Comparison

Peter Rabbit (ピーターラビット) vs Addition Algorithm

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

Head to head
About

Peter Rabbit (ピーターラビット)

Features
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Hop into Japanese with the timeless adventures of Peter Rabbit! This app offers a side-by-side bilingual reading experience with Japanese and English translations, specifically designed to help language learners acquire natural vocabulary and understand Japanese sentence structure in a classic literary context. Follow Peter into Mr. McGregor's garden while you practice your reading and listening skills. Perfect for JLPT N5-N4 learners, this reader bridges the gap between basic textbooks and authentic Japanese children's literature, complete with furigana and romaji.

About

Addition Algorithm

Features
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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.

Screenshots

Peter Rabbit (ピーターラビット)4 screens
Addition Algorithm4 screens

Verdict

The call

The clearest difference is update cadence: Addition Algorithm at every 6 days against Peter Rabbit (ピーターラビット)'s every 4 months. Addition Algorithm also leads on iOS requirement (16.0 vs 18.2). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Peter Rabbit (ピーターラビット) ships an update every 4 months, Addition Algorithm every 6 days. The most recent releases landed on October 8, 2026 and October 16, 2026 respectively.

Scorecard2 real differences · 4 level
Peter Rabbit (ピーターラビット) versus Addition Algorithm: the parameters behind the verdict, then further details
ParameterPeter Rabbit (ピーターラビット)Addition Algorithm
PriceFreeFree
Update frequencyEvery 4 monthsEvery 6 days — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.216.0 — better
Further details — not scored
Size153 MB56 MB
Age rating4+4+
DeveloperJeffrey DickJASON A RIGBY

In-app purchases

None

Peter Rabbit (ピーターラビット)

No in-app purchases

None

Addition Algorithm

No in-app purchases

Questions

Is Peter Rabbit (ピーターラビット) free?
Peter Rabbit (ピーターラビット) is free to download, with no in-app purchases.
Is Addition Algorithm free?
Addition Algorithm is free to download, with no in-app purchases.
Do Peter Rabbit (ピーターラビット) or Addition Algorithm have ads?
Neither Peter Rabbit (ピーターラビット) nor Addition Algorithm shows ads.
Which is updated more often, Peter Rabbit (ピーターラビット) or Addition Algorithm?
Peter Rabbit (ピーターラビット) ships an update every 4 months, and Addition Algorithm every 6 days. Most recently, Peter Rabbit (ピーターラビット) was updated on October 8, 2026 and Addition Algorithm on October 16, 2026.

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