot 4

This is a straightforward thesaurus app that provides synonyms and antonyms for words. It focuses on simplicity and ease of use, offering related words alongside definitions. An internet connection is required for it to function.

What We Love

  • ⭐ Great free app
  • 📝 Helpful for writing and finding synonyms
  • 🔍 Simple and easy to use interface

Room to Improve

  • ⚠️ Needs to be updated for iOS 11 compatibility
  • 🐛 Crashes and freezes on some devices
  • 🔌 Requires internet connection to function

More Femtogram apps to explore

4
Word to Word®: Fun Brain Games
Word to Word®: Fun Brain Games
Word to Word®: Fun Brain Games
Puzzle Trivia Search & Connect
Free

Engage your mind with a popular word association game. Solve puzzles using knowledge of synonyms, trivia, idioms, and more. Enjoy offline play with no time limits, perfect for family fun and brain exercise.

Word association puzzlesSynonym and antonym challengesTrivia and fun facts
🎮 Games
(6.8K)
free with in-app purchases
5
WordReference Dictionary
WordReference Dictionary
WordReference Dictionary
by WordReference.com, LLC
Free

Access a comprehensive suite of dictionaries and translation tools for multiple languages. Explore conjugations, synonyms, and a vast forum with millions of answered questions. This app provides quick access to extensive language resources.

Extensive multilingual dictionariesVerb conjugatorsSynonym finder
🔍 Reference
(5)
ad-supported
6
Merriam-Webster Dictionary
Merriam-Webster Dictionary
Merriam-Webster Dictionary
by Merriam-Webster, Inc.
Free

Access America's most respected dictionary, updated with new words and meanings. This app offers offline access, voice search, daily vocabulary challenges, and a thesaurus. It's designed for English language reference, education, and vocabulary enhancement.

Offline dictionary accessVoice search for wordsDaily Word of the Day
🔍 Reference
(320K)
free with in-app purchases
7
WordUp - Vocabulary Builder
WordUp - Vocabulary Builder
WordUp - Vocabulary Builder
Learn New English Words Via AI
Free

This app uses AI to personalize your English vocabulary learning journey. It offers interactive challenges, AI-powered practice with a virtual teacher and celebrities, and detailed word pages with AI-generated visuals. Track your progress and expand your word knowledge effectively.

AI-powered personalized learning map25,000 prioritized English words9 interactive challenge types
📚 Education
(14K)
free with in-app purchases
8
WordPal - Vocabulary Builder
WordPal - Vocabulary Builder
WordPal - Vocabulary Builder
Learn new words: expand vocab
Free

Enhance your English vocabulary with this intuitive app. It uses spaced repetition to help you learn new words effectively, offering definitions, examples, and progress tracking. Achieve your language learning goals with daily reminders and streaks.

Spaced repetition learning algorithmMultiple choice synonym practiceWord definitions and examples
📚 Education
(8.8K)
freemium
9
WordWeb Dictionary
WordWeb Dictionary
WordWeb Dictionary
Offline ad-free dictionary
Free

This app provides a comprehensive offline English dictionary and thesaurus with fast searching, spelling suggestions, definitions, and usage examples. It offers extensive word data and advanced search filters without requiring an internet connection.

Offline dictionary and thesaurusFast searchingSpelling suggestions
🔍 Reference
(85)
free
10
Etymonline English Dictionary
Etymonline English Dictionary
Etymonline English Dictionary
Dictionary to Build Vocabulary
Free

Explore the origins and history of English words with this comprehensive dictionary app. It offers instant search, related word suggestions, and an offline mode for premium users. Enhance your vocabulary and understanding of word roots.

Word origin explorationInstant search with suggestionsRelated words by root
📚 Education
(11K)
free with in-app purchases
11
Urban Dictionary
Urban Dictionary
Urban Dictionary
by Urban Dictionary LLC
Free

Access a vast collection of user-submitted definitions for slang and non-slang words. Search, vote on definitions, and discover new words with daily updates. Share interesting terms easily with friends.

Unlimited free searchesSlang and non-slang definitionsVote on definitions
🔍 Reference
(3.5K)
free
12
Merriam-Webster Dictionary+
Merriam-Webster Dictionary+
Merriam-Webster Dictionary+
Premium Ad-free Dictionary
$9.99

Access America's leading dictionary with over 15,000 extra entries for people and places. Enjoy offline access, voice search, and daily vocabulary builders. This app offers expert word guidance with a thesaurus and example sentences.

Ad-free experience15,000+ premium entriesOffline dictionary access
🔍 Reference
(22K)
freemium
13
Exam Vocabulary Builder
Exam Vocabulary Builder
Exam Vocabulary Builder
by Renkara Media Group, Inc.
Free

Expand your English vocabulary for academic and professional exams with this app. It uses flashcard-like learning with definitions, synonyms, and example sentences. Features include spaced repetition, quizzes, and progress tracking.

Flashcard-like learningDefinitions, synonyms, example sentencesSpaced repetition mode
📚 Education
(3)
free with in-app purchases
14
Four Letters
Four Letters
Four Letters
Endless 4 letter word puzzle
Free

Engage in a fast-paced word puzzle by connecting four letters to form words before time runs out. Improve your vocabulary with an in-game dictionary and challenge friends on global leaderboards. Unlock achievements and explore thousands of letter combinations.

Connect four letters to form wordsBeat the countdown clockLearn new words with in-game dictionary
🎮 Games
(771)
free with in-app purchases
15
Vocabulary Builder by Magoosh
Vocabulary Builder by Magoosh
Vocabulary Builder by Magoosh
by Magoosh
Free

Master essential vocabulary with this engaging word game. Daily quizzes cover 1200 important words with definitions and examples, progressing from basic to advanced levels. Track your learning and unlock new challenges.

1200 expert-selected vocabulary wordsDefinitions and example sentencesBasic, Intermediate, and Advanced levels
🎮 Games
(6.9K)
free
16
Vocabulary - Learn words daily
Vocabulary - Learn words daily
Vocabulary - Learn words daily
Erweitern Sie Ihren Wortschatz
Free

Expand your vocabulary with daily word learning and engaging games. This app offers customizable learning paths and difficulty levels to suit your English proficiency. Make vocabulary acquisition a fun and effective part of your routine.

Learn new words dailyCustomizable difficulty levelsSelect vocabulary categories
📚 Education
(206K)
free with in-app purchases
17
Advanced Dictionary&Thesaurus
Advanced Dictionary&Thesaurus
Advanced Dictionary&Thesaurus
English dictionary with Audio
Free

This comprehensive English dictionary and thesaurus offers precise definitions, synonyms, antonyms, and related words. It features intelligent search tools, offline audio, and customizable themes to enhance your language learning experience.

140,000+ definitionsSynonyms, antonyms, and related wordsOffline audio pronunciation
🔍 Reference
(4.3K)
free with in-app purchases
18
Dictionary.
Dictionary.
Dictionary.
by TheFreeDictionary.com
Free

Access a comprehensive dictionary, thesaurus, and translation tool with millions of definitions and synonyms. Explore specialty dictionaries, learn new words daily, and play word games. This app offers offline access and integrates seamlessly with other applications.

Offline dictionary and thesaurusMillions of definitions and synonymsWord of the Day and Idiom of the Day
🔍 Reference
(14K)
free with in-app purchases
19
Word Tag: Lingo learning game
Word Tag: Lingo learning game
Word Tag: Lingo learning game
Learn vocabulary with games
Free

This app uses a 3D action platformer game to improve English vocabulary and speaking skills. It offers daily challenges and quizzes, scientifically proven to enhance learning through play and spaced repetition. Suitable for ages 7 and up, it's a safe and ad-free learning tool.

3D action platformer gameplayVocabulary expansionEnglish speaking skills improvement
📚 Education
(8.6K)
subscription
20
Dictionary Linguee
Dictionary Linguee
Dictionary Linguee
German, French, Spanish, more
Free

Access reliable translations for multiple languages, including French, Spanish, and German, with this comprehensive dictionary app. It offers fast, offline access to a vast database compiled by lexicographers and includes example sentences and audio pronunciations.

Translations in French, Spanish, German, and moreCompiled by over 400 lexicographersFast translations with quick search
🔍 Reference
(11K)
free