# Calculator + vs Calculator 17

The clearest difference is price: Calculator 17 at Free against Calculator +'s $3.99. Calculator 17 also leads on update cadence (every 4 days vs every 3 months) and ratings volume (971 vs 13). Calculator +'s advantage is review sentiment (33% vs 22%) and iOS requirement (9.0 vs 16.0). On rating, ads, in-app purchases and device support there is nothing between them.

Calculator 17 is free to download; Calculator + costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Calculator 17 holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: Calculator 17 has 971 ratings behind it against 13, so its average is the more settled of the two. Written reviews complicate that: 33% of Calculator +'s written reviews are positive against 22% of Calculator 17's, so the app with the better star average is not the one people write more warmly about.

Calculator + ships an update every 3 months, Calculator 17 every 4 days. The most recent releases landed on September 20, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Calculator + | Calculator 17 |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [4.4 (13 ratings)](https://appshunter.io/ios/app/calculator-plus-twin-plus-app/id1378597024/reviews) | **[4.6 (971 ratings)](https://appshunter.io/ios/app/calculator-17-math-solver/id6452015902/reviews)** |
| Number of ratings | 13 | **971** |
| Positive reviews | **33.3% of reviews** | 21.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Monetization | Paid | **Free** |
| Size | 27 MB | 5 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | +4 | 4+ |
| Developer | [Satomi Uchida](https://appshunter.io/developer/1340507560) | [AI APPS SRL](https://appshunter.io/developer/1697892814) |

## What reviewers say

### Calculator +

[App page](https://appshunter.io/ios/app/calculator-plus-twin-plus-app/id1378597024)

This advanced calculator offers multiple calculation modes, a persistent history log, and customizable themes. It functions offline and is compatible with Mac devices, providing a comprehensive tool for various mathematical needs.

**Highlights:** Multiple calculator modes, Calculation history log, Customizable color themes, Global comma formatting, Offline functionality, Mac compatibility

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Calculator + free?

Calculator + costs $3.99, with no in-app purchases.

### Is Calculator 17 free?

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

### Which has better reviews, Calculator + or Calculator 17?

Calculator 17 is rated higher. Calculator + averages 4.4 out of 5 from 13 ratings, while Calculator 17 averages 4.6 from 971 ratings.

### Do Calculator + or Calculator 17 have ads?

Neither Calculator + nor Calculator 17 shows ads.

### Which is updated more often, Calculator + or Calculator 17?

Calculator + ships an update every 3 months, and Calculator 17 every 4 days. Most recently, Calculator + was updated on September 20, 2026 and Calculator 17 on September 17, 2026.

---

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