The best alternatives to SpellUp are Bionic Reading® , Wordex, and Readapt. If these 3 options don't work for you, we've listed a few more alternatives below.
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Hurree— The smarter, simpler way to analyze your data
What would you do if you can read one book per day? Read all the books? Become the master at anything? We found a solution! Speed reading now is not a dream! Try yourself, up to 5000 words per minute. Free to use!
Designed for those with reading challenges like dyslexia and poor vision. With Readapt, you can customise your reading preferences and adapt text (English or French) on websites and Word documents to suit your reading comfort and preferences.
An opinionated take on what should be a simple, minimal, but efficient reading app, for people who declared Pocket/Instapaper bankruptcy. It only shows the first article in your queue, forces you to decide whether to read or archive the pages you saved, one at a time, and encourages you to let go of the old articles you procrastinate reading.
Bionize can have a great impact on your reading speed and efficiency by helping you focus on the parts of words that matter most through the power of Bionic Reading.
Riffle is a method of facilitating reading by adding artificial fixation points to the text to guide the eyes through. It is based on the concept of "Bionic Reading.".