# Neptune Slurry Calculator vs Ring sizer

The clearest difference is rating: Neptune Slurry Calculator at 5.0 against Ring sizer's 3.8. Neptune Slurry Calculator also leads on review sentiment (100% vs 64%) and ads (none vs shown). Ring sizer's advantage is update cadence (every 8 months vs every 50 months) and ratings volume (14 vs 2). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Neptune Slurry Calculator holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Ring sizer has 14 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of Neptune Slurry Calculator's written reviews are positive against 64% of Ring sizer's.

Neptune Slurry Calculator ships an update every 50 months, Ring sizer every 8 months. The most recent releases landed on October 10, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Neptune Slurry Calculator | Ring sizer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/neptune-slurry-calculator/id1095701474/reviews)** | [3.8 (14 ratings)](https://appshunter.io/ios/app/ring-sizer-unit-convertor/id1566103820/reviews) |
| Number of ratings | 2 | **14** |
| Positive reviews | **100.0% of reviews** | 64.1% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 50 months | **Every 8 months** |
| Monetization | **Free** | Ad-supported |
| Size | 16 MB | 48 MB |
| Requires iOS | 13.4 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chuck Baxter](https://appshunter.io/developer/1095701473) | [Regent Branding Ltd](https://appshunter.io/developer/1128207635) |

## What reviewers say

### Neptune Slurry Calculator

[App page](https://appshunter.io/ios/app/neptune-slurry-calculator/id1095701474)

Calculate essential slurry and pump parameters for the sand and aggregate industries. This tool offers dynamic head, horsepower, mass balance, and flow calculations, along with unit conversions.

**Highlights:** Pump total dynamic head and horsepower calculations, Pipe line velocities, Mass balances, Flow over weirs, Motor information, Unit conversions (% solids to SG, psi to ft. of head, mesh sizes)

**Features:** macOS Compatibility

**In-app purchases:** none


### Ring sizer

[App page](https://appshunter.io/ios/app/ring-sizer-unit-convertor/id1566103820)

Easily determine your accurate ring size and convert between international sizing standards. This tool helps you find the perfect fit for any ring, avoiding the frustration of ill-fitting jewelry. Save your sizes and compare them effortlessly.

**Highlights:** Accurate ring and finger size measurement, Convert between international ring size standards (US, UK, EU), Simple and easy-to-use interface, Supports a wide range of ring sizes, Save and compare ring sizes, Unit conversion functionality

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Neptune Slurry Calculator free?

Neptune Slurry Calculator is free to download, with no in-app purchases.

### Is Ring sizer free?

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

### Which has better reviews, Neptune Slurry Calculator or Ring sizer?

Neptune Slurry Calculator is rated higher. Neptune Slurry Calculator averages 5.0 out of 5 from 2 ratings, while Ring sizer averages 3.8 from 14 ratings.

### Do Neptune Slurry Calculator or Ring sizer have ads?

Ring sizer shows ads; Neptune Slurry Calculator does not.

### Which is updated more often, Neptune Slurry Calculator or Ring sizer?

Neptune Slurry Calculator ships an update every 50 months, and Ring sizer every 8 months. Most recently, Neptune Slurry Calculator was updated on October 10, 2026 and Ring sizer on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*