Best Osistem Apps

211+ iOS apps curated and reviewed

4.6 avg rating
19 free apps
Updated June 2026

If you already know OSIstem, this is the deeper bench. 211+ osistem apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of June 2026.

Top Picks for Osistem

Oxford Dictionary & Thesaurus#2

Oxford Dictionary & Thesaurus by MobiSystems, Inc.

Thesaurus & Offline Vocabulary
Strong Contender
🔍 Reference
4.6😐(28K ratings)
FreeAdsIn-App Purchases
#86in Reference
Oxford Dictionary & Thesaurus screenshot 1
Oxford Dictionary & Thesaurus screenshot 2
Oxford Dictionary & Thesaurus screenshot 3
Oxford Dictionary & Thesaurus screenshot 4
Oxford Dictionary & Thesaurus screenshot 5
Oxford Dictionary & Thesaurus screenshot 6

Access a vast collection of dictionaries and thesauruses with definitions, pronunciations, and etymology. Features include offline access, advanced search options, and personalized word lists. Ideal for students, professionals, and word enthusiasts.

What We Love

  • 👍 Reliable and simple to use
  • 👍 Comprehensive and best for all English, especially rare and aged language
  • 👍 Very useful for learning new words
  • 👍 Excellent reference app

Room to Improve

  • 🐛 Glitchy, way too many ads
  • 🔒 Annoying popup ads makes it unusable
  • 🔒 Ads stuck in, despite payment
BoldVoice: Accent Training#3

BoldVoice: Accent Training by Wellocution Inc.

Speak English, Pronunciation
Worth Considering
📚 Education
4.8😊(53K ratings)
FreeAdsIn-App Purchases
#85in Education
BoldVoice: Accent Training screenshot 1
BoldVoice: Accent Training screenshot 2
BoldVoice: Accent Training screenshot 3
BoldVoice: Accent Training screenshot 4
BoldVoice: Accent Training screenshot 5
BoldVoice: Accent Training screenshot 6

Improve your English pronunciation and speaking skills with AI-powered feedback and guidance from Hollywood accent coaches. Practice daily with interactive lessons and track your progress to speak with greater clarity and confidence.

What We Love

  • 🚀 Excellent pronunciation coaching
  • 👍 Personalized lessons and feedback
  • ⏱️ Convenient short daily practice
  • 🎓 Helpful for improving accent and communication

Room to Improve

  • 🚫 Focuses only on American English accent
  • 💰 Expensive subscription
  • 🔒 Automatic charges after free trial

More Osistem apps to explore

4
ELSA Speak - English Learning
ELSA Speak - English Learning
ELSA Speak - English Learning
Practice Conversations with AI
Free

This AI-powered English tutor helps you practice conversations, improve pronunciation, and build vocabulary for real-life scenarios like job interviews and presentations. It offers personalized learning paths and instant feedback to boost your speaking confidence.

AI-powered English tutorConversation practicePronunciation training
📚 Education
(111K)
free with in-app purchases
5
Kurdish English Dictionary +
Kurdish English Dictionary +
Kurdish English Dictionary +
فه رهه نگی ئینگلیزی - كوردی
Free

This app provides a comprehensive Kurdish to English and English to Kurdish dictionary with translation capabilities. It includes vocabulary games, practice tests, and daily lessons to enhance language learning. Offline access and native speaker audio pronunciation are also available.

English-Kurdish dictionaryKurdish-English dictionaryKurdish Translator
📚 Education
(5.4K)
free with in-app purchases
6
Kurdish Dictionary - Dict Box
Kurdish Dictionary - Dict Box
Kurdish Dictionary - Dict Box
English Kurdish Translation
Free

This app serves as a comprehensive English to Kurdish and Kurdish to English dictionary and translator. It offers offline functionality, pronunciation, definitions, and the ability to translate words directly within other applications. Users can also find related words, phrases, and even use image search for a richer learning experience.

Offline translation and pronunciationExtensive word and expression databaseIn-app word translation
🔍 Reference
(14K)
free with in-app purchases
7
(How to) Pronounce
(How to) Pronounce
(How to) Pronounce
Learn pronunciation of words
Free

Master pronunciation in multiple languages with this app. Learn correct intonation, adjust speech speed, and compare your pronunciation to native speakers. Essential for language learners and professionals.

Multi-language supportLearn common mispronunciationsPractice phrase intonation
📚 Education
(28K)
free with in-app purchases
8
Tureng Dictionary
Tureng Dictionary
Tureng Dictionary
by OZGUR SUYEL
Free

This comprehensive dictionary app offers over 3 million Turkish and English words and phrases, categorized by usage. It provides audio pronunciations in British, American, and Australian accents, with a continuously updated database based on expert translations and user suggestions.

3+ million Turkish and English words/phrasesCategorized by field of usageAudio pronunciation in 3 accents
🔍 Reference
(22)
free with in-app purchases
9
iTranscribe - Audio to Text
iTranscribe - Audio to Text
iTranscribe - Audio to Text
Voice Recorder & Transcribe
Free

This app transforms your phone into a powerful voice recorder and transcriber. It offers real-time transcription, translation, and advanced export options for various professional and academic needs. Manage, search, and share your audio and text efficiently.

Voice recordingReal-time transcriptionSynchronous translation
📊 Productivity
(6.6K)
free with in-app purchases
10
Rebin Dict Plus - Kurdish
Rebin Dict Plus - Kurdish
Rebin Dict Plus - Kurdish
Kurdish Dictionary&Translator
Free

This comprehensive dictionary and translator app offers extensive English-Kurdish and Kurdish-English word and sentence translations. It includes features like camera-based word search, pronunciation comparison, and support for multiple languages, making it a valuable tool for language learners.

English-Kurdish dictionary (80k+ words)Kurdish-English dictionary (67k+ words)Sentence translation (English-Kurdish)
📚 Books
(12K)
free with in-app purchases
11
Sesli Sozluk Dictionary
Sesli Sozluk Dictionary
Sesli Sozluk Dictionary
by Sesli Sozluk Ltd.
Free

This comprehensive dictionary app offers a vast database of 20 million words across 20 languages, complete with pronunciations, images, and videos. Enhance your vocabulary with interactive language games and access translation services. It provides both online and offline functionality for convenient learning.

20 million word database20 language supportAudio pronunciations
🔍 Reference
(9.9K)
free with in-app purchases
12
Radyo Kulesi - Turkish Radios
Radyo Kulesi - Turkish Radios
Radyo Kulesi - Turkish Radios
Tune in to live Türkçe music!
Free

Access hundreds of live radio stations from Turkey and around the world. Stream various genres including music, news, sports, and talk radio. Discover new stations with an automatic scanner and create a personalized favorites list.

Hundreds of live Turkish radio stationsDiverse music genresNews and talk radio
🎵 Music
(19K)
ad-supported
13
Learn Turkish: Language Course
Learn Turkish: Language Course
Learn Turkish: Language Course
Fun learning lessons by Mondly
Free

Master Turkish with daily, engaging lessons. This app helps you quickly memorize words, form sentences, and speak phrases through interactive exercises. It adapts to your learning level, offering a comprehensive approach to vocabulary, grammar, and pronunciation.

Daily free lessonsCore word memorizationSentence formation
📚 Education
(1.5K)
subscription
14
Persian Dictionary - ديكشنري
Persian Dictionary - ديكشنري
Persian Dictionary - ديكشنري
ديكشنري و مترجم فارسي انگلیسي
Free

This app offers a comprehensive offline Persian-English and English-Persian dictionary with audio pronunciation and vocabulary games. It includes thousands of words, phrases, and examples, with an optional online translation feature. Subscription packages are available for extended access.

Offline Persian-English dictionaryOffline English-Persian dictionaryNative audio pronunciation
🔍 Reference
(10K)
free with in-app purchases
15
(How to) Pronounce PRO
(How to) Pronounce PRO
(How to) Pronounce PRO
Pronunciation dictionary
$1.99

Improve your spoken language skills with this pronunciation dictionary. Hear words spoken by native speakers, record yourself to compare, and adjust playback speed. Essential for language learners and professionals.

Pronunciation dictionaryRecord and compare your pronunciationMultiple language support
📚 Education
(3.2K)
free with in-app purchases
16
Pronuncian - English Pronounce
Pronuncian - English Pronounce
Pronuncian - English Pronounce
Improve Pronunciation Skills
Free

Master American English pronunciation with this app. Learn the 43 sounds, practice with listen-and-repeat exercises, and improve your speaking skills for exams and daily communication. Works offline and is suitable for learners of all levels.

Learn 43 American English soundsListen-and-repeat practiceOffline functionality
📚 Education
(4.4K)
free
17
Persian Dictionary - Leitnary
Persian Dictionary - Leitnary
Persian Dictionary - Leitnary
English-Farsi Dictionary
Free

This app is a comprehensive English-Persian dictionary and vocabulary learning tool. It offers offline access to over 200,000 definitions, pronunciations, and example sentences. It also incorporates the Leitner system for effective word memorization.

English-Persian and Persian-English dictionaryOffline access to definitionsAudio pronunciations (online and offline)
📚 Education
(2.9K)
free
18
تعلم التركية بالصوت
تعلم التركية بالصوت
تعلم التركية بالصوت
التركية : الكلمات والدردشات
Free

Learn Turkish with this app, mastering popular words and phrases. It offers audio pronunciation, offline access, and translations to Arabic, making it ideal for travel and communication.

Learn Turkish greetingsLearn Turkish numbers offlineLearn Turkish time
📚 Education
(22)
free with in-app purchases
19
Howjsay Pronunciation
Howjsay Pronunciation
Howjsay Pronunciation
Audio Dictionary
Free

This app provides accurate audio pronunciations for over 180,000 words and phrases, using professionally recorded human voices. It covers a wide range of vocabulary, including specialized terms and heteronyms, ensuring you can pronounce any word correctly. Access your pronunciation history and save favorites for quick reference.

180,000+ recorded words & phrasesHuman voice audio playbackComprehensive dictionary coverage
🔍 Reference
(1.9K)
free with in-app purchases
20
Turkish by Nemo
Turkish by Nemo
Turkish by Nemo
Easy, fast and fun learning
Free

Learn Turkish with native speaker audio and practice pronunciation with a speech studio. This app focuses on essential words and phrases for everyday conversations, allowing you to learn at your own pace without formal lessons. It tracks your progress and immerses you in the sounds of the language for natural speaking.

Native speaker audio for essential words and phrasesSpeech Studio for accent mastery and pronunciation practiceOffline access to all downloaded audio
✈️ Travel
(1.6K)
free with in-app purchases