# StallionVMS vs DrillOut Calcs

The clearest difference is update cadence: DrillOut Calcs at every 3 weeks against StallionVMS's every 17 months. StallionVMS's advantage is iOS requirement (12.0 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 StallionVMS against 5.0 for DrillOut Calcs. Both are backed by a comparable volume of ratings — 5 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

StallionVMS ships an update every 17 months, DrillOut Calcs every 3 weeks. The most recent releases landed on June 1, 2026 and July 31, 2026 respectively.

## The numbers

| Metric | StallionVMS | DrillOut Calcs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (5 ratings)](https://appshunter.io/ios/app/stallionvms/id1572471179/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/drillout-calcs/id6754534235/reviews) |
| Number of ratings | **5** | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 42 MB | 3 MB |
| Requires iOS | **12.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Stallion Infrastructure Services LTD](https://appshunter.io/developer/1572471182) | [Cody Martin](https://appshunter.io/developer/1796736420) |

## What reviewers say

### StallionVMS

[App page](https://appshunter.io/ios/app/stallionvms/id1572471179)

Monitor surveillance cameras in real-time and review past footage. This system offers cloud storage and advanced analytics, including object detection for people and vehicles. Receive instant notifications for triggered events.

**Highlights:** Real-time camera monitoring, Review past events and archives, Cloud storage and analytics, Object detection (people, vehicles), Customizable event notifications, Bank-grade encryption

**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 StallionVMS free?

StallionVMS 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, StallionVMS or DrillOut Calcs?

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

### Do StallionVMS or DrillOut Calcs have ads?

Neither StallionVMS nor DrillOut Calcs shows ads.

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

StallionVMS ships an update every 17 months, and DrillOut Calcs every 3 weeks. Most recently, StallionVMS was updated on June 1, 2026 and DrillOut Calcs on July 31, 2026.

---

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