# CalcBox vs Error Note

The clearest difference is price: CalcBox at Free against Error Note's $0.99. Error Note's advantage is in-app purchases (none vs 2) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

CalcBox is free to download; Error Note costs $0.99 up front. CalcBox sells 2 in-app purchases, starting at $0.99 per month. Error Note asks for nothing beyond the download.

## The numbers

| Metric | CalcBox | Error Note |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.8 (362 ratings)](https://appshunter.io/ios/app/calcbox-all-in-one-calculator/id6480165885/reviews)** | — |
| Number of ratings | **362** | — |
| Positive reviews | 92.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 72 MB | 17 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Realbyte Inc.](https://appshunter.io/developer/560481813) | [建春 张](https://appshunter.io/developer/1844027944) |

## What reviewers say

### CalcBox

[App page](https://appshunter.io/ios/app/calcbox-all-in-one-calculator/id6480165885)

This app combines numerous essential calculation tools into a single, user-friendly interface. It handles everything from basic arithmetic and unit conversions to financial planning, health tracking, and academic performance. Simplify your daily tasks with this comprehensive utility.

**Highlights:** Basic and scientific calculations, Extensive unit and currency conversion, Financial calculators (loan, deposit, tip, discount), Health and fitness trackers (BMI, ovulation), Time and date calculations (D-Day, world clock), Academic tools (GPA calculator)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Subscription | $0.99 | per month |
| 1 Year Subscription | $9.99 | per year |

**What reviewers like**

- ✨ All-in-one calculator with comprehensive features
- 👍 User-friendly and intuitive interface
- 🆓 Free app with no mandatory payments
- 🔄 Unit conversion capabilities (currency, distance, weight, etc.)
- 📊 Calculation history tracking

**What reviewers complain about**

- 📢 Excessive and intrusive advertisements
- 🚫 No option to remove ads permanently
- 😤 Ads cannot be closed easily
- 💳 Subscription model instead of one-time payment
- 🔄 Ad rotation with deceptive content

**Reported bugs**

- Ads cannot be closed with X button
- Excessive ads appearing after initial use period
- Deceptive ad behavior after one week of use

**Requested features**

- One-time payment option to remove ads permanently
- Premium ad-free version (like Money Manager app)
- Set as default calculator option
- Deposit/savings calculator with day-level precision
- Bitcoin/cryptocurrency support


### Error Note

[App page](https://appshunter.io/ios/app/error-note/id6755984755)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CalcBox free?

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

### Is Error Note free?

Error Note costs $0.99, with no in-app purchases.

### Do CalcBox or Error Note have ads?

CalcBox shows ads; Error Note does not.

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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.*