# Y+ Calculator vs MultiiCalc

The clearest difference is review sentiment: MultiiCalc at 50% against Y+ Calculator's 0%. MultiiCalc also leads on rating (5.0 vs 3.0) and update cadence (monthly vs every 8 months). Y+ Calculator's advantage is in-app purchases (none vs 3) and iOS requirement (9.0 vs 14.0). On price, ads and device support there is nothing between them.

Both are free to download. MultiiCalc sells 3 one-off in-app purchases. Y+ Calculator asks for nothing beyond the download.

MultiiCalc holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: MultiiCalc has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of Y+ Calculator's written reviews are positive against 50% of MultiiCalc's.

Y+ Calculator ships an update every 8 months, MultiiCalc monthly. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Y+ Calculator | MultiiCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/y-plus-calculator/id650011524/reviews) | **[5.0 (9 ratings)](https://appshunter.io/ios/app/multiicalc/id1520137742/reviews)** |
| Number of ratings | 1 | **9** |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 18 MB | 5 MB |
| Requires iOS | **9.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cadence Design Systems, Inc.](https://appshunter.io/developer/1318385448) | [Christina Schell](https://appshunter.io/developer/1520137744) |

## 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


### MultiiCalc

[App page](https://appshunter.io/ios/app/multiicalc/id1520137742)

Save and reuse your important calculations. This tool lets you store named values to easily perform complex financial or cost analyses without losing track of intermediate steps. Share your results with others or export them to different applications.

**Highlights:** Save notable calculations by name, Calculate against saved list items, Track complex financial analyses, Share calculations with friends, Export calculations to other apps, No analytics or tracking

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| A Generous Tip | $1.99 | one-time |
| A Hefty Tip | $3.99 | one-time |
| A Lavish Tip | $6.99 | one-time |


## Frequently asked questions

### Is Y+ Calculator free?

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

### Is MultiiCalc free?

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

### Which has better reviews, Y+ Calculator or MultiiCalc?

MultiiCalc is rated higher. Y+ Calculator averages 3.0 out of 5 from 1 ratings, while MultiiCalc averages 5.0 from 9 ratings.

### Do Y+ Calculator or MultiiCalc have ads?

Neither Y+ Calculator nor MultiiCalc shows ads.

### Which is updated more often, Y+ Calculator or MultiiCalc?

Y+ Calculator ships an update every 8 months, and MultiiCalc monthly. Most recently, Y+ Calculator was updated on October 21, 2026 and MultiiCalc on October 24, 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.*