# Ebbing: Spaced Repetition — Forgetting Curve Study Planner

> Forgetting Curve Study Planner (iPhone/iPad app by Munehito Kamura.)

- Source: https://appshunter.io/ios/app/ebbing-spaced-repetition/id6753039952 (this page in markdown: same URL + `.md`)
- Developer: [Munehito Kamura](https://appshunter.io/developer/1774708619)
- Category: Education, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.0 · 28 MB
- Languages: American English, Japanese
- Released: 2025-10-08
- Data updated: 2026-10-08

## What is Ebbing?

Ebbing is a study app that keeps a record of what you've studied and tells you the best time to review it, based on the forgetting curve.

Just log your daily study in a simple interface, and Ebbing builds your review schedule automatically.
You can see at a glance what to review, and when.

No more wasting time on unplanned studying.
Ebbing helps what you learn stick.

◇ Key Features

• Log what you study, and get a review schedule generated automatically from the forgetting curve
• A Home screen that shows today's reviews at a glance
• A calendar to see and adjust all your upcoming reviews
• Statistics: estimated retention rate, a study heatmap, and your study streak (Ebbing Plus)
• Custom review intervals (Ebbing Plus)
• Schedule editing — drag a review to a new date, and shift the reviews after it along with it (Ebbing Plus)
• Review reminder notifications
• Guide articles on evidence-based study methods

◇ Made For

• Planning your study for certification exams and entrance exams
• Vocabulary review cycles in language learning
• Anyone who wants new knowledge to really stick
• Anyone who wants to review efficiently, before they forget

◇ How It Works

Ebbing is built on the "forgetting curve," first described by the psychologist Hermann Ebbinghaus.
It models how people forget, and helps strengthen memory by spacing your reviews at appropriate intervals.
The retention rate shown in the app is an estimate based on this model, not a measurement.

◇ Ebbing Plus (optional auto-renewable subscription)

Ebbing Plus removes the limit on the number of materials and unlocks custom review intervals, schedule editing, and statistics.
Monthly and yearly plans are available, and the price is shown on the purchase screen. You can cancel your subscription anytime in your App Store account settings.

Terms of Use: https://ebbing-app.web.app/en/terms.html
Privacy Policy: https://ebbing-app.web.app/en/privacy.html

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Ebbing Plus（月額） | $2.99 | per month |
| Ebbing Plus（年額） | $29.99 | per year |


## Is Ebbing safe?

Not enough ratings yet to assess Ebbing.

## Is Ebbing legit?

Ebbing: Spaced Repetition appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Ebbing is 73 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 2.6.0 — 2026-10-07

• New Home Screen widgets: choose "Reviews Left" or "Today's Reviews."
• If notifications are off, the app now shows how to turn them on in Settings.
• On days with nothing scheduled, Home now shows "—" instead of 0 for reviews left.

### 2.5.0 — 2026-10-06

• Ebbing is now available in English.
• Bug fixes and stability improvements.

### 2.4.1 — 2026-10-05

・復習リマインダーの通知を見直しました。毎日同じ内容がくり返し届くのをやめ、予定のある数日ぶんをお届けします。しばらく復習が空いたときは、再開のお知らせを 1 回だけお送りします。
・しばらく間が空いたあとにアプリを開くと、ホームから「今日の 1 件」で復習を再開できるようになりました。
・初回の案内で通知をスキップした場合、最初に学習範囲を登録したあとで通知の許可をおたずねするようにしました。
・細かな不具合の修正と安定性の改善

### 2.4.0 — 2026-10-04

・Ebbing Plus を購入すると、購入前にしようとしていた操作（教材の追加やスケジュールの編集など）をそのまま続けられるようになりました。
・復習プリセット（自分で作った復習間隔）が、同じアカウントのほかの端末にも同期されるようになりました。
・細かな不具合の修正と安定性の改善

### 2.3.1 — 2026-10-02

・Ebbing Plus の期間が終了したあとの教材の扱いを整理しました。4 つ目以降の教材も、これまでの復習はそのまま続けられます（新しい学習範囲の追加には Ebbing Plus が必要です）。
・細かな不具合の修正と安定性の改善

## Apps similar to Ebbing

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [おまかせエビングハウスくん](https://appshunter.io/ios/app/id6741511552) | — | Free | Education |
| [TacticalStudy](https://appshunter.io/ios/app/tacticalstudy/id6757744235) | — | Free | Education |
| [最強の勉強分析・記録SNS - StudyLegends](https://appshunter.io/ios/app/sns-studylegends/id6446177398) | — | Free | Education |
| [Kiokuma: Handwritten Flashcard](https://appshunter.io/ios/app/kiokuma-handwritten-flashcard/id6759291179) | 4.0 (2) | Free | Education |
| [勉強計画と復習管理 - 勉強記録・勉強時間グラフ](https://appshunter.io/ios/app/id1640394074) | — | Free | Education |
| [Forgetting Curve Reminder](https://appshunter.io/ios/app/forgetting-curve-reminder/id6760619904) | — | $1.99 | Education |

## More apps by Munehito Kamura

- [AuthenPick](https://appshunter.io/ios/app/authenpick/id6737124758)
- [トクカレ - 毎日お得なカレンダー](https://appshunter.io/ios/app/id6761998668)
- [cycl - 筋トレ部位の回復管理](https://appshunter.io/ios/app/cycl/id6783676297)

All apps by Munehito Kamura: https://appshunter.io/developer/1774708619

## Related topics

[ebbinghaus](https://appshunter.io/ios/topics/ebbinghaus)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-08.*