# 学习助手 vs Smart PDF Toolkit

The clearest difference is in-app purchases: Smart PDF Toolkit at none against 学习助手's 3. Smart PDF Toolkit also leads on update cadence (every 3 days vs every 5 weeks) and review sentiment (100% vs 88%). 学习助手's advantage is iOS requirement (8.0 vs 16.6). On price, ads and device support there is nothing between them.

Both are free to download. 学习助手 sells 3 one-off in-app purchases. Smart PDF Toolkit asks for nothing beyond the download.

学习助手 ships an update every 5 weeks, Smart PDF Toolkit every 3 days. The most recent releases landed on October 19, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | 学习助手 | Smart PDF Toolkit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/id977507236/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 87.5% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 20 MB | 9 MB |
| Requires iOS | **8.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [JunFeng Li](https://appshunter.io/developer/977507235) | [Neeshu Kumar](https://appshunter.io/developer/1822449761) |

## What reviewers say

### 学习助手

[App page](https://appshunter.io/ios/app/id977507236)

This app helps you schedule study sessions and reviews based on the Ebbinghaus forgetting curve. It reminds you when to review material for maximum memory retention. Features include task management, personalized review intervals, and a Pomodoro timer for focused study.

**Highlights:** Study task scheduling, Automated review reminders, Personalized review intervals, Attachment support, Pomodoro timer, Single task management

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 附件功能 | $0.99 | one-time |
| 倒计时功能 | $0.99 | one-time |
| 番茄倒计时 | $0.99 | one-time |


### Smart PDF Toolkit

[App page](https://appshunter.io/ios/app/smart-pdf-toolkit/id6747693832)

This app allows you to open, read, and manage PDF documents offline. It offers features like bookmarks, file renaming, and dark mode for a comfortable and efficient reading experience without needing an internet connection.

**Highlights:** Offline PDF management, Bookmarking, File renaming, Dark mode, Fast and secure, Lightweight viewer

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 学习助手 free?

学习助手 is free to download, with in-app purchases available.

### Is Smart PDF Toolkit free?

Smart PDF Toolkit is free to download, with no in-app purchases.

### Do 学习助手 or Smart PDF Toolkit have ads?

Neither 学习助手 nor Smart PDF Toolkit shows ads.

### Which is updated more often, 学习助手 or Smart PDF Toolkit?

学习助手 ships an update every 5 weeks, and Smart PDF Toolkit every 3 days. Most recently, 学习助手 was updated on October 19, 2026 and Smart PDF Toolkit on October 17, 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.*