# Save Notes vs Neptune Slurry Calculator

The clearest difference is review sentiment: Neptune Slurry Calculator at 100% against Save Notes's 33%. Neptune Slurry Calculator also leads on rating (5.0 vs 4.0). Save Notes's advantage is ratings volume (39 vs 2) and update cadence (every 24 months vs every 50 months). On price, ads, in-app purchases and monetization model 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 4.0. That said, the two scores are not equally well evidenced: Save Notes has 39 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 33% of Save Notes's written reviews are positive against 100% of Neptune Slurry Calculator's.

Save Notes ships an update every 24 months, Neptune Slurry Calculator every 50 months. The most recent releases landed on October 21, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Save Notes | Neptune Slurry Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (39 ratings)](https://appshunter.io/ios/app/save-notes-secure-your-data/id1063042936/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/neptune-slurry-calculator/id1095701474/reviews)** |
| Number of ratings | **39** | 2 |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 24 months** | Every 50 months |
| Monetization | Free | Free |
| Size | 12 MB | 16 MB |
| Requires iOS | **13.0** | 13.4 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Abhay Vala](https://appshunter.io/developer/915927007) | [Chuck Baxter](https://appshunter.io/developer/1095701473) |

## What reviewers say

### Save Notes

[App page](https://appshunter.io/ios/app/save-notes-secure-your-data/id1063042936)

Securely store your private notes with password protection. Keep personal information safe from unauthorized access on your iPhone or iPod touch. Ensure your thoughts and data remain confidential.

**Highlights:** Password protect notes, Secure personal information, Private note storage, Reliable and safe lock, Optimized for iPhone 6/6 Plus

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Save Notes free?

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

### Is Neptune Slurry Calculator free?

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

### Which has better reviews, Save Notes or Neptune Slurry Calculator?

Neptune Slurry Calculator is rated higher. Save Notes averages 4.0 out of 5 from 39 ratings, while Neptune Slurry Calculator averages 5.0 from 2 ratings.

### Do Save Notes or Neptune Slurry Calculator have ads?

Neither Save Notes nor Neptune Slurry Calculator shows ads.

### Which is updated more often, Save Notes or Neptune Slurry Calculator?

Save Notes ships an update every 24 months, and Neptune Slurry Calculator every 50 months. Most recently, Save Notes was updated on October 21, 2026 and Neptune Slurry Calculator on October 10, 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.*