# 论文君 vs 口算批改

The clearest difference is rating: 口算批改 at 5.0 against 论文君's 3.8. On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. 论文君 sells 8 one-off in-app purchases and 口算批改 sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

口算批改 holds the better App Store score, 5.0 against 3.8. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

论文君 ships an update every 5 weeks, 口算批改 every 3 months. The most recent releases landed on September 17, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | 论文君 | 口算批改 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (4 ratings)](https://appshunter.io/ios/app/paperpass/id1611521216/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pk/id6446873728/reviews)** |
| Number of ratings | **4** | 2 |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 8 MB | 33 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Beijing Weiyi Trading Co., Ltd](https://appshunter.io/developer/1556574052) | [Light Speed Intelligence Technology Co., Ltd.](https://appshunter.io/developer/1670291399) |

## What reviewers say

### 论文君

[App page](https://appshunter.io/ios/app/paperpass/id1611521216)

This tool helps students check their academic papers for plagiarism and offers AI-powered rewriting to reduce similarity. It also provides professional templates for thesis proposals and defenses, aiming to increase paper acceptance rates.

**Highlights:** Plagiarism detection against multiple databases, AI-powered text rewriting for similarity reduction, Preview and download similarity reports, Thesis proposal and defense PPT templates, Professional and secure academic services

**Features:** macOS Compatibility

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 单次查重 | $0.99 | one-time |
| 单次降重 | $0.99 | one-time |
| 月VIP | $3.99 | one-time |
| 单次查重1 | $3.99 | one-time |
| 单次查重2 | $6.99 | one-time |
| 年VIP | $9.99 | one-time |
| 单次查重3 | $14.99 | one-time |
| 永久会员 | $14.99 | one-time |


### 口算批改

[App page](https://appshunter.io/ios/app/pk/id6446873728)

Instantly check children's math homework by taking a photo. This AI-powered tool helps identify errors in various math problem types, supporting learning and reducing workload for parents and teachers. Offers subscription plans for continued use.

**Highlights:** Instant photo-based homework checking, AI-powered error detection, Supports diverse math problem types, Helps children learn from mistakes, Reduces workload for parents/teachers, Daily practice exercises

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月会员 | $3.99 | per month |
| 年会员 | $19.99 | per year |
| 永久会员 | $22.99 | one-time |


## Frequently asked questions

### Is 论文君 free?

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

### Is 口算批改 free?

口算批改 is free to download, with in-app purchases available.

### Which has better reviews, 论文君 or 口算批改?

口算批改 is rated higher. 论文君 averages 3.8 out of 5 from 4 ratings, while 口算批改 averages 5.0 from 2 ratings.

### Do 论文君 or 口算批改 have ads?

Neither 论文君 nor 口算批改 shows ads.

### Which is updated more often, 论文君 or 口算批改?

论文君 ships an update every 5 weeks, and 口算批改 every 3 months. Most recently, 论文君 was updated on September 17, 2026 and 口算批改 on June 5, 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.*