# Bulk Material Density Guide vs Tank App

The clearest difference is update cadence: Tank App at every 5 days against Bulk Material Density Guide's every 18 months. On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Bulk Material Density Guide against 5.0 for Tank App. Both are backed by a comparable volume of ratings — 5 and 4 respectively.

Bulk Material Density Guide ships an update every 18 months, Tank App every 5 days. The most recent releases landed on October 5, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Bulk Material Density Guide | Tank App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (5 ratings)](https://appshunter.io/ios/app/bulk-material-density-guide/id1454584553/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/tank-app-fluid-logistics/id6747981406/reviews) |
| Number of ratings | **5** | 4 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 5 days** |
| Monetization | Free | Free |
| Size | 3 MB | 52 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sean Patterson](https://appshunter.io/developer/1437079753) | [Tank App LLC](https://appshunter.io/developer/1823687136) |

## What reviewers say

### Bulk Material Density Guide

[App page](https://appshunter.io/ios/app/bulk-material-density-guide/id1454584553)

This reference tool helps users find the bulk density of over 1700 materials. It's designed for professionals working with powders and bulk solids, assisting in conveyor specification and production system design. Search for materials by typing their name to quickly get estimated bulk density values.

**Highlights:** Search over 1700 materials, Find bulk density for powders and solids, Assists in conveyor specification, Aids in production system design, Quick search by typing material name, Provides estimated density values

**Features:** macOS Compatibility

**In-app purchases:** none


### Tank App

[App page](https://appshunter.io/ios/app/tank-app-fluid-logistics/id6747981406)

This app simplifies tank management for businesses by monitoring fluid levels, tracking deliveries, and recording usage. It helps you stay organized with accurate volume calculations, tank farm management, and custom alerts for low inventory.

**Highlights:** Accurate volume calculator, Supports all major tank types, Tank farm manager, PO, transfer, and vendor return logging, Reading history and reporting, Custom tank alerts

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Bulk Material Density Guide free?

Bulk Material Density Guide is free to download, with no in-app purchases.

### Is Tank App free?

Tank App is free to download, with no in-app purchases.

### Which has better reviews, Bulk Material Density Guide or Tank App?

Bulk Material Density Guide and Tank App are both rated 5.0 out of 5 on the App Store, from 5 and 4 ratings respectively.

### Do Bulk Material Density Guide or Tank App have ads?

Neither Bulk Material Density Guide nor Tank App shows ads.

### Which is updated more often, Bulk Material Density Guide or Tank App?

Bulk Material Density Guide ships an update every 18 months, and Tank App every 5 days. Most recently, Bulk Material Density Guide was updated on October 5, 2026 and Tank App 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.*