# CORE Calculator App vs InspectFlow+

The clearest difference is review sentiment: CORE Calculator App at 100% against InspectFlow+'s 50%. CORE Calculator App also leads on rating (5.0 vs 4.3). InspectFlow+'s advantage is in-app purchases (none vs 3) and update cadence (every 3 weeks vs every 2 months). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. CORE Calculator App sells 3 in-app purchases, starting at $4.99 per month. InspectFlow+ asks for nothing beyond the download.

CORE Calculator App holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 11 and 11 respectively. Written reviews point the same way: 100% of CORE Calculator App's written reviews are positive against 50% of InspectFlow+'s.

CORE Calculator App ships an update every 2 months, InspectFlow+ every 3 weeks. The most recent releases landed on October 1, 2026 and August 1, 2026 respectively.

## The numbers

| Metric | CORE Calculator App | InspectFlow+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (11 ratings)](https://appshunter.io/ios/app/core-calculator-app/id1447118499/reviews)** | [4.3 (11 ratings)](https://appshunter.io/ios/app/inspectflow-plus/id1559595673/reviews) |
| Number of ratings | 11 | 11 |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 148 MB | 178 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AsInt Inc.](https://appshunter.io/developer/1438397626) | [HUVRdata, LLC](https://appshunter.io/developer/1433368084) |

## What reviewers say

### CORE Calculator App

[App page](https://appshunter.io/ios/app/core-calculator-app/id1447118499)

This app provides inspectors in the oil and gas industry with essential calculations for asset integrity. It offers tools for determining Tmin, MAWP, corrosion rates, and remaining life based on industry standards.

**Highlights:** Tmin calculations, MAWP calculations, Corrosion rate calculations, Remaining life determination, Construction material information, Damage mechanism identification

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Materials Lookup | $4.99 | per month |
| Damage Mech Screener | $9.99 | per month |
| Materials Lookup | $5.99 | one-time |


### InspectFlow+

[App page](https://appshunter.io/ios/app/inspectflow-plus/id1559595673)

Digitize industrial asset inspections with customizable checklists on your mobile device. Capture data, photos, and videos offline, ensuring consistent and accurate inspection records for teams in the field. Seamlessly sync data when connectivity is available.

**Highlights:** Digitize inspection checklists, Capture photos and videos, Offline data collection, Standardize inspections, Seamless data syncing, Customizable line items and sections

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

**In-app purchases:** none


## Frequently asked questions

### Is CORE Calculator App free?

CORE Calculator App is free to download, with in-app purchases available.

### Is InspectFlow+ free?

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

### Which has better reviews, CORE Calculator App or InspectFlow+?

CORE Calculator App is rated higher. CORE Calculator App averages 5.0 out of 5 from 11 ratings, while InspectFlow+ averages 4.3 from 11 ratings.

### Do CORE Calculator App or InspectFlow+ have ads?

Neither CORE Calculator App nor InspectFlow+ shows ads.

### Which is updated more often, CORE Calculator App or InspectFlow+?

CORE Calculator App ships an update every 2 months, and InspectFlow+ every 3 weeks. Most recently, CORE Calculator App was updated on October 1, 2026 and InspectFlow+ on August 1, 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.*