# 初中数理化7~9年级大全 vs 初中必背

The clearest difference is price: 初中必背 at Free against 初中数理化7~9年级大全's $1.99. 初中必背 also leads on update cadence (every 3 weeks vs every 13 months) and review sentiment (90% vs 67%). 初中数理化7~9年级大全's advantage is in-app purchases (none vs 4). On rating, ratings volume, ads and device support there is nothing between them.

初中必背 is free to download; 初中数理化7~9年级大全 costs $1.99 up front. 初中必背 sells 4 in-app purchases, starting at $2.99 per month. 初中数理化7~9年级大全 asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for 初中数理化7~9年级大全 against 5.0 for 初中必背. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews are what separate them: 67% of 初中数理化7~9年级大全's written reviews are positive against 90% of 初中必背's.

初中数理化7~9年级大全 ships an update every 13 months, 初中必背 every 3 weeks. The most recent releases landed on October 6, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | 初中数理化7~9年级大全 | 初中必背 |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/79/id574272387/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/id6478451617/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 66.7% of reviews | **89.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 3 weeks** |
| Monetization | **Paid** | Subscription |
| Size | 23 MB | 26 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [强 马](https://appshunter.io/developer/508741531) | [静 赵](https://appshunter.io/developer/1553732344) |

## What reviewers say

### 初中数理化7~9年级大全

[App page](https://appshunter.io/ios/app/79/id574272387)

This app offers comprehensive summaries of junior high school math, physics, and chemistry knowledge points. It covers topics from algebra and geometry to all physics and chemistry concepts, eliminating the need for physical notes and books.

**Highlights:** Algebraic concepts summary, Geometry theorems and proofs, Complete physics knowledge points, Comprehensive chemistry concepts, Digital study companion

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

**In-app purchases:** none


### 初中必背

[App page](https://appshunter.io/ios/app/id6478451617)

This app provides essential memorization content for junior high school students, focusing on Chinese classical poetry and prose. It includes audio readings, analysis, and annotations for all required texts across grades 7-9. Additionally, it offers study materials for English, Math, Science, and Social Studies to aid in exam preparation.

**Highlights:** Mandatory Chinese classical poetry and prose, Audio readings and analysis, Annotations and translations, Study materials for 9 subjects, Exam preparation tools, Downloadable and printable content

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 会员连续包月 | $2.99 | per month |
| 会员连续包季 | $6.99 | per 3 months |
| 初中语文必背会员，历年初中英语、初中地理、初中学习必备 | $14.99 | per year |
| 初中语文必背会员，历年初中英语、初中地理、初中学习必备 | $24.99 | one-time |


## Frequently asked questions

### Is 初中数理化7~9年级大全 free?

初中数理化7~9年级大全 costs $1.99, with no in-app purchases.

### Is 初中必背 free?

初中必背 is free to download, with in-app purchases available.

### Which has better reviews, 初中数理化7~9年级大全 or 初中必背?

初中数理化7~9年级大全 and 初中必背 are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do 初中数理化7~9年级大全 or 初中必背 have ads?

Neither 初中数理化7~9年级大全 nor 初中必背 shows ads.

### Which is updated more often, 初中数理化7~9年级大全 or 初中必背?

初中数理化7~9年级大全 ships an update every 13 months, and 初中必背 every 3 weeks. Most recently, 初中数理化7~9年级大全 was updated on October 6, 2026 and 初中必背 on October 22, 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.*