# Basic Calculator+ vs UltraBoard

The clearest difference is in-app purchases: Basic Calculator+ at none against UltraBoard's 1. Basic Calculator+ also leads on rating (4.9 vs 4.5) and ratings volume (243K vs 188). UltraBoard's advantage is update cadence (every 2 days vs every 4 months). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. UltraBoard sells 1 in-app purchase, starting at $8.99 per month. Basic Calculator+ asks for nothing beyond the download.

Basic Calculator+ holds the better App Store score, 4.9 against 4.5. That said, the two scores are not equally well evidenced: Basic Calculator+ has 243K ratings behind it against 188, so its average is the more settled of the two. Written reviews point the same way: 87% of Basic Calculator+'s written reviews are positive against 80% of UltraBoard's.

Basic Calculator+ ships an update every 4 months, UltraBoard every 2 days. The most recent releases landed on October 1, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Basic Calculator+ | UltraBoard |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (243K ratings)](https://appshunter.io/ios/app/basic-calculator-plus/id539356791/reviews)** | [4.5 (188 ratings)](https://appshunter.io/ios/app/ultraboard/id1547214365/reviews) |
| Number of ratings | **243K** | 188 |
| Positive reviews | **87.5% of reviews** | 80.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Every 2 days** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 44 MB | 73 MB |
| Requires iOS | **10.0** | 11.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Best Free Apps](https://appshunter.io/developer/539356794) | [Lisfee, Inc.](https://appshunter.io/developer/1146331015) |

## What reviewers say

### Basic Calculator+

[App page](https://appshunter.io/ios/app/basic-calculator-plus/id539356791)

Perform essential arithmetic operations with a straightforward calculator app. Its large buttons and clear display ensure ease of use, supporting both portrait and landscape orientations.

**Highlights:** Basic four functions, Clear display, Large buttons, Portrait and landscape modes, iPad compatible

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 👍 Large, clear buttons
- 👍 Straightforward, basic functionality
- 👍 No ads or in-app purchases
- 👍 Works well on iPad

**What reviewers complain about**

- 🐛 Inconsistent click volume
- 🐛 Ads can be intrusive or disruptive
- 🐛 Missing backspace/delete function

**Reported bugs**

- Incorrect calculation results
- Ads covering the screen

**Requested features**

- Add fraction button
- Implement order of operations
- Include memory function


### UltraBoard

[App page](https://appshunter.io/ios/app/ultraboard/id1547214365)

Create and organize digital notes and boards using your Apple Pencil, stylus, or finger. Customize line color and width, and save your creations into categorized folders. This app offers a subscription for enhanced features.

**Highlights:** Digital whiteboard and blackboard, Apple Pencil, stylus, and finger input, Customizable line color and width, Save and categorize notes/boards, Folder organization

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gold Plan | $8.99 | per month |


## Frequently asked questions

### Is Basic Calculator+ free?

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

### Is UltraBoard free?

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

### Which has better reviews, Basic Calculator+ or UltraBoard?

Basic Calculator+ is rated higher. Basic Calculator+ averages 4.9 out of 5 from 243K ratings, while UltraBoard averages 4.5 from 188 ratings.

### Do Basic Calculator+ or UltraBoard have ads?

Both Basic Calculator+ and UltraBoard show ads.

### Which is updated more often, Basic Calculator+ or UltraBoard?

Basic Calculator+ ships an update every 4 months, and UltraBoard every 2 days. Most recently, Basic Calculator+ was updated on October 1, 2026 and UltraBoard on September 16, 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.*