About Tachi
Last updated November 13, 2026
Tachi is a free speed-reading trainer that runs in your browser. It has 9 short eye and perception drills and an RSVP reader that shows your own texts one word or phrase at a time. It needs no account, shows no ads and works in 29 languages. An iPhone app is in development and has not been released yet.
Who makes Tachi
Tachi is designed, built and run by Emin Berkay Dağlar, an independent solo developer based in Türkiye. Tachi has no advertisers and no sponsored content. Support email goes straight to the developer: support@tachiapp.com.
Why it exists
Most speed-reading products promise to double or triple your reading speed. The research does not support that: reading much faster than your normal pace costs comprehension. Tachi is built around what holds up: paced practice with your own material, short drills you can measure yourself on, and honest notes about what each one can and cannot do. The How Tachi works page explains the method and the evidence behind it.
Editorial standards
The Learn guides, the FAQ, the glossary and the reading speed test are published by Tachi and follow the same rules:
- Sources are listed.Factual claims are backed by the studies, reviews or reference works named in each page's Sources section, with links, preferring peer-reviewed research and primary sources.
- Weak evidence is called weak.Where research is thin, mixed or missing, the page says so, including about Tachi's own drills.
- No inflated promises. No page claims you will read several times faster with full comprehension, and none quotes testimonials, ratings or user numbers.
- Dates are real. Each guide shows when it was published and, if it has changed since, when it was last updated. A date only changes when the content does.
- Tachi is mentioned where it is relevant. Guides link to a free drill that practises the topic. Nothing is sponsored and there are no affiliate links.
- Corrections are welcome. If you find an error or a better source, email support@tachiapp.com and the page will be fixed and its date updated.
The guides are written in English; the app itself and the drill pages are translated.
Privacy
What you read stays in your browser: texts, library, settings and progress are stored on your device and are never uploaded. The site sends anonymous, cookieless usage statistics and crash reports that never contain what you read, and you can switch both off in Settings. They are not loaded at all when your browser sends Do Not Track or Global Privacy Control. The privacy policy has the details.
Contact
Questions, bug reports, feature requests and corrections: support@tachiapp.com. See also Support and the terms of use.