Simplex Spelling improves English spelling and reading skills in a fun and interactive way by combining a unique “reverse phonics” approach with contextually relevant spelling rules that explain why words are spelled in a particular manner. It works like a personal spelling coach with every word.

Simplex Spelling HD teaches the Dolch sight words to establish a base foundation in spelling and reading fluency.
Please check out the word lists on our website before purchasing to ensure they meet your learning requirements

Rather than using flash cards, Simplex Spelling enables the student to build each word. Students gain skills above and beyond the sheer memorization of words.

Simplex Spelling is great tool to have for kids learning to spell and read, remedial students, or those learning English as a second language.

Recommended for ages 5+.
Note: You can not create your own spelling lists in Simplex Spelling HD.

- All of the more than 300 Dolch Sight words to help build literacy.
- Words are spoken and used in a sentence to establish context.
- Introduction seamlessly leads a student through the application’s features by providing spoken information while having the student spell new words.
- Powerful phonics hint feature sounds out each word and provides a list of possible phonograms for each sound.
- A full “reverse phonics” approach that includes sounds made by all the different letter combinations.
- Contextually relevant spelling rule hints that help explain “how to spell” English words.
- Unique letter by letter feedback system that provides immediate feedback.
- Guaranteed success on every word.
- Support for multiple user accounts.
- User stats screen that allows you to see words that have been mastered and words that require further practice.
- Export & email student progress reports.
- Remembers each user’s position and progress.
- Supports both upper and lower case letters.
- Supports both alphabetic and QWERTY keyboard layouts.
- Supports both US, UK and Canadian English spelling.
- An approach that appeals to audio, visual and tactile learners.

- Placed 2nd in the 2011 Best App Ever Awards
- TheiPhoneMom Approved - 'If "tremendous" was a Dolch sight word then you would find it in Simplex Spelling HD and it would be right at home because this is a tremendous spelling app!'
- AppsforHomeschooling (earned 5/5 and a Golden App award) - "Simplex Spelling HD uses incredibly rich, educationally sound, and powerful tools to teach high frequency words."
- "Applicable2U has explored a number of spelling applications, and this is the best one yet."
- Technology in (Spl) Education - "Simplex Spelling – If you have Spelling Goals in your IEP, then this [is] the app for you."
- Kids Apps Awards (earned 5/5 and an Education Award)
- BestAppsForKids (4.5/5 editors choice) "one of the best spelling apps (maybe the best) in the app store at the moment."
- Mobile iEducator (4.5/5)
- Muslim Friendly Apps (Rated a Gold Apple)
- CrazyMikesApps (4.5/5)
- iPadAppsReviewer (4.5/5)
- The Daily App Show Featured App - “If you are looking for a great spelling app, feature packed for your iPad, Simplex Spelling HD is your app.”
- PadGadget Recommended (4/5)
- CommonSenseMedia (4/5)
- Lunchbox Reviews (5/5)
- Featured by Apple in "New & Noteworthy", "What's Hot" and "Grammar & Vocabulary"
- Editor's Pick Best10Apps

Privacy Disclosure:
- Does not contain 3rd party ads
- Does not share any data
- Does not contain In-App purchases
- Does not link to social media
- Contains in app links to view a safe enclosed version of the developer's website for additional information, support and teaching tips.
- Contains links to "email the developer questions" and rate the app

COPPA Compliant

What's New

Version 3.6.1

Updated for iOS 11.

Ratings and Reviews

Spoken instruction


This app uses lots of speech so that even kids who are just starting to read can follow the instructions.

Awesome spelling app


This is a great spelling app. It's very engaging and my son is thrilled when he masters a word. It was definitely money well spent.

Uses Phonics!

What We Liked:

As a homeschooling mom I absolutely adore developers who build in multiple user functions, tracking, and the ability to start up again where you’ve left off after a session. Simplex Spelling not only has all of these built in but it also makes it easy to review missed words without having to re-start a spelling list.

The use of phonics is both intuitive and a bit playful – it is fun for my daughter to be able to explore the different potential options for a certain sound using the hints feature. Even though the design is heavy on functionality (and functional it is) and low on ‘splash’ my daughter does enjoy using this app for her spelling lessons as we’ve been testing it out together.
The method used – dictation followed by tapping and dragging of letters into the correct order within a word – is incredibly effective at teaching spelling and the combination of the easily accessed phonics hints makes Simplex Spelling a very powerful tool for direct instruction. It is very easy for children to learn directly from the app without parental input beyond assigning a spelling list for each session or asking them to review a certain list. The detailed statistics make it very easy for me to determine the work my daughter should be doing each day. Among the many useful settings options (upper case, lower case – use words in a sentence or only alone etc.) there is an option to choose Canadian and American spelling! We are Canadians so I truly appreciate that option.

What We Didn’t Like:



I am used to having phonetic spelling programs tackle groups of similar words at one time (all cvce words at once for example – ride, like, hide etc.) Simplex Spelling uses a different approach and scatters these words throughout their lists. I have to admit that the approach we’ve been using IS a slower approach to learning to spell and I have often found our progress somewhat tedious. I have been longing for something we could use as a supplement to teach high frequency words, but everything else seems to be sight-based. Because Simplex focuses on learning high frequency words quickly in order to attain fluency, I think a pairing of this app with a more regularly phonetically grouped spelling program gives the best of both worlds – that’s what we’ll be doing!

Simplex Spelling HD uses incredibly rich, educationally sound, and powerful tools to teach high frequency words. With 220 words included and the wealth of tracking tools it provides, it is well worth the price. I hope that we can look forward to additional releases with words of more complexity provided for older students!

Disclosure: I received a promo code of this app to review - all opinions are my own.


Pyxwise Software Inc.
140.9 MB
Requires iOS 6.0 or later. Compatible with iPhone, iPad and iPod touch.
Age Rating
Rated 4+
© 2011 Pyxwise Software Inc.


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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