# Y+ Calculator vs sci.calculator

The clearest difference is in-app purchases: Y+ Calculator at none against sci.calculator's 1. Y+ Calculator also leads on iOS requirement (9.0 vs 15.0). sci.calculator's advantage is update cadence (every 5 weeks vs every 8 months). On price, ads and device support there is nothing between them.

Both are free to download. sci.calculator sells 1 one-off in-app purchase. Y+ Calculator asks for nothing beyond the download.

Y+ Calculator ships an update every 8 months, sci.calculator every 5 weeks. The most recent releases landed on October 21, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Y+ Calculator | sci.calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/y-plus-calculator/id650011524/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 18 MB | 49 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cadence Design Systems, Inc.](https://appshunter.io/developer/1318385448) | [Yukihiro Shioya](https://appshunter.io/developer/1565306192) |

## What reviewers say

### Y+ Calculator

[App page](https://appshunter.io/ios/app/y-plus-calculator/id650011524)

This app calculates the necessary grid spacing for computational fluid dynamics (CFD) simulations. It helps engineers determine near-wall cell height for accurate viscous flow computations. Supports both SI and Imperial units.

**Highlights:** Calculate grid spacing for target y+ values, Supports viscous CFD computations, Works in SI or Imperial units, Resets to sea-level conditions, Based on established fluid mechanics theory

**Features:** macOS Compatibility

**In-app purchases:** none


### sci.calculator

[App page](https://appshunter.io/ios/app/scicalculator/id1620728508)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Y+ Calculator free?

Y+ Calculator is free to download, with no in-app purchases.

### Is sci.calculator free?

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

### Do Y+ Calculator or sci.calculator have ads?

Neither Y+ Calculator nor sci.calculator shows ads.

### Which is updated more often, Y+ Calculator or sci.calculator?

Y+ Calculator ships an update every 8 months, and sci.calculator every 5 weeks. Most recently, Y+ Calculator was updated on October 21, 2026 and sci.calculator on October 16, 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.*