Comparison

Simplex Spelling Phonics 2 vs Math Invaders Arcade

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Simplex Spelling Phonics 2

This app scientifically improves spelling and reading skills using phonics, word patterns, and syllabication. It offers over 650 words across 54 lessons, breaking down words into syllables and sounds to build phonemic awareness.

Highlights
  • Scientifically validated approach
  • Phonics, word patterns, syllabication
  • Over 650 high-frequency words
  • 54 instructional lessons
  • Reverse phonics hint feature
  • Syllable breakdown (visual & auditory)
  • Progress tracking
Features
Read full description

Scientifically validated as a highly effective approach to improving spelling skills. A published study revealed that students demonstrated an average spelling improvement of 1.9 grades among children in a classroom setting who regularly used Simplex Spelling over a 18 week period. The largest student improvement observed over the same time period was 4.4 grade levels as assessed by administering the Schonell Spelling Test. Simplex Spelling is one of the best ways to improve English spelling and reading skills. Using a powerful combination of phonics lessons, spelling/word patterns, syllabication, our unique “reverse phonics” (phonics encoding) approach and contextually relevant spelling rules. - "Simplex Spelling has a feedback method that rivals anything a teacher can do in the classroom. " - Carolina Nugent, Director of Education KinderTown. - "No other literacy apps are this comprehensive." - Teachers With Apps - "WOW!!!! I found my miracle app" - Speech Language Neighborhood - Academics' Choice Award 

Teaching over a year of spelling curriculum with more than 650 high frequency words divided into 54 lists that are organized by spelling patterns and difficulty levels. Each of the 54 lists comes with a lesson that teaches one of the basic building blocks of spelling in the English language. These basic building blocks include syllables, sounds, spelling rules and some of the more advanced English phonograms. 

 Students learn a new concept for each lesson building on the skills learned from previous lessons and those covered in Simplex Spelling Phonics 1. Simplex Spelling Phonics 2 guides the student and acts as a personal spelling coach with every word, while teaching students "how to spell" English words. Our “reverse phonics” hint feature breaks each word down into individual phonemes to improve phonemic awareness, a critical skill in achieving literacy. One of the main areas of focus in Simplex Spelling Phonics 2 is on syllables and how they affect the way we speak, read and spell. Every word is broken down into its syllables both visually and auditorily to help students build phonological awareness skills. Many lessons teach the concepts of open and closed syllables, compound words, the rules governing vowels in syllables and syllable stresses. The stress on each syllable is subtly conveyed with every word to help students understand how the stress on a syllable affects the way words are pronounced and spelled. The schwa sound and its occurrence in English words is also taught.

 Recommended age 6+
 
Note: You can not create your own spelling lists.

 Features: 
 - Over 650 high frequency spelling words to help build literacy. - Words are spoken and used in a sentence to establish context and improve vocabulary. 
 - Introductory spelling list seamlessly leads a student through all of the application’s features.
 - A starting assessment/placement test. - Review lists to track learning progress. - 54 instructional lessons teach syllables, phonics, phonograms, and spelling rules. 
- A full “reverse phonics” approach that builds phonemic awareness. - Contextually relevant spelling rule hints that help explain “how to spell” English words.
 - Letter by letter feedback system provides feedback while the student is in the process of spelling each word. 
 - Support for 40 user accounts. - Export and email student progress reports. 
 
- Supports US, UK and Canadian English spelling of words.

 Privacy Disclosure: 
- Does not contain 3rd party ads 
 - Does not share any data 
 - Does not contain In-App purchases - Contains child protected links to "email the developer questions" and developer's website for additional information, support and teaching tips. COPPA Compliant https://pyxwise.com/privacy-policy/

About

Math Invaders Arcade

Features
Read full description

Math Invaders is an arcade-style math game for kids 5–10. Tap the invader with the correct answer — every right answer clears an invader from the sky and pushes you closer to Captain rank. WHAT'S INSIDE • Per-age difficulty — pick an age 5 through 10 and the maths and decoy answers adapt automatically. • Four operations — addition, subtraction, multiplication, division unlock as the player grows. • Ten levels — Mercury Drift, Venus Static, Earth Orbit, Mars Dust, Asteroid Belt, Jupiter Eye, Saturn Rings, Uranus Tilt, Neptune Deep, Pluto Edge. Each clear earns 1–3 stars. • 24 trophies — first-mission wins, skill milestones, math mastery, and a daily-streak bucket that rewards coming back. • Eight ship tiers and four weapons that unlock as you progress. • Extras — four background themes and four bullet trails earned through play. • Parents Dashboard — review session-by-session stats, accuracy by operation, and trouble-spot questions. DESIGNED FOR KIDS • No third-party analytics or behavioural ads. • No social-media links inside the game. • All progress is stored on the device — nothing is uploaded. MATH INVADERS PRO (OPTIONAL) The first levels are free forever. Math Invaders Pro — an optional $2.99/month auto-renewable subscription — unlocks every level, weapon, ship and cosmetic. Cancel anytime in Settings. No ads, no tracking, no third-party data sharing. CONTACT contact@mathsapps.com mathsapps.com/privacy

Screenshots

Simplex Spelling Phonics 24 screens
Math Invaders Arcade4 screens

Verdict

The call

The clearest difference is price: Math Invaders Arcade at Free against Simplex Spelling Phonics 2's $4.99. Math Invaders Arcade also leads on update cadence (every 4 days vs every 15 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Math Invaders Arcade is free to download; Simplex Spelling Phonics 2 costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Simplex Spelling Phonics 2 ships an update every 15 months, Math Invaders Arcade every 4 days. The most recent releases landed on October 7, 2026 and October 1, 2026 respectively.

Scorecard2 real differences · 8 level
Simplex Spelling Phonics 2 versus Math Invaders Arcade: the parameters behind the verdict, then further details
ParameterSimplex Spelling Phonics 2Math Invaders Arcade
Price$4.99Free — better
Rating3.6 (8 ratings) — better—
Positive reviews65.0% of reviews—
Number of ratings8 — better—
Update frequencyEvery 15 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.013.0 — better
Further details — not scored
Size203 MB29 MB
Age rating4+4+
DeveloperPyxwise Software Inc.MATH APPS

In-app purchases

None

Simplex Spelling Phonics 2

No in-app purchases

None

Math Invaders Arcade

No in-app purchases

Questions

Is Simplex Spelling Phonics 2 free?
Simplex Spelling Phonics 2 costs $4.99, with no in-app purchases.
Is Math Invaders Arcade free?
Math Invaders Arcade is free to download, with no in-app purchases.
Do Simplex Spelling Phonics 2 or Math Invaders Arcade have ads?
Neither Simplex Spelling Phonics 2 nor Math Invaders Arcade shows ads.
Which is updated more often, Simplex Spelling Phonics 2 or Math Invaders Arcade?
Simplex Spelling Phonics 2 ships an update every 15 months, and Math Invaders Arcade every 4 days. Most recently, Simplex Spelling Phonics 2 was updated on October 7, 2026 and Math Invaders Arcade on October 1, 2026.

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