# Jiffy Reader — Bionic reading extension > Browser extension for Bionic Reading to improve reading speed and focus. (iPhone/iPad app by Ansh Nanda.) - Source: https://appshunter.io/ios/app/jiffy-reader/id6444754311 (this page in markdown: same URL + `.md`) - Developer: [Ansh Nanda](https://appshunter.io/developer/1571999007) - Category: Utilities, Books - Price: Free - Rating: 3.62/5 from 13 App Store ratings · 12 written reviews indexed - Age rating: 4+ - Requires: iOS 15.0 · 1 MB - Languages: English - Released: 2022-11-30 - Data updated: 2026-06-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/jiffy-reader/id6444754311/reviews.md ## What is Jiffy Reader? Jiffy Reader is an extension that allows for Bionic Reading on any website! Jiffy Reader uses Bionic Reading to help you to read faster, better, easier and with more incredible focus than ever before. Jiffy Reader creates focus points based on the principles of Bionic Reading that guide your eyes and make it easier to glide through text. The focus points are created by manipulating font weights, opacity and color. With Jiffy Reader you customize how the text is manipulated to create focus points. Jiffy Reader's goals are to make reading, fun, comfortable and easy while reading. Basically, we want you to have the best Bionic Reading experience possible when compared to other Bionic Reader extensions. We have received lots of love and support from many people some of whom have expressed how Jiffy Readers helps improve their reading and focus with ADHD and academic work. We hope that by using the Jiffy Reader extension you too will be able to read large amounts of text faster, more easily, with greater comprehension and focus. Features: #### Global preferences button - clicking this button enters global mode where your preferences are saved and applied to applied to all other sites when you open them afterwards #### Site preferences button - Clicking this buttons activates and saves preferences only for the site you are presently on. - Any changes you make with the other buttons and sliders persist for only this site. #### Enable reading mode button - Click this button to turn on/off bolded text on the page. - Press `ALT + B` to achieve the same effect as clicking this button on chrome. see the [shortcut-section](#shortcut) for more info. #### Saccades interval slider - Use this slider to set how many words are left untouched/unbolded or un-emphasized after the first emphasized word or the first word. - 0 means there will not be a single or any untouched words, all words are emphasized. - 1 means exactly 1 word is left untouched before the next successive emphasized word. - 2 means 2 words are left untouched so does 3 and 4. #### Fixation strength slider - Use this to control how much or how little of each word is emphasized you your liking . #### Fixation edge opacity - Use this to control how faint(weakly visible) or strongly visible you want the edge(un-emphasized) part of words to appear. #### Saccades colors - Use this to select a means of emphasization using colors. #### Saccades styles - Use this to select a means of emphasization using bold variations or underline variations. #### Line height buttons - Use these buttons to increase or decrease line height to strain and improve the confort of reading. #### Always on/off button - Use this button to controls the default behaviour which is if words on pages are or aren't emphasized when loaded by default. #### Reset Defaults - Resets preferences of the currently engaged preference mode. #### Google Play Books Native (Epub and PDF support) - This extension works with [google play books](https://play.google.com/books) 1. Open or navigate to [google play books](https://play.google.com/books) 2. Click on any book in your library to read it and turn on the extension if not on already 3. You can search for new books (paid or free) and add to your library to start reading See detailed change log on github https://github.com/ansh/jiffyreader.com/releases/latest ## Key features - Bionic Reading customization - Global and site-specific preferences - Adjustable fixation strength and saccades interval - Color and style emphasis options - Line height adjustment - Always on/off toggle - Reset to defaults ## Recent user reviews (10 of 12) All indexed reviews: https://appshunter.io/ios/app/jiffy-reader/id6444754311/reviews.md ### 5/5 — Very useful for adhder *2024-06-11* Glad to find a free app! Good extension for safari. ### 5/5 — This makes me read so much faster *2023-10-04* for the first time in my life I can read really fast and comprehend what I am reading. ### 2/5 — Needs work *2023-08-29* This seems like a good idea in the beginning, but it requires several steps to really get it set up and isn't really a good fit for safari. ### 1/5 — Nothing useful in iOS. *2023-08-20* The app only tries to hook into safari, not even iBooks, but i use other browsers. The activation in safari fails and offers a link for feedback but that too fails. ### 1/5 — “Always off” *2023-08-20* Disappointed that no matter what setting I try on my phone, the jiffy reader is always “off”. Also disappointed to see that “ this project is no longer supported,” so I know this feedback won’t be acknowledgment. Such a great concept but, based on other similar app success (lack of), it seems like a challenging concept to get right. ### 5/5 — Works flawlessly *2023-07-24* This bionic reading extension for Safari works flawlessly as of 7/24/2023. You get to fully customize your reading experience by changing saccades interval, fixations stregth, opacity, and even accent color. A must have for skimming through academic papers. ### 1/5 — Was hoping for more *2023-07-11* I was really excitied about the potential for this app, however, it does not seem to be supported on safari truly. Even the instructions it taked you to upon first opening it doesn't mention Safari. ### 1/5 — Reads sensitive information *2023-06-12* In order to use the safari extension you need to give it access to read and write sensitive information such as passwords and credit card numbers. ### 5/5 — Game Changing Browser Extension! *2023-06-06* This extension has been life changing for me! It has allowed me to read a lot faster and more efficient in my browser. My only hope and suggestion is to push to have other browsers support this app so it can be used anywhere. ### 3/5 — Data privacy *2023-05-21* This application says it does not use your data on the app store, but if you look at the website, they are using google analytics to store whatever you utilize this for... it's a bit misleading ## Frequently asked questions about Jiffy Reader ### How does Jiffy Reader help with reading? Jiffy Reader uses Bionic Reading principles to create focus points by manipulating font weights, opacity, and color. This guides your eyes, making it easier to read faster, with better comprehension and focus. ### Can I customize Jiffy Reader's settings? Yes, Jiffy Reader offers extensive customization. You can adjust fixation strength, saccades interval, opacity, colors, styles, and line height to suit your reading preferences. ### Does Jiffy Reader work on all websites? Jiffy Reader is designed to work on any website. You can set global preferences that apply to all sites or configure specific settings for individual websites. ### Is Jiffy Reader suitable for users with ADHD? Many users have reported that Jiffy Reader helps improve their reading and focus, particularly for academic work and with ADHD. The focus points and customizable emphasis can aid concentration. ### What devices does Jiffy Reader support? Jiffy Reader is available for Mac, iPhone, and iPad, and iPod devices, allowing for a consistent reading experience across your Apple ecosystem. ### How often is Jiffy Reader updated? Jiffy Reader was last updated on December 2, 2022, with version 1.0. While specific update frequency isn't detailed, it has received recent updates. ### What is the user rating for Jiffy Reader? Jiffy Reader has a user rating of 3.6 stars based on 13 ratings, indicating a generally positive but mixed reception from its user base. ### Does Jiffy Reader have ads? The provided data does not indicate that Jiffy Reader contains advertisements. It is offered as a free utility. ## Version history (last 1 release) ### 1.0 — 2022-12-02 No release notes. ## Apps similar to Jiffy Reader | App | Rating | Price | Category | | --- | --- | --- | --- | | [Dark Mode for Safari: NightEye](https://appshunter.io/ios/app/dark-mode-for-safari-nighteye/id1450504903) | 4.2 (93) | Free | Utilities | | [X to Y](https://appshunter.io/ios/app/x-to-y/id1598259546) | 3.8 (19) | Free | Utilities | | [Lowkey - Smart Buzzer](https://appshunter.io/ios/app/lowkey-smart-buzzer/id1513284627) | 4.3 (38) | Free | Utilities | | [Cookie Blocker](https://appshunter.io/ios/app/cookie-blocker/id6446212408) | 4.2 (100) | Free | Utilities | | [Nitefall: Browser dark mode](https://appshunter.io/ios/app/nitefall-browser-dark-mode/id1575190591) | 3.9 (283) | Free | Utilities | | [Hearing Test - Ear Audiogram](https://appshunter.io/ios/app/hearing-test-ear-audiogram/id1666315573) | 4.4 (36) | Free | Utilities | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*