# DrillOut Calcs vs WellCalc

The clearest difference is in-app purchases: DrillOut Calcs at none against WellCalc's 2. WellCalc's advantage is update cadence (weekly vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. WellCalc sells 2 in-app purchases, starting at $4.99 per month. DrillOut Calcs asks for nothing beyond the download.

DrillOut Calcs ships an update every 3 weeks, WellCalc weekly. Both last shipped on November 5, 2026.

## The numbers

| Metric | DrillOut Calcs | WellCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/drillout-calcs/id6754534235/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free | — |
| Size | 3 MB | 13 MB |
| Requires iOS | 18.5 | **18.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Cody Martin](https://appshunter.io/developer/1796736420) | [Ryan Tinklepaugh](https://appshunter.io/developer/1883444651) |

## What reviewers say

### 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


### WellCalc

[App page](https://appshunter.io/ios/app/wellcalc/id6761081416)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WellCalc Pro Monthly | $4.99 | per month |
| WellCalc Pro Yearly | $29.99 | per year |


## Frequently asked questions

### Is DrillOut Calcs free?

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

### Is WellCalc free?

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

### Do DrillOut Calcs or WellCalc have ads?

Neither DrillOut Calcs nor WellCalc shows ads.

### Which is updated more often, DrillOut Calcs or WellCalc?

DrillOut Calcs ships an update every 3 weeks, and WellCalc weekly. Most recently, DrillOut Calcs was updated on November 5, 2026 and WellCalc on November 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.*