# CPC Utility vs DrillOut Calcs

The clearest difference is update cadence: DrillOut Calcs at every 3 weeks against CPC Utility's every 12 months. CPC Utility's advantage is iOS requirement (13.0 vs 18.5). On price, rating, review sentiment and ratings volume 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 CPC Utility against 5.0 for DrillOut Calcs. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

CPC Utility ships an update every 12 months, DrillOut Calcs every 3 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | CPC Utility | DrillOut Calcs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/cpc-utility/id1502728707/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/drillout-calcs/id6754534235/reviews) |
| Number of ratings | **3** | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 27 MB | 3 MB |
| Requires iOS | **13.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Thru Tubing Solutions Inc.](https://appshunter.io/developer/1502728706) | [Cody Martin](https://appshunter.io/developer/1796736420) |

## What reviewers say

### CPC Utility

[App page](https://appshunter.io/ios/app/cpc-utility/id1502728707)

This utility app provides instant contact with well control services for emergencies. It also includes helpful calculators and lookup tables for casing, flange, coiled tubing, and nitrogen volume.

**Highlights:** 24/7 Well Control callout, Casing information lookup, Flange data, Coiled tubing calculator, Nitrogen volume calculator

**Features:** macOS Compatibility

**In-app purchases:** none


### DrillOut Calcs

[App page](https://appshunter.io/ios/app/drillout-calcs/id6754534235)

This app offers essential calculations for oilfield professionals performing post-frac plug drill-outs. It provides quick and accurate tools to verify flow balance, annular velocity, sweep efficiency, and surface return timing in real time, designed for simplicity and speed.

**Highlights:** Post-frac plug drill-out calculations, Flow balance verification, Annular velocity calculation, Sweep efficiency assessment, Surface return timing, Real-time data verification

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

**In-app purchases:** none


## Frequently asked questions

### Is CPC Utility free?

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

### Is DrillOut Calcs free?

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

### Which has better reviews, CPC Utility or DrillOut Calcs?

CPC Utility and DrillOut Calcs are both rated 5.0 out of 5 on the App Store, from 3 and 2 ratings respectively.

### Do CPC Utility or DrillOut Calcs have ads?

Neither CPC Utility nor DrillOut Calcs shows ads.

### Which is updated more often, CPC Utility or DrillOut Calcs?

CPC Utility ships an update every 12 months, and DrillOut Calcs every 3 weeks. Most recently, CPC Utility was updated on October 24, 2026 and DrillOut Calcs 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.*