# 單字知識王 vs inif

The clearest difference is review sentiment: 單字知識王 at 56% against inif's 0%. 單字知識王 also leads on in-app purchases (none vs 5) and ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. inif sells 5 one-off in-app purchases. 單字知識王 asks for nothing beyond the download.

單字知識王 ships an update weekly, inif every 10 days. The most recent releases landed on November 3, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | 單字知識王 | inif |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/id6466239865/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | **55.6% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 10 days |
| Monetization | — | Free with in-app purchases |
| Size | 548 MB | 13 MB |
| Requires iOS | **14.0** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CMoney](https://appshunter.io/developer/503431064) | [Youci Huang](https://appshunter.io/developer/1797438794) |

## What reviewers say

### 單字知識王

[App page](https://appshunter.io/ios/app/id6466239865)

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

**In-app purchases:** none


### inif

[App page](https://appshunter.io/ios/app/inif-ai-interview-coach/id6745684106)

This AI-powered coach prepares Taiwanese students for university admission interviews. It analyzes your application materials and generates realistic interview questions based on your chosen major and school. Practice your responses through simulated voice conversations and receive detailed feedback.

**Highlights:** AI-generated interview questions, Analysis of application materials (PDF), Realistic voice conversation practice, Detailed performance feedback reports, Tailored to Taiwanese university applications, Token-based practice sessions

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Token Pack A | $0.99 | one-time |
| Token Pack B | $2.99 | one-time |
| Token Pack C | $4.99 | one-time |
| Token Pack D | $14.99 | one-time |
| Token Pack E | $49.99 | one-time |


## Frequently asked questions

### Is 單字知識王 free?

單字知識王 is free to download, with no in-app purchases.

### Is inif free?

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

### Do 單字知識王 or inif have ads?

inif shows ads; 單字知識王 does not.

### Which is updated more often, 單字知識王 or inif?

單字知識王 ships an update weekly, and inif every 10 days. Most recently, 單字知識王 was updated on November 3, 2026 and inif on November 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.*