# Gas Volume Calc vs DFA SCADA

The clearest difference is update cadence: DFA SCADA at every 4 months against Gas Volume Calc's every 61 months. DFA SCADA also leads on rating (5.0 vs 4.7) and iOS requirement (15.0 vs 26.1). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

DFA SCADA holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 3 and 6 respectively.

Gas Volume Calc ships an update every 61 months, DFA SCADA every 4 months. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Gas Volume Calc | DFA SCADA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (3 ratings)](https://appshunter.io/ios/app/gas-volume-calc/id1082576430/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/dfa-scada/id1567843374/reviews)** |
| Number of ratings | 3 | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 61 months | **Every 4 months** |
| Monetization | Free | Free |
| Size | 18 MB | 79 MB |
| Requires iOS | 26.1 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kelly Gayneaux](https://appshunter.io/developer/1082576429) | [Deep Fork Automation](https://appshunter.io/developer/1567843376) |

## What reviewers say

### Gas Volume Calc

[App page](https://appshunter.io/ios/app/gas-volume-calc/id1082576430)

This utility estimates natural gas flow rate using standard orifice meter calculations. It's designed for field use by operators, technicians, and engineers, combining meter geometry, flowing conditions, and gas composition for quick, reliable estimates.

**Highlights:** Estimates natural gas flow rate (MCFD), Uses standard orifice meter calculations, Combines meter geometry, flowing conditions, and gas composition, Provides reliable flow estimates in seconds, Simple and dependable field workflow

**Features:** macOS Compatibility

**In-app purchases:** none


### DFA SCADA

[App page](https://appshunter.io/ios/app/dfa-scada/id1567843374)

Monitor equipment remotely, receive alerts, and review historical data with this application. Users can manually input data, add comments, and track project progress. Contact the developer for further details.

**Highlights:** Remote equipment monitoring, Real-time alerts, Historical data graphs, Manual data entry, Progress tracking, Comment logging

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Gas Volume Calc free?

Gas Volume Calc is free to download, with no in-app purchases.

### Is DFA SCADA free?

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

### Which has better reviews, Gas Volume Calc or DFA SCADA?

DFA SCADA is rated higher. Gas Volume Calc averages 4.7 out of 5 from 3 ratings, while DFA SCADA averages 5.0 from 6 ratings.

### Do Gas Volume Calc or DFA SCADA have ads?

Neither Gas Volume Calc nor DFA SCADA shows ads.

### Which is updated more often, Gas Volume Calc or DFA SCADA?

Gas Volume Calc ships an update every 61 months, and DFA SCADA every 4 months. Most recently, Gas Volume Calc was updated on October 24, 2026 and DFA SCADA on October 14, 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.*