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.
Peter Rabbit (ピーターラビット)
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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.
Addition Algorithm
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
| Parameter | Peter Rabbit (ピーターラビット) | Addition Algorithm |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 months | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.2 | 16.0 — better |
| Further details — not scored | ||
| Size | 153 MB | 56 MB |
| Age rating | 4+ | 4+ |
| Developer | Jeffrey Dick | JASON A RIGBY |
In-app purchases
Peter Rabbit (ピーターラビット)
No in-app purchases
Addition Algorithm
No in-app purchases
Questions
Is Peter Rabbit (ピーターラビット) free?
Is Addition Algorithm free?
Do Peter Rabbit (ピーターラビット) or Addition Algorithm have ads?
Which is updated more often, Peter Rabbit (ピーターラビット) or Addition Algorithm?
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