# Calculator 17 vs Calibre Wallpapers HD

The clearest difference is in-app purchases: Calculator 17 at none against Calibre Wallpapers HD's 1. Calculator 17 also leads on update cadence (every 4 days vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Calibre Wallpapers HD sells 1 one-off in-app purchase. Calculator 17 asks for nothing beyond the download.

Calculator 17 ships an update every 4 days, Calibre Wallpapers HD fortnightly. The most recent releases landed on October 17, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Calculator 17 | Calibre Wallpapers HD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (971 ratings)](https://appshunter.io/ios/app/calculator-17-math-solver/id6452015902/reviews)** | — |
| Number of ratings | **971** | — |
| Positive reviews | 21.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Fortnightly |
| Monetization | Free | — |
| Size | 5 MB | 221 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [AI APPS SRL](https://appshunter.io/developer/1697892814) | [Chris Wakefield](https://appshunter.io/developer/1674151615) |

## What reviewers say

### Calculator 17

[App page](https://appshunter.io/ios/app/calculator-17-math-solver/id6452015902)

This app offers a user-friendly calculator with basic and scientific modes. Access calculations instantly via a home screen widget and review past computations in a saved history.

**Highlights:** User-friendly interface, Basic and scientific modes, Home screen widget, LiveActivity Standby for iPhone, Calculation history, Customizable themes

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

**In-app purchases:** none

**What reviewers like**

- 👍 Convenient and easy to use
- 💡 Excellent free app

**What reviewers complain about**

- 🐛 Keyboard not functioning properly
- 🐛 Widget not working or slow
- 🐛 Screen sizing issues
- 🐛 Only works in portrait mode on iPad

**Reported bugs**

- Widget shows up blank
- Numerical display is cut off
- Significant delay between key presses and display update

**Requested features**

- Add landscape mode support
- Improve widget responsiveness
- Increase bracket functionality


### Calibre Wallpapers HD

[App page](https://appshunter.io/ios/app/calibre-wallpapers-hd/id6476269206)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Unlock | $1.99 | one-time |


## Frequently asked questions

### Is Calculator 17 free?

Calculator 17 is free to download, with no in-app purchases.

### Is Calibre Wallpapers HD free?

Calibre Wallpapers HD is free to download, with in-app purchases available.

### Do Calculator 17 or Calibre Wallpapers HD have ads?

Neither Calculator 17 nor Calibre Wallpapers HD shows ads.

### Which is updated more often, Calculator 17 or Calibre Wallpapers HD?

Calculator 17 ships an update every 4 days, and Calibre Wallpapers HD fortnightly. Most recently, Calculator 17 was updated on October 17, 2026 and Calibre Wallpapers HD on October 7, 2026.

---

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