# ILICALC vs ERG for iOS

The clearest difference is update cadence: ILICALC at every 2 weeks against ERG for iOS's every 4 months. ERG for iOS's advantage is rating (4.8 vs 4.5) and ratings volume (64 vs 2). On price, review sentiment, 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.

ERG for iOS holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: ERG for iOS has 64 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

ILICALC ships an update every 2 weeks, ERG for iOS every 4 months. The most recent releases landed on June 4, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | ILICALC | ERG for iOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (2 ratings)](https://appshunter.io/ios/app/ilicalc/id1498804397/reviews) | **[4.8 (64 ratings)](https://appshunter.io/ios/app/erg-for-ios/id1597142669/reviews)** |
| Number of ratings | 2 | **64** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 months |
| Monetization | Free | Free |
| Best chart rank | — | **#193** |
| Size | 20 MB | 27 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Onstream Pipeline Inspection Services Inc](https://appshunter.io/developer/1498684216) | [Pipeline and Hazardous Materials Safety Administration](https://appshunter.io/developer/954888820) |

## What reviewers say

### ILICALC

[App page](https://appshunter.io/ios/app/ilicalc/id1498804397)

This app calculates pipeline flow rates and pressures in various units. It also helps determine ILI or pig run times and convert units for flow rates, pressures, and distances. Users can look up pipe schedules, wall thickness, and pipe grades.

**Highlights:** Calculate pipeline flow rates and pressures, Determine ILI or pig run times, Convert units for flow, pressure, and distance, Lookup pipe schedules and specifications, Supports multiple units of measurement

**Features:** macOS Compatibility

**In-app purchases:** none


### ERG for iOS

[App page](https://appshunter.io/ios/app/erg-for-ios/id1597142669)

**Currently charting:** #193 Top Free · Reference (US App Store)

This app provides first responders with quick access to critical information for hazardous materials transportation incidents. It features an indexed list of dangerous goods, including ID numbers, hazards, and safety precautions, aiding in effective response.

**Highlights:** Indexed list of dangerous goods, ID number lookup, General hazard information, Recommended safety precautions, Multi-language support (English, French, Spanish)

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

**In-app purchases:** none


## Frequently asked questions

### Is ILICALC free?

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

### Is ERG for iOS free?

ERG for iOS is free to download, with no in-app purchases.

### Which has better reviews, ILICALC or ERG for iOS?

ERG for iOS is rated higher. ILICALC averages 4.5 out of 5 from 2 ratings, while ERG for iOS averages 4.8 from 64 ratings.

### Do ILICALC or ERG for iOS have ads?

Neither ILICALC nor ERG for iOS shows ads.

### Which is updated more often, ILICALC or ERG for iOS?

ILICALC ships an update every 2 weeks, and ERG for iOS every 4 months. Most recently, ILICALC was updated on June 4, 2026 and ERG for iOS on September 22, 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.*