# PowerOne calculator vs Huron Propane

The clearest difference is in-app purchases: Huron Propane at none against PowerOne calculator's 2. Huron Propane also leads on iOS requirement (12.2 vs 17.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. PowerOne calculator sells 2 in-app purchases, starting at $2.99 per month. Huron Propane asks for nothing beyond the download.

PowerOne calculator ships an update every 3 months, Huron Propane every 4 months. The most recent releases landed on October 26, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | PowerOne calculator | Huron Propane |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (806 ratings)](https://appshunter.io/ios/app/powerone-calculator/id1141498515/reviews)** | — |
| Number of ratings | **806** | — |
| Positive reviews | 50.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 6 MB | 56 MB |
| Requires iOS | 17.6 | **12.2** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Crafty Weasel, LLC](https://appshunter.io/developer/1602588690) | [Rural Computer Consultants, Inc.](https://appshunter.io/developer/640795441) |

## What reviewers say

### PowerOne calculator

[App page](https://appshunter.io/ios/app/powerone-calculator/id1141498515)

This app offers a powerful calculator with hundreds of pre-built templates for finance, engineering, and more. Users can also create custom calculations for specific needs, ensuring accuracy and speed for repetitive tasks. Access your calculations across devices, online or offline.

**Highlights:** Hundreds of pre-built calculation templates, Create custom calculation templates, Standard and RPN calculator modes, Cross-device syncing (iPhone, iPad, Mac, Web), Offline access, Template sharing for teams, Customizable themes

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium Subscription | $2.99 | per month |
| Annual Premium Subscription | $19.99 | per year |

**What reviewers like**

- 🚀 Powerful and versatile calculator
- 👍 Extensive template library
- 🚀 Customizable keyboard and layout
- 👍 Helpful customer support
- 🚀 Syncing across devices

**What reviewers complain about**

- 🔒 Requires account login
- 👎 Subscription pricing model
- 👎 Cluttered and less user-friendly interface
- 👎 Removed features from previous versions
- 🐛 Bugs and glitches

**Reported bugs**

- Calculator not accessible after update
- Templates disappearing after update
- Incompatibility with iOS 16
- Calculation errors in certain templates

**Requested features**

- Landscape mode support
- Ability to reorganize templates
- Restore previous version's interface
- Retain access to purchased features


### Huron Propane

[App page](https://appshunter.io/ios/app/huron-propane/id6447526841)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PowerOne calculator free?

PowerOne calculator is free to download, with in-app purchases available.

### Is Huron Propane free?

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

### Do PowerOne calculator or Huron Propane have ads?

Neither PowerOne calculator nor Huron Propane shows ads.

### Which is updated more often, PowerOne calculator or Huron Propane?

PowerOne calculator ships an update every 3 months, and Huron Propane every 4 months. Most recently, PowerOne calculator was updated on October 26, 2026 and Huron Propane on September 29, 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.*