[Free] 4 Recommended Sites and Apps for Learning Indonesian! Thorough Explanation of Selection & Effective Usage
Jan. 26, 2026

Indonesian is attracting more and more attention right now.
Indonesia is the world's fourth most populous country and is experiencing remarkable economic growth.
Because there are many attractive tourist destinations such as Bali and Jakarta, the number of people who want to learn Indonesian for free is rapidly increasing.
- I want to visit Bali or Jakarta for travel
- I want to communicate with Indonesian friends
- I want to interact with Indonesian companies for business
In such cases, it is recommended to learn Indonesian using websites and apps that can be used for free.
In this article, we will introduce in detail recommended Indonesian learning sites and apps, as well as points for learning!
If you want to start learning Indonesian, why not use this article as a reference to find the perfect learning method for you?
[Free] Recommended Free AI Sites for Learning Indonesian!
If you want to learn Indonesian for free, Ondoku is recommended!
Ondoku is an AI app that can read Indonesian text aloud using the latest AI.
It can be used easily from the website right now in any environment, including iPhone, Android smartphones, and PC.
The biggest feature is that it can create native pronunciation audio with a high-performance AI speech synthesis engine.
You can create and study materials that match your goals, such as travel, business, or language proficiency tests.
Moreover, Ondoku is free!
Since you can read up to 5,000 characters for free, you can create plenty of Indonesian learning materials.
Why not try using Ondoku for free for your Indonesian studies?
Free Sites and Apps are Recommended for Learning Indonesian!

If you are learning Indonesian, it is recommended to utilize free sites and apps.
With free sites using the latest AI, you can easily create materials for listening and speaking.
You can also proceed with learning during your spare time using smartphone apps specialized for Indonesian.
Create Indonesian Listening and Speaking Materials for Free with AI Apps
If you are learning Indonesian, it is recommended to utilize free sites and apps!
What you should definitely use is a speech synthesis AI app that can be easily used from a website.
By using an AI app that reads Indonesian text, you can easily create materials according to your learning purposes, such as travel or business.
Since you can create Indonesian materials with native pronunciation, it is perfect for studying listening, speaking, and shadowing.
If you are creating Indonesian learning materials, the AI app Ondoku, which can be used for free from a website, is recommended.
You can download files to your iPhone or Android smartphone and learn Indonesian freely at any time.
Why not start learning Indonesian by utilizing the latest AI?
Learn Indonesian Anytime with Free Smartphone Apps!
For learning Indonesian, learning apps that can be used for free on iPhone and Android smartphones are also recommended.
The biggest merit of using free apps for iPhone (iOS) and Android smartphones is that you can study Indonesian anytime, anywhere, at your preferred time.
You can study Indonesian by utilizing spare time, such as during your commute, lunch break, or a few minutes before bed.
Another merit of using free apps on iPhone (iOS) and Android smartphones is that you can learn Indonesian at your own pace.
Since there is no need to attend a language school at a fixed time, even busy people can continue their Indonesian studies.
Free Indonesian learning sites and apps cater to various learning styles.
There are various free apps, such as apps specialized for word memorization, apps with substantial grammar explanations, and apps where you can practice conversation, allowing you to proceed with Indonesian learning more enjoyably.
To continue learning Indonesian smoothly, it is recommended to combine free AI sites and free smartphone apps.
By using them differently—such as free AI reading sites for listening and speaking, and free smartphone apps for studying words and grammar—you can improve your Indonesian smoothly.
In this way, utilizing free sites and apps is recommended for learning Indonesian.
Why not try learning Indonesian for free on your smartphone or PC?
4 Recommended Sites and Apps for [Free] Indonesian Learning

From here, we will introduce four free sites and apps recommended for learning Indonesian.
Since each site and app has its own characteristics, please find the site or app that perfectly fits your learning purpose.
1. Ondoku | Recommended Free AI Web App Ideal for Learning Pronunciation and Listening
If you are learning Indonesian, the AI reading service Ondoku is recommended!
Ondoku is a free AI app that can convert Indonesian text into native pronunciation audio using the latest AI technology.
The biggest feature of Ondoku is that you can freely create Indonesian listening materials.
You can vocalize any text, such as sentences from Indonesian textbooks or reference books, everyday conversation, or business Indonesian phrases.
Even when you cannot find materials for the content you want to study in commercially available materials, you can use Ondoku to create your own personal Indonesian learning materials.
In addition to learning Indonesian, it can also be utilized for creating Indonesian narration for YouTube videos.
Since Ondoku is a web app used from a browser, it can be used easily without installation.
Simply opening the site is sufficient from any environment, including iPhone (iOS), Android smartphones, and PC.
Audio Can Be Adjusted, Making It Perfect for Creating Indonesian Materials
With Ondoku's Indonesian reading, you can choose from six types of voices.
You can have the text read in a voice that suits your preference or application, such as female or male voices.
Another key point is that the reading speed can be adjusted.
Since the audio speed can be lowered to 0.3x, you can start learning at a slow speed first and then increase the speed as you get used to it.
You can listen to Ondoku's Indonesian audio in this article.
Please take a look!
Create Indonesian Learning Materials for Free with 'Ondoku'!
Moreover, Ondoku is free!
Since you can read up to 5,000 Indonesian characters for free, you can easily create learning materials right now.
For learning Indonesian pronunciation and listening, Ondoku is recommended!
Commercial use is also permitted, so it can be used for producing business videos for Indonesia or audio for tourist information.
Why not try using Ondoku for free for your Indonesian studies?
2. BINTANGO | Free App for Japanese People Specialized in Indonesian Word Learning

"BINTANGO" is recommended for those who want to learn Indonesian words.
It is an app compatible with iPhone (iOS) and Android smartphones and can be used for free.
The biggest feature of BINTANGO is that it is an Indonesian learning app made by Japanese people for Japanese people.
The app focuses its content on Indonesian word learning, covering a wide range from basic words to technical terms and slang.
In addition to word learning, it also features an Indonesian translation function and a question board for Indonesian learners.
In the Indonesian translation function, particularly important words are displayed so you can check if you remember them.
Another point is that the app's screen is well-designed, allowing you to proceed with Indonesian learning comfortably.
It is a recommended free app that you should definitely install on your iPhone or Android smartphone if you are learning Indonesian.
3. Nemo Indonesian | Free App for Memorizing Phrases and Words

"Nemo Indonesian" is an app where you can memorize Indonesian phrases and words.
It is compatible with iPhone (iOS) and Android smartphones, and basic functions can be used for free.
You can learn by displaying basic phrases and words like a vocabulary book.
On the screen where phrases and words are displayed, it is also possible to play audio.
However, only a portion is available in the free version, and you need to purchase the paid version for learning advanced phrases and words.
This is a free app you'll want to utilize when you first start learning Indonesian.
4. Osaka University Indonesian Self-Study Content | Free Learning Site

For those who want to study Indonesian grammar on a website, the "Indonesian Self-Study Content" provided by Osaka University is recommended.
It is an Indonesian learning site officially provided by the university and can be used for free.
It features a systematic curriculum covering Indonesian grammar, vocabulary, and conversation, allowing you to learn Indonesian step-by-step from the basics.
Since materials are prepared for various situations like "riding a bus" or "shopping," much like a language textbook, even those who have just started learning Indonesian can proceed with their studies smoothly.
Of course, it is available not only on PC but also from iPhone and Android smartphones.
The Tokyo University of Foreign Studies Indonesian Learning Site is Also Recommended
Besides this, the "TUFS Language Modules" is also famous among Indonesian learning sites provided by universities.
Since it offers more detailed content regarding Indonesian pronunciation and grammar, it is recommended to use it in conjunction with the Osaka University site.
Why Not Try Learning Indonesian for Free Using Recommended Sites and Apps?
As you can see, anyone can easily start learning Indonesian by utilizing free recommended sites and apps.
Indonesian is written in the alphabet and its pronunciation is straightforward, so self-study is possible using free sites and apps.
By using the AI reading service Ondoku, you can easily vocalize words and sentences not listed in apps or sites.
Why not try learning Indonesian for free on your iPhone, Android smartphone, or PC?
[Free] Explaining the Flow of Creating Indonesian Materials with the AI Reading App 'Ondoku'

From here, we will briefly introduce the flow of learning Indonesian with the AI reading app Ondoku!
1. Prepare Indonesian Learning Text

First, prepare the text you want to use for Indonesian learning.
Any text is fine, such as from Indonesian websites or learning sites.
It is also recommended to translate into Indonesian using AI translation sites such as DeepL.
Indonesian translation is also explained in this article.
Please take a look.
2. [Free] Read Indonesian Audio Aloud on the 'Ondoku' Site
Once the text is ready, create the audio for free on the Ondoku site.
First, open the home page of the Ondoku site.
Paste the Indonesian text into the text box.

This time, we are entering the poem "Aku" by the Indonesian poet Chairil Anwar as an example.
Select "Indonesia (Indonesia)" from the language menu.

Select the type of voice to use for reading.

In Ondoku's Indonesian reading, you can choose between female and male voices.
You can listen to them in this article, so please take a look!
In Ondoku, you can also change the reading speed and voice pitch.

This time, we will read with the default settings.
Preparation is now complete.

Press "Read aloud" to start speech synthesis.
The speech synthesis process completes in a few seconds.
When the process is finished, the screen switches and the audio player is displayed.

Listen to it, and if there are no problems, press "Download" to save the audio file to your smartphone or PC.
With this, you have successfully created audio for Indonesian learning for free using Ondoku!
3. Learn Indonesian Using Audio Created with 'Ondoku'
Now you just need to learn Indonesian using the created audio files!
When studying listening, simply play the audio file.
For studying speaking and pronunciation, practice repeatedly so you can achieve the same pronunciation as the audio file.
What is recommended is incorporating "shadowing" into your learning.
Shadowing is a study method where you pronounce at the same speed as if you are chasing the audio file after it starts playing.
By doing it repeatedly, you can train your listening, speaking, and pronunciation simultaneously.
If the audio is too fast, you can use Ondoku's speed adjustment function to create material audio that reads slowly.
Shadowing is explained in this article, using English learning as an example.
Please take a look.
In this way, by using the AI reading app Ondoku, it is possible to learn Indonesian for free!
Since you can freely create Indonesian materials from basic conversation and travel conversation to business conversation, why not try Ondoku for free?
Points You Should Know When Learning Indonesian

From here, we will introduce knowledge to deepen your understanding of Indonesian learning.
By knowing the characteristics of Indonesian and points for learning, you can acquire Indonesian more smoothly.
What Kind of Language is Indonesian? Basic Knowledge for Learning
Indonesian is a language with a particularly large number of speakers among the languages spoken in the world.
Surprisingly, it is the seventh most spoken language in the world.
Indonesia's population is approximately 280 million, ranking fourth in the world.
Furthermore, Malaysian (Malay), which is almost the same language as Indonesian, is also used in Malaysia and various Southeast Asian countries.
In this way, if you remember Indonesian, it is possible to communicate with many people.
It can be useful not only for travel but also for business with rapidly growing Indonesia.
Indonesian Grammar is Very Simple
The biggest feature of Indonesian is that the grammar is simple.
There are no tense changes like in English, and there is almost no verb conjugation.
Since there are no plural forms for nouns either, Indonesian is said to be an easy language to learn.
Also, Indonesian pronunciation is relatively easy for Japanese speakers to master.
Since Indonesian is written in Roman characters (alphabet), learning to read and write is also easy.
Indonesian pronunciation is regular and will mostly be understood if read exactly as written, so the hurdle for learning pronunciation is low.
Thus, Indonesian is an easy-to-learn and widely used language.
Since you can interact with many people in significantly developing Indonesia, it is recommended to start learning now.
What are the Points Where People Often Stumble in Indonesian Learning?
Although Indonesian is an easy language to learn, there are some points where people tend to stumble.
First, in Indonesian, there are casual expressions used in everyday conversation and polite expressions used in formal situations.
For example, the Indonesian word for "you" needs to be used differently depending on the person and situation, such as "kamu," "Anda," "Bapak," or "Ibu."
It is important to read many example sentences on Indonesian learning sites and apps to get a sense of how to use them correctly.
Also, pay attention to Indonesian slang and youth speak.
There are often differences between the Indonesian learned in textbooks or apps and the Indonesian actually used by Indonesian people.
When you actually talk to Indonesians you've met on the internet, many unknown words may be used.
In such cases, it is recommended to touch upon Indonesian as it is actually used on social media or YouTube.
If there is a word you don't understand, you can enter it into Ondoku to have it read aloud, allowing you to learn the pronunciation of unknown words.
To remember Indonesian, it is important to listen to a lot of Indonesian and speak it a lot anyway.
It is recommended to utilize sites and apps that can be used for free, starting with Ondoku, to learn more and more Indonesian expressions and words.
Why Not Learn Indonesian with Recommended Free Sites and Apps?
In this article, we explained recommended sites and apps usable for learning Indonesian, as well as points for learning.
By utilizing free sites and apps, you can easily start learning Indonesian.
What is particularly recommended is using the AI app Ondoku to create materials for listening, speaking, and shadowing.
By utilizing free sites and apps, you can effectively train your Indonesian pronunciation and listening skills.
Why not start learning Indonesian from today using recommended free sites and apps?
■ AI voice synthesis software "Ondoku"
"Ondoku" is an online text-to-speech tool that can be used with no initial costs.
- Supports approximately 50 languages, including Japanese, English, Chinese, Korean, Spanish, French, and German
- Available from both PC and smartphone
- Suitable for business, education, entertainment, etc.
- No installation required, can be used immediately from your browser
- Supports reading from images
To use it, simply enter text or upload a file on the site. A natural-sounding audio file will be generated within seconds. You can use voice synthesis up to 5,000 characters for free, so please give it a try.
Email: ondoku3.com@gmail.com
"Ondoku" is a Text-to-Speech service that anyone can use for free without installation. If you register for free, you can get up to 5000 characters for free each month. Register now for free
