Comparison

Rewordy vs 記憶KEEPER

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

Head to head
About

Rewordy

This vocabulary learning app uses regular reminders and flashcards to help you memorize new words. Organize your vocabulary with tags and favorites, and even review words at a glance with home screen widgets. Import words manually, via image, or CSV, and get AI-generated details for deeper understanding.

Highlights
  • Regular word reminders
  • Intuitive flashcards
  • Word organization with tags
  • Home screen widgets
  • Flexible word import (manual, image, CSV)
  • AI-generated word details and examples
Features
Read full description

Learn Words Effectively in Your Spare Time Even if you’re busy, words stick better when you encounter them regularly. Rewordy is a vocabulary learning app that combines a word list with reminders, helping you make the most of small moments throughout your day. ------------------------------ Key Features - Regular Reminders : Get notified at intervals to naturally review words - Flashcards : Simple, intuitive cards for quick memorization - Tags & Favorites : Organize words by category and priority - Home Screen Widgets : Check words at a glance without opening the app - Flexible Word Import - Manual entry - Image import with text extraction - CSV file import - AI-Powered Word Details - Generate related words and example sentences using AI - Note: Generated content may vary in accuracy and expression. ------ Turn commute time, short breaks, and waiting moments into opportunities to learn. Rewordy helps you build vocabulary consistently—without pressure.

About

記憶KEEPER

Features
Read full description

「いつ復習すればいいか分からない」「問題集を何周もしているのに身につかない」——記憶KEEPERは、忘却曲線にもとづく間隔反復で、資格勉強の“復習タイミング”を自動で管理するアプリです。 【特長】 ・問題番号を登録するだけ。カードを一から作る手間はありません。 ・「今日復習すべき問題」を毎日提示し、勉強の偏りを防ぎます。 ・苦手な問題だけを集中して復習できる「苦手対策」。 ・教材→章→節で整理でき、複数の資格を並行して管理できます。 ・広告なし・余計な通知なし。 【こんな方に】 宅建士・FP・簿記・施工管理技士・行政書士・社労士など、自分の問題集で暗記を進めたい資格受験者の方へ。 今なら無料でご利用いただけます。

Screenshots

Rewordy4 screens
記憶KEEPER4 screens

Verdict

The call

The clearest difference is update cadence: 記憶KEEPER at every 3 days against Rewordy's every 3 months. 記憶KEEPER also leads on iOS requirement (15.0 vs 26.4). 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

Rewordy ships an update every 3 months, 記憶KEEPER every 3 days. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 8 level
Rewordy versus 記憶KEEPER: the parameters behind the verdict, then further details
ParameterRewordy記憶KEEPER
PriceFreeFree
Rating3.3 (3 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings3 — better—
Update frequencyEvery 3 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhoneiPhone, iPod — better
Requires iOS26.415.0 — better
Further details — not scored
Size31 MB4 MB
Age rating4+4+
DeveloperShota Itonao watanabe

In-app purchases

None

Rewordy

No in-app purchases

None

記憶KEEPER

No in-app purchases

Questions

Is Rewordy free?
Rewordy is free to download, with no in-app purchases.
Is 記憶KEEPER free?
記憶KEEPER is free to download, with no in-app purchases.
Do Rewordy or 記憶KEEPER have ads?
Neither Rewordy nor 記憶KEEPER shows ads.
Which is updated more often, Rewordy or 記憶KEEPER?
Rewordy ships an update every 3 months, and 記憶KEEPER every 3 days. Most recently, Rewordy was updated on October 14, 2026 and 記憶KEEPER on October 7, 2026.

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