# Sand Calculator vs FuelFlow

The clearest difference is in-app purchases: FuelFlow at none against Sand Calculator's 3. FuelFlow also leads on update cadence (every 2 months vs every 61 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Sand Calculator sells 3 in-app purchases, starting at $0.99 per 7 days. FuelFlow asks for nothing beyond the download.

Sand Calculator ships an update every 61 months, FuelFlow every 2 months. The most recent releases landed on October 24, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Sand Calculator | FuelFlow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/sand-calculator/id1552854569/reviews)** | — |
| Number of ratings | **7** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 61 months | **Every 2 months** |
| Monetization | Free with in-app purchases | — |
| Size | 2 MB | 75 MB |
| Requires iOS | **14.2** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Anna Filobok](https://appshunter.io/developer/1613515832) | [FuelFlow, LLC](https://appshunter.io/developer/1855867400) |

## What reviewers say

### Sand Calculator

[App page](https://appshunter.io/ios/app/sand-calculator/id1552854569)

This utility app provides real-time calculations for sand properties like area, volume, and weight. It seamlessly converts between imperial and metric units for dimensions, density, and mass, making it ideal for quick estimations.

**Highlights:** Real-time unit conversions, Imperial to metric system support, Calculate area, volume, and weight, Customizable sand density input, Supports various units for dimensions, weight, and density

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $0.99 | per 7 days |
| Premium Access | $1.99 | per month |
| Premium Access | $5.99 | per year |


### FuelFlow

[App page](https://appshunter.io/ios/app/fuelflow/id6755723484)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Sand Calculator free?

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

### Is FuelFlow free?

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

### Do Sand Calculator or FuelFlow have ads?

Neither Sand Calculator nor FuelFlow shows ads.

### Which is updated more often, Sand Calculator or FuelFlow?

Sand Calculator ships an update every 61 months, and FuelFlow every 2 months. Most recently, Sand Calculator was updated on October 24, 2026 and FuelFlow on October 13, 2026.

---

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