# Neptune Slurry Calculator vs Cloud Smart Lock App

The clearest difference is update cadence: Cloud Smart Lock App at every 2 months against Neptune Slurry Calculator's every 50 months. Neptune Slurry Calculator's advantage is review sentiment (100% vs 75%). 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 ships an update every 50 months, Cloud Smart Lock App every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Neptune Slurry Calculator | Cloud Smart Lock App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/neptune-slurry-calculator/id1095701474/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | **100.0% of reviews** | 75.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 50 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 16 MB | 33 MB |
| Requires iOS | 13.4 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chuck Baxter](https://appshunter.io/developer/1095701473) | [明毅 龚](https://appshunter.io/developer/1461728481) |

## 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


### Cloud Smart Lock App

[App page](https://appshunter.io/ios/app/cloud-smart-lock-app/id1461728482)

Manage and operate your smart door lock from the cloud. Features include one-key unlocking, sharing access via QR codes, and automatic unlocking. View lock status and access unlock history.

**Highlights:** Add and manage door locks, One-key unlocking, QR code sharing for access, Automatic unlocking, View lock status, Unlock history records

**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 Cloud Smart Lock App free?

Cloud Smart Lock App is free to download, with no in-app purchases.

### Do Neptune Slurry Calculator or Cloud Smart Lock App have ads?

Neither Neptune Slurry Calculator nor Cloud Smart Lock App shows ads.

### Which is updated more often, Neptune Slurry Calculator or Cloud Smart Lock App?

Neptune Slurry Calculator ships an update every 50 months, and Cloud Smart Lock App every 2 months. Most recently, Neptune Slurry Calculator was updated on November 2, 2026 and Cloud Smart Lock App on November 3, 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.*