# Piper Inventory vs Kopperfield

The clearest difference is review sentiment: Piper Inventory at 100% against Kopperfield's 0%. Kopperfield's advantage is in-app purchases (none vs 2) and update cadence (every 3 weeks vs every 6 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Piper Inventory sells 2 in-app purchases, starting at $22.00 per month. Kopperfield asks for nothing beyond the download.

Kopperfield holds the better App Store score, 3.9 against 3.7. Both are backed by a comparable volume of ratings — 3 and 9 respectively. Written reviews complicate that: 100% of Piper Inventory's written reviews are positive against 0% of Kopperfield's, so the app with the better star average is not the one people write more warmly about.

Piper Inventory ships an update every 6 months, Kopperfield every 3 weeks. Both last shipped on October 3, 2026.

## The numbers

| Metric | Piper Inventory | Kopperfield |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/piper-inventory/id6469746367/reviews) | **[3.9 (9 ratings)](https://appshunter.io/ios/app/kopperfield/id6736772332/reviews)** |
| Number of ratings | 3 | **9** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Monetization | Subscription | **Ad-supported** |
| Size | 17 MB | 45 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Piper Diagnostics LLC](https://appshunter.io/developer/1712591819) | [Kopperfield](https://appshunter.io/developer/1756157251) |

## What reviewers say

### Piper Inventory

[App page](https://appshunter.io/ios/app/piper-inventory/id6469746367)

Manage your warehouse or mobile workstation inventory on the go. Easily add items, set minimum quantities, and use a Bluetooth barcode scanner to track stock. Syncs between devices for collaboration and generates restock lists.

**Highlights:** On-the-go inventory management, Bluetooth barcode scanner support, Set minimum stock quantities, Restock list generation, Inventory history tracking, Multi-location account management, Spreadsheet upload for setup

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $22.00 | per month |
| Annual | $199.00 | per year |


### Kopperfield

[App page](https://appshunter.io/ios/app/kopperfield/id6736772332)

Streamline electrical design and permitting with powerful tools for load calculations, panel schedules, and single-line diagrams. Quickly reference the National Electrical Code with an AI-powered chatbot and generate instant PDF reports for inspectors and clients.

**Highlights:** Load calculator with NEC standards, Single line diagram tool, Panel schedule creation, NEC chatbot, Instant PDF report generation, AI panel photo processing, Team dashboard

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

**In-app purchases:** none


## Frequently asked questions

### Is Piper Inventory free?

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

### Is Kopperfield free?

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

### Which has better reviews, Piper Inventory or Kopperfield?

Kopperfield is rated higher. Piper Inventory averages 3.7 out of 5 from 3 ratings, while Kopperfield averages 3.9 from 9 ratings.

### Do Piper Inventory or Kopperfield have ads?

Neither Piper Inventory nor Kopperfield shows ads.

### Which is updated more often, Piper Inventory or Kopperfield?

Piper Inventory ships an update every 6 months, and Kopperfield every 3 weeks. Most recently, Piper Inventory was updated on October 3, 2026 and Kopperfield on October 3, 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.*