# Spill Calc Lite vs Cementing Engineer

The clearest difference is in-app purchases: Spill Calc Lite at none against Cementing Engineer's 2. Cementing Engineer's advantage is update cadence (fortnightly vs every 16 months) and ratings volume (3 vs 1). On price, rating, ads and device support there is nothing between them.

Both are free to download. Cementing Engineer sells 2 in-app purchases, starting at $9.99 per month. Spill Calc Lite asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Spill Calc Lite against 5.0 for Cementing Engineer. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

Spill Calc Lite ships an update every 16 months, Cementing Engineer fortnightly. The most recent releases landed on October 3, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Spill Calc Lite | Cementing Engineer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/spill-calc-lite/id1089421597/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/cementing-engineer/id6779455442/reviews) |
| Number of ratings | 1 | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 16 months | **Fortnightly** |
| Monetization | **Free** | Subscription |
| Size | 1 MB | 18 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kelly Gayneaux](https://appshunter.io/developer/1082576429) | [Rondo Wright](https://appshunter.io/developer/6779455444) |

## What reviewers say

### Spill Calc Lite

[App page](https://appshunter.io/ios/app/spill-calc-lite/id1089421597)

Quickly estimate surface spill volumes in the field with this tool. Calculate for square, rectangular, circular, and triangular spills, with options for tank displacement. Features a clean interface and helpful library for efficient on-site calculations.

**Highlights:** Estimate surface spill volumes, Calculate for square, rectangular, circular, and triangular spills, Optional tank displacement calculation, Immediate results in barrels and gallons, Clean and modern interface, Easy-to-use Help Library

**Features:** macOS Compatibility

**In-app purchases:** none


### Cementing Engineer

[App page](https://appshunter.io/ios/app/cementing-engineer/id6779455442)

This app is a field calculator for oilfield cementing operations. It allows users to input wellbore geometry and slurry details to get live, updated calculations for volumes, pressures, and pump schedules. The app also features a live well schematic and a tally book for saving and recalling job details.

**Highlights:** Field calculator for oilfield cementing, Live, updating calculations for volumes and pressures, Wellbore geometry and slurry stack input, Derived results with detailed math, Live well schematic, Tally Book for saving and recalling jobs, Offline functionality

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $9.99 | per month |
| Pro Annual | $79.99 | per year |


## Frequently asked questions

### Is Spill Calc Lite free?

Spill Calc Lite is free to download, with no in-app purchases.

### Is Cementing Engineer free?

Cementing Engineer is free to download, with in-app purchases available.

### Which has better reviews, Spill Calc Lite or Cementing Engineer?

Spill Calc Lite and Cementing Engineer are both rated 5.0 out of 5 on the App Store, from 1 and 3 ratings respectively.

### Do Spill Calc Lite or Cementing Engineer have ads?

Neither Spill Calc Lite nor Cementing Engineer shows ads.

### Which is updated more often, Spill Calc Lite or Cementing Engineer?

Spill Calc Lite ships an update every 16 months, and Cementing Engineer fortnightly. Most recently, Spill Calc Lite was updated on October 3, 2026 and Cementing Engineer on October 5, 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.*