# Stardust 英会話 vs Keep Up

The clearest difference is ads: Stardust 英会話 at none against Keep Up's shown. Keep Up's advantage is update cadence (every 3 days vs weekly) and iOS requirement (14.0.0 vs 16.1). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Stardust 英会話 sells 1 one-off in-app purchase and Keep Up sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Stardust 英会話 ships an update weekly, Keep Up every 3 days. The most recent releases landed on October 15, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Stardust 英会話 | Keep Up |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 49 MB | 125 MB |
| Requires iOS | 16.1 | **14.0.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shuto Goto](https://appshunter.io/developer/1558406144) | [keiji yamamoto](https://appshunter.io/developer/6778795740) |

## What reviewers say

### Stardust 英会話

[App page](https://appshunter.io/ios/app/stardust/id6470121854)

Learn natural, everyday English phrases that are commonly used by native speakers but not typically taught in schools. Overcome the frustration of not understanding simple words due to idiomatic expressions and gain confidence in your conversational skills.

**Highlights:** Learn native English phrases, Master idiomatic expressions, Improve daily conversation, Gain speaking confidence, Understand natural speech

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 全ての機能を使用可能 | $6.99 | one-time |


### Keep Up

[App page](https://appshunter.io/ios/app/keep-up/id6778795738)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Keep Up Premium | $1.99 | per month |


## Frequently asked questions

### Is Stardust 英会話 free?

Stardust 英会話 is free to download, with in-app purchases available.

### Is Keep Up free?

Keep Up is free to download, with in-app purchases available.

### Do Stardust 英会話 or Keep Up have ads?

Keep Up shows ads; Stardust 英会話 does not.

### Which is updated more often, Stardust 英会話 or Keep Up?

Stardust 英会話 ships an update weekly, and Keep Up every 3 days. Most recently, Stardust 英会話 was updated on October 15, 2026 and Keep Up on October 8, 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.*