# calculator plus app vs PD

The clearest difference is in-app purchases: PD at none against calculator plus app's 3. PD also leads on update cadence (weekly vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. calculator plus app sells 3 in-app purchases, starting at $0.99 per month. PD asks for nothing beyond the download.

calculator plus app ships an update monthly, PD weekly. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | calculator plus app | PD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/calculator-plus-app/id6477162507/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 20 MB | 132 MB |
| Requires iOS | **15.6** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [Quanxiangweilai Technology (guangzhou) Co., Ltd.](https://appshunter.io/developer/1503328001) | [Proteus Design & Tech Pte Ltd](https://appshunter.io/developer/1801915394) |

## What reviewers say

### calculator plus app

[App page](https://appshunter.io/ios/app/calculator-plus-app/id6477162507)

This app offers a versatile calculator with history saving and attachment support. It handles basic arithmetic, scientific functions, and allows sharing results. Set alarms for calculations to meet daily needs.

**Highlights:** Save calculation history, Attach files to calculations, Share results and attachments, Set alarms for calculations, Standard and scientific modes, Basic arithmetic operations

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly pass | $0.99 | per month |
| Season card | $2.59 | per 3 months |
| Annual Pass | $9.99 | per year |


### PD

[App page](https://appshunter.io/ios/app/pd-1/id6748522066)

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

**In-app purchases:** none


## Frequently asked questions

### Is calculator plus app free?

calculator plus app is free to download, with in-app purchases available.

### Is PD free?

PD is free to download, with no in-app purchases.

### Do calculator plus app or PD have ads?

Neither calculator plus app nor PD shows ads.

### Which is updated more often, calculator plus app or PD?

calculator plus app ships an update monthly, and PD weekly. Most recently, calculator plus app was updated on October 12, 2026 and PD on October 7, 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.*