# Forgetting Curve Reminder vs Study Penguin

The clearest difference is price: Study Penguin at Free against Forgetting Curve Reminder's $1.99. Study Penguin also leads on update cadence (daily vs every 3 weeks) and device support (3 vs 1). On ads and in-app purchases there is nothing between them.

Study Penguin is free to download; Forgetting Curve Reminder costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Forgetting Curve Reminder ships an update every 3 weeks, Study Penguin daily. The most recent releases landed on October 12, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Forgetting Curve Reminder | Study Penguin |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | 87.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Daily** |
| Monetization | Paid | — |
| Size | 3 MB | 38 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Manabi Mate LLC](https://appshunter.io/developer/1817627045) | [Rei Minamida](https://appshunter.io/developer/6779070914) |

## What reviewers say

### Forgetting Curve Reminder

[App page](https://appshunter.io/ios/app/forgetting-curve-reminder/id6760619904)

This app helps you remember what you learn by scheduling reviews based on the Ebbinghaus forgetting curve. Create study items, receive timely reminders, and track your progress with ease. All your data is stored locally for enhanced privacy.

**Highlights:** Scientific review scheduling, Local reminders, Progress tracking, One-tap completion, Review history, Customizable intervals

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Study Penguin

[App page](https://appshunter.io/ios/app/study-penguin/id6779070912)

**In-app purchases:** none


## Frequently asked questions

### Is Forgetting Curve Reminder free?

Forgetting Curve Reminder costs $1.99, with no in-app purchases.

### Is Study Penguin free?

Study Penguin is free to download, with no in-app purchases.

### Do Forgetting Curve Reminder or Study Penguin have ads?

Neither Forgetting Curve Reminder nor Study Penguin shows ads.

### Which is updated more often, Forgetting Curve Reminder or Study Penguin?

Forgetting Curve Reminder ships an update every 3 weeks, and Study Penguin daily. Most recently, Forgetting Curve Reminder was updated on October 12, 2026 and Study Penguin on October 2, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*