Mazelingo

Mazelingo

Mazelingo replaces part of the Japanese text you choose with English so you can read it in a Japanese-English mix, with the English ratio and difficulty fully adjustable.

freemium
Last Updated 10/9/2026

About Mazelingo

Mazelingo is a reading tool: it replaces part of the Japanese text you provide with English and presents it as a natural blend of Japanese and English. You can set the amount and difficulty of English separately (choose from 20%, 40%, 60%, or 80%, and switch even while reading), and when you come across an English sentence you can't understand, one tap switches it back to the original Japanese on the spot. It also offers a distraction-free reading interface with adjustable themes and font sizes. You can paste sample texts or articles you want to read; free trials require no registration, and after signing in with Google you can read once per day for free—upgrade to Pro if you need more usage.

Best for

Japanese readers who want to practice English reading while enjoying Japanese content
English learners who find full English texts too difficult and need a gradual transition
Readers who want to adjust the English ratio and difficulty at their own pace

Best use cases

Reading Japanese articles or book chapters while gradually increasing the English ratio

Checking the original Japanese on the spot when an English sentence is hard to understand

Pasting an interesting article into the web reader and reading it with an English amount and difficulty that suit you

Reading for long stretches with a comfortable interface

Features

Adjustable English amount

Choose the English ratio from 20%, 40%, 60%, or 80%, and change it even while reading.

Separate control of difficulty and amount

Set the English "amount" and "difficulty" separately, for example by choosing "easy" or "standard" English.

One tap back to Japanese

Tap an English sentence to view the original Japanese right away.

Customizable reading interface

Switch themes and font sizes for comfortable reading both day and night.

Pros

  • Try sample texts and your own articles without registering
  • Adjust the English ratio from 20% to 80%, and switch even mid-read
  • Set the amount and difficulty of English separately to match your level
  • Switch any English sentence back to Japanese with one tap to confirm
  • Customizable themes and font sizes in the reading interface

Cons

  • Pro allows up to 20,000 characters per use and 1,200,000 characters per month, and requires a Google account

Pricing Plans

Pro 月払い

¥980月・税込
  • 1日の回数制限なし
  • 1回20,000文字まで
  • 毎月1,200,000文字まで
  • Googleアカウントが必要

Pro 年払い

¥7,800年・税込
  • 1日の回数制限なし
  • 1回20,000文字まで
  • 毎月1,200,000文字まで
  • Googleアカウントが必要

* Pricing information is for reference only. Please refer to the latest announcement on Mazelingo's official website.

FAQ

It's a reader that replaces part of Japanese text with English, letting you read in a Japanese-English mixed form.
No. Without registering, you can try a sample text or your own article once; after signing in with Google, you can read once per day for free.
Yes. There are four levels—20%, 40%, 60%, and 80%—and you can switch even while reading.
You can choose the English difficulty separately (easy or standard), and you can also tap any hard-to-read sentence to switch it back to Japanese.

Tool Information

DeveloperMazelingo
Release Date10/9/2026
Pricingfreemium