# PDF Size Reducer vs Calculator+ Pro & Math Solver

The clearest difference is in-app purchases: Calculator+ Pro & Math Solver at none against PDF Size Reducer's 3. Calculator+ Pro & Math Solver also leads on ads (none vs shown). PDF Size Reducer's advantage is update cadence (every 8 days vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. PDF Size Reducer sells 3 in-app purchases, starting at $1.99 per 7 days. Calculator+ Pro & Math Solver asks for nothing beyond the download.

PDF Size Reducer ships an update every 8 days, Calculator+ Pro & Math Solver every 2 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | PDF Size Reducer | Calculator+ Pro & Math Solver |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/pdf-size-reducer-pdfbuddy/id6757869694/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 8 days** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 22 MB | 57 MB |
| Requires iOS | 16.0 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [App Vista Studio](https://appshunter.io/developer/1566540600) | [mouhamad cherkawi](https://appshunter.io/developer/1807798998) |

## What reviewers say

### PDF Size Reducer

[App page](https://appshunter.io/ios/app/pdf-size-reducer-pdfbuddy/id6757869694)

Easily scan documents, convert images and text to PDF, and manage your files on the go. This app offers essential tools for creating, editing, and signing PDFs with a simple interface.

**Highlights:** Scan documents to PDF, Convert images and text to PDF, Convert PDFs to images and Word documents, Merge and split PDF files, Compress PDF size, Add watermarks and signatures, Secure and share PDFs

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan | $1.99 | per 7 days |
| Monthly | $2.99 | per month |
| Yearly | $19.99 | per year |


### Calculator+ Pro & Math Solver

[App page](https://appshunter.io/ios/app/calculator-plus-pro-and-math-solver/id6759214087)

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

**In-app purchases:** none


## Frequently asked questions

### Is PDF Size Reducer free?

PDF Size Reducer is free to download, with in-app purchases available.

### Is Calculator+ Pro & Math Solver free?

Calculator+ Pro & Math Solver is free to download, with no in-app purchases.

### Do PDF Size Reducer or Calculator+ Pro & Math Solver have ads?

PDF Size Reducer shows ads; Calculator+ Pro & Math Solver does not.

### Which is updated more often, PDF Size Reducer or Calculator+ Pro & Math Solver?

PDF Size Reducer ships an update every 8 days, and Calculator+ Pro & Math Solver every 2 months. Most recently, PDF Size Reducer was updated on October 24, 2026 and Calculator+ Pro & Math Solver 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.*