# Calculator Max vs PowerOne calculator

The clearest difference is rating: PowerOne calculator at 4.6 against Calculator Max's 4.3. Calculator Max's advantage is device support (4 vs 2) and iOS requirement (15.0 vs 17.6). On price, review sentiment, ratings volume and update cadence there is nothing between them.

Both are free to download. Calculator Max sells 2 in-app purchases, starting at $4.99 per year and PowerOne calculator sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

PowerOne calculator holds the better App Store score, 4.6 against 4.3. Both are backed by a comparable volume of ratings — 1.9K and 806 respectively. Written reviews complicate that: 55% of Calculator Max's written reviews are positive against 50% of PowerOne calculator's, so the app with the better star average is not the one people write more warmly about.

Calculator Max ships an update every 2 months, PowerOne calculator every 3 months. The most recent releases landed on October 22, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Calculator Max | PowerOne calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (1.9K ratings)](https://appshunter.io/ios/app/calculator-max/id364905554/reviews) | **[4.6 (806 ratings)](https://appshunter.io/ios/app/powerone-calculator/id1141498515/reviews)** |
| Number of ratings | **1.9K** | 806 |
| Positive reviews | **55.1% of reviews** | 50.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 126 MB | 6 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Pavel Kozarek](https://appshunter.io/developer/303215376) | [Crafty Weasel, LLC](https://appshunter.io/developer/1602588690) |

## What reviewers say

### Calculator Max

[App page](https://appshunter.io/ios/app/calculator-max/id364905554)

This app offers a comprehensive suite of calculation tools, from basic arithmetic to advanced scientific functions. It features a history tape for easy access and reuse of entries, and a unique scribble pad for handwritten notes and equation solving on iPads. Enjoy a clean interface, multitasking support, and customizable themes.

**Highlights:** Basic and scientific calculators, History tape with export options, Handwritten notes and equation solving, Multitasking support on iPad, Customizable themes and app icons, Home Screen and Lock Screen widgets

**Features:** Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calculator Max Pro | $4.99 | per year |
| Calculator Max Pro | $3.99 | one-time |

**What reviewers like**

- 🚀 Easy to use
- 📝 Useful note-taking feature
- 💾 Tape/history feature
- 👍 Clean and intuitive interface
- 🎨 Customizable appearance

**What reviewers complain about**

- 🐛 Compatibility issues with newer iOS versions
- 📤 Lack of export/sharing options for tape/history
- 🔍 Difficulty finding settings
- 🔀 Sensitive orientation switching

**Reported bugs**

- Crashes after iOS 26 update
- Tape not visible/functional on iPhone
- Calculator buttons/layout issues in split-screen mode

**Requested features**

- Left-handed mode
- Backspace/edit functionality
- Scientific calculator mode with tape
- Tape annotation/labeling
- Cloud/Dropbox sync for tape


### 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


## Frequently asked questions

### Is Calculator Max free?

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

### Is PowerOne calculator free?

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

### Which has better reviews, Calculator Max or PowerOne calculator?

PowerOne calculator is rated higher. Calculator Max averages 4.3 out of 5 from 1.9K ratings, while PowerOne calculator averages 4.6 from 806 ratings.

### Do Calculator Max or PowerOne calculator have ads?

Neither Calculator Max nor PowerOne calculator shows ads.

### Which is updated more often, Calculator Max or PowerOne calculator?

Calculator Max ships an update every 2 months, and PowerOne calculator every 3 months. Most recently, Calculator Max was updated on October 22, 2026 and PowerOne calculator on October 26, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*