# Quad Memo vs 语音计算器Pro

The clearest difference is price: 语音计算器Pro at Free against Quad Memo's $2.99. 语音计算器Pro also leads on update cadence (fortnightly vs every 4 months) and iOS requirement (15.0 vs 17.6). Quad Memo's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

语音计算器Pro is free to download; Quad Memo costs $2.99 up front. 语音计算器Pro sells 1 one-off in-app purchase. Quad Memo asks for nothing beyond the download.

Quad Memo ships an update every 4 months, 语音计算器Pro fortnightly. The most recent releases landed on October 11, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Quad Memo | 语音计算器Pro |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Size | 2 MB | 91 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shun Isayama](https://appshunter.io/developer/1578976556) | [XMAN HONG KONG LIMITED](https://appshunter.io/developer/1627407248) |

## What reviewers say

### Quad Memo

[App page](https://appshunter.io/ios/app/quad-memo/id6755368825)

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

**In-app purchases:** none


### 语音计算器Pro

[App page](https://appshunter.io/ios/app/pro/id6757188452)

This utility app offers a unique approach to calculations by combining voice and button input with real-time audio feedback of results. It supports bilingual announcements and automatically saves your calculation history for easy access and reuse.

**Highlights:** Real-time voice feedback, Button and voice input, Bilingual announcements (Chinese/English), Automatic history saving, Simple and intuitive interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 专业版 | $1.99 | one-time |


## Frequently asked questions

### Is Quad Memo free?

Quad Memo costs $2.99, with no in-app purchases.

### Is 语音计算器Pro free?

语音计算器Pro is free to download, with in-app purchases available.

### Do Quad Memo or 语音计算器Pro have ads?

语音计算器Pro shows ads; Quad Memo does not.

### Which is updated more often, Quad Memo or 语音计算器Pro?

Quad Memo ships an update every 4 months, and 语音计算器Pro fortnightly. Most recently, Quad Memo was updated on October 11, 2026 and 语音计算器Pro on October 25, 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.*