# STP Viewer vs CalcNest

The clearest difference is in-app purchases: CalcNest at none against STP Viewer's 3. STP Viewer's advantage is ads (none vs shown) and iOS requirement (13.0 vs 15.6). On price and device support there is nothing between them.

Both are free to download. STP Viewer sells 3 in-app purchases, starting at $1.99 per 7 days. CalcNest asks for nothing beyond the download.

## The numbers

| Metric | STP Viewer | CalcNest |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (5 ratings)](https://appshunter.io/ios/app/calcnest-multiple/id6770840255/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | — | Every 3 weeks |
| Monetization | — | Ad-supported |
| Size | 44 MB | 6 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CODIGITAL SOLUTIONS](https://appshunter.io/developer/1829802387) | [洪铎 许](https://appshunter.io/developer/1896565398) |

## What reviewers say

### STP Viewer

[App page](https://appshunter.io/ios/app/stp-viewer-step-3d/id6770497525)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Access | $1.99 | per 7 days |
| Pro Access | $4.99 | per month |
| Pro Access | $9.99 | per year |


### CalcNest

[App page](https://appshunter.io/ios/app/calcnest-multiple/id6770840255)

This app combines four essential calculators: programmer, scientific, equation solver, and date calculator. It offers quick access to multiple calculation needs without requiring an account, saving time and effort for daily tasks.

**Highlights:** Programmer calculator with multiple number bases and bitwise operations, Scientific calculator with advanced functions, Equation solver for linear and quadratic equations, Date calculator for date differences and additions, Automatic calculation history saving

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is STP Viewer free?

STP Viewer is free to download, with in-app purchases available.

### Is CalcNest free?

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

### Do STP Viewer or CalcNest have ads?

CalcNest shows ads; STP Viewer does not.

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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.*