# 词根词缀背单词 vs Simple Factors

The clearest difference is review sentiment: Simple Factors at 100% against 词根词缀背单词's 33%. 词根词缀背单词's advantage is price (Free vs $0.99) and update cadence (every 2 months vs every 20 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

词根词缀背单词 is free to download; Simple Factors costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

词根词缀背单词 ships an update every 2 months, Simple Factors every 20 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 词根词缀背单词 | Simple Factors |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | — | **[3.8 (5 ratings)](https://appshunter.io/ios/app/simple-factors/id1084119563/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 20 months |
| Monetization | — | Paid |
| Size | 11 MB | 1 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [长江 蔡](https://appshunter.io/developer/332486602) | [Joseph Palmer](https://appshunter.io/developer/914507761) |

## What reviewers say

### 词根词缀背单词

[App page](https://appshunter.io/ios/app/id473906209)

**In-app purchases:** none


### Simple Factors

[App page](https://appshunter.io/ios/app/simple-factors/id1084119563)

This app helps users understand numbers by providing their factors and checking for primality or divisibility. It offers a straightforward interface for quick calculations up to 10 trillion.

**Highlights:** Calculates factors of numbers, Checks for primality, Determines divisibility, Supports numbers up to 10 trillion, Simple, menu-free interface

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

**In-app purchases:** none


## Frequently asked questions

### Is 词根词缀背单词 free?

词根词缀背单词 is free to download, with no in-app purchases.

### Is Simple Factors free?

Simple Factors costs $0.99, with no in-app purchases.

### Do 词根词缀背单词 or Simple Factors have ads?

Neither 词根词缀背单词 nor Simple Factors shows ads.

### Which is updated more often, 词根词缀背单词 or Simple Factors?

词根词缀背单词 ships an update every 2 months, and Simple Factors every 20 months. Most recently, 词根词缀背单词 was updated on October 25, 2026 and Simple Factors on October 24, 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.*