Comparison

Addition Algorithm vs Reading Fluency

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

Head to head
About

Addition Algorithm

Features
Read full description

No ads now or ever! Addition Algorithm – Rigby Maths is an interactive app that teaches and reinforces the standard written (column) addition algorithm. Learners build answers one column at a time—focusing on place value, accuracy, and the correct method—so they don’t just “get the answer”, they understand how the answer is made. Across five levels, the difficulty grows from first-time algorithm practice, to carrying (regrouping/renaming), to larger place values, adding three numbers, and finally working with decimals (tenths and hundredths). The app includes guided “Learn” tutorials and an on-demand help feature with clear voice prompts, plus optional visual supports like a carry helper overlay, tens frames, and visual dots to make the maths more concrete. Progress is tracked with a mastery percentage per level, and the question wording is customisable—choose whether the app says “add” or “plus”, and whether it uses “carrying”, “renaming”, or “regrouping” to match what learners hear in class. It’s useful for independent practice at home and structured practice in schools, giving students confidence with the algorithm while giving adults a simple way to see steady improvement over time.

About

Reading Fluency

Features
Read full description

Help your child become a confident reader. KidsRead turns daily reading into a measurable habit — kids read short, age-appropriate stories aloud while the app times them, calculates Words Per Minute (WPM), and checks understanding with a quick comprehension quiz. Built for elementary readers in Grades 1–3, KidsRead grows with your child. Every session ends with a clear score, encouragement, and the next best step — read again to beat your WPM, try a practice text to build speed, or take the quiz to prove you understood the story. WHY PARENTS LOVE KIDSREAD • Real fluency feedback — exact WPM, not guesswork • Comprehension quiz after every story — speed AND understanding matter • Practice texts suggested automatically when reading is slow • Multiple kid profiles, each with their own grade level • Beautiful, distraction-free interface designed for young readers • Parental gate protects settings and purchases HOW IT WORKS 1. Pick a story for your child's grade 2. Tap Start — read the story aloud 3. Tap Done — see WPM, evaluation, and unlock the quiz 4. Answer the comprehension questions 5. Track progress over time with the Stats tab WHAT'S INSIDE • Stories and practice texts tuned to Grades 1, 2, and 3 • Live timer with WPM calculated to the second • Three evaluation bands: Slow, Moderate, Very Good • Practice text recommendations to lift slow readers • Multiple-choice quizzes after each story • Quiz Report Card combining reading speed and comprehension • Statistics dashboard: Total Reading, Average WPM, Best WPM, Comprehension Rate • WPM Progress chart to celebrate improvement • Multiple child profiles with per-profile stats DESIGNED FOR KIDS, TRUSTED BY PARENTS KidsRead is built specifically for children. No ads, no third-party trackers, no chat features. Settings and purchases are protected by a simple parental math gate so kids stay focused on reading. PERFECT FOR • Daily at-home reading practice • Struggling readers building fluency • Confident readers chasing personal bests • Homeschool reading routines • Quick warmups before bed or school Start today and turn reading practice into something your child looks forward to. KidsRead makes every story count. Privacy Policy: https://kidsread.framer.website/privacy-policy Terms of Use / EULA: https://kidsread.framer.website/tems-of-use-eula

Screenshots

Addition Algorithm4 screens
Reading Fluency4 screens

Verdict

The call

The clearest difference is in-app purchases: Addition Algorithm at none against Reading Fluency's 4. On price, update cadence, ads and device support 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

Both are free to download. Reading Fluency sells 4 in-app purchases, starting at $2.99 per 7 days. Addition Algorithm asks for nothing beyond the download.

UpkeepUpdate frequency

Addition Algorithm ships an update every 6 days, Reading Fluency every 5 days. The most recent releases landed on October 1, 2026 and October 4, 2026 respectively.

Scorecard1 real difference · 5 level
Addition Algorithm versus Reading Fluency: the parameters behind the verdict, then further details
ParameterAddition AlgorithmReading Fluency
PriceFreeFree
Update frequencyEvery 6 daysEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better17.6
Further details — not scored
Size56 MB28 MB
Age rating4+4+
DeveloperJASON A RIGBYMehmet Demir

In-app purchases

None

Addition Algorithm

No in-app purchases

4 purchases

Reading Fluency

Subscriptions3
  • KidsRead Weekly3 Days trial$2.997 Days
  • KidsRead Monthly3 Days trial$6.991 Month
  • KidsRead Annual$24.991 Year
One-time1
  • KidsRead Lifetime Premium$34.99

Questions

Is Addition Algorithm free?
Addition Algorithm is free to download, with no in-app purchases.
Is Reading Fluency free?
Reading Fluency is free to download, with in-app purchases available.
Do Addition Algorithm or Reading Fluency have ads?
Neither Addition Algorithm nor Reading Fluency shows ads.
Which is updated more often, Addition Algorithm or Reading Fluency?
Addition Algorithm ships an update every 6 days, and Reading Fluency every 5 days. Most recently, Addition Algorithm was updated on October 1, 2026 and Reading Fluency on October 4, 2026.

Other comparisons