# 随课背单词 vs InstantSpeech

The clearest difference is in-app purchases: 随课背单词 at none against InstantSpeech's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. InstantSpeech sells 1 in-app purchase, starting at $1.99 per month. 随课背单词 asks for nothing beyond the download.

随课背单词 ships an update every 4 days, InstantSpeech weekly. Both last shipped on October 31, 2026.

## The numbers

| Metric | 随课背单词 | InstantSpeech |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/id6792474434/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Weekly |
| Size | 19 MB | 7 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [涛 石](https://appshunter.io/developer/6789923285) | [博宇 徐](https://appshunter.io/developer/1861990764) |

## What reviewers say

### 随课背单词

[App page](https://appshunter.io/ios/app/id6792474434)

**In-app purchases:** none


### InstantSpeech

[App page](https://appshunter.io/ios/app/instantspeech/id6797420947)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |


## Frequently asked questions

### Is 随课背单词 free?

随课背单词 is free to download, with no in-app purchases.

### Is InstantSpeech free?

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

### Do 随课背单词 or InstantSpeech have ads?

Neither 随课背单词 nor InstantSpeech shows ads.

### Which is updated more often, 随课背单词 or InstantSpeech?

随课背单词 ships an update every 4 days, and InstantSpeech weekly. Most recently, 随课背单词 was updated on October 31, 2026 and InstantSpeech on October 31, 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.*