# 算算熊 Pro vs PDF Watermark Assistant

The clearest difference is update cadence: 算算熊 Pro at weekly against PDF Watermark Assistant's every 5 months. On price, ads, in-app purchases and device support there is nothing between them.

算算熊 Pro costs $0.99 and PDF Watermark Assistant $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

算算熊 Pro ships an update weekly, PDF Watermark Assistant every 5 months. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 算算熊 Pro | PDF Watermark Assistant |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 5 months |
| Monetization | Paid | — |
| Size | 2 MB | 5 MB |
| Requires iOS | **15.6** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [博 吴](https://appshunter.io/developer/1815854119) | [乐祥 胡](https://appshunter.io/developer/1572365721) |

## What reviewers say

### 算算熊 Pro

[App page](https://appshunter.io/ios/app/pro/id6746227550)

This app offers an engaging way for children to practice arithmetic skills through both on-screen and auditory exercises. It features multi-user support, detailed progress tracking, and data analysis to monitor learning trends. Designed for a fun and efficient math learning experience.

**Highlights:** Oral arithmetic practice, Auditory arithmetic practice, Multi-user support, Intelligent statistics, Data analysis, Elegant design

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

**In-app purchases:** none


### PDF Watermark Assistant

[App page](https://appshunter.io/ios/app/pdf-watermark-assistant/id6747923103)

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

**In-app purchases:** none


## Frequently asked questions

### Is 算算熊 Pro free?

算算熊 Pro costs $0.99, with no in-app purchases.

### Is PDF Watermark Assistant free?

PDF Watermark Assistant costs $0.99, with no in-app purchases.

### Do 算算熊 Pro or PDF Watermark Assistant have ads?

Neither 算算熊 Pro nor PDF Watermark Assistant shows ads.

### Which is updated more often, 算算熊 Pro or PDF Watermark Assistant?

算算熊 Pro ships an update weekly, and PDF Watermark Assistant every 5 months. Most recently, 算算熊 Pro was updated on October 24, 2026 and PDF Watermark Assistant on October 28, 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.*