# Kernel 背單字 vs Handy 990

The clearest difference is ads: Handy 990 at none against Kernel 背單字's shown. Handy 990 also leads on update cadence (daily vs weekly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Kernel 背單字 ships an update weekly, Handy 990 daily. The most recent releases landed on September 19, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Kernel 背單字 | Handy 990 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/handy-990/id6776127243/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Daily** |
| Monetization | — | Free |
| Size | 63 MB | 414 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Egan Bisma](https://appshunter.io/developer/1882424495) | [Seaberry Studio](https://appshunter.io/developer/308519884) |

## What reviewers say

### Kernel 背單字

[App page](https://appshunter.io/ios/app/kernel/id6760036064)

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

**In-app purchases:** none


### Handy 990

[App page](https://appshunter.io/ios/app/handy-990/id6776127243)

Prepare for the TOEIC Listening and Reading test with focused practice sessions. This app offers part-based drills, timed mock tests, and detailed review of missed questions to help you improve your scores. Designed for convenient daily study, it fits into your routine while supporting comprehensive mock-test practice.

**Highlights:** TOEIC reading and listening practice, Part-based drills, Timed mock-test mode, Review missed questions, Score summaries and analytics, Multilingual explanations

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Kernel 背單字 free?

Kernel 背單字 is free to download, with no in-app purchases.

### Is Handy 990 free?

Handy 990 is free to download, with no in-app purchases.

### Do Kernel 背單字 or Handy 990 have ads?

Kernel 背單字 shows ads; Handy 990 does not.

### Which is updated more often, Kernel 背單字 or Handy 990?

Kernel 背單字 ships an update weekly, and Handy 990 daily. Most recently, Kernel 背單字 was updated on September 19, 2026 and Handy 990 on September 20, 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.*