# Adding Machine 10Key Univ Lite vs Calculator X

The clearest difference is in-app purchases: Adding Machine 10Key Univ Lite at none against Calculator X's 2. Adding Machine 10Key Univ Lite also leads on ads (none vs shown) and iOS requirement (12.4 vs 14.0). Calculator X's advantage is rating (4.6 vs 4.3) and ratings volume (6.2K vs 192). On price, review sentiment and device support there is nothing between them.

Both are free to download. Calculator X sells 2 in-app purchases, starting at $9.99 per 6 months. Adding Machine 10Key Univ Lite asks for nothing beyond the download.

Calculator X holds the better App Store score, 4.6 against 4.3. That said, the two scores are not equally well evidenced: Calculator X has 6.2K ratings behind it against 192, so its average is the more settled of the two. Written reviews complicate that: 80% of Adding Machine 10Key Univ Lite's written reviews are positive against 76% of Calculator X's, so the app with the better star average is not the one people write more warmly about.

Adding Machine 10Key Univ Lite ships an update every 6 weeks, Calculator X every 3 weeks. The most recent releases landed on October 22, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Adding Machine 10Key Univ Lite | Calculator X |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (192 ratings)](https://appshunter.io/ios/app/adding-machine-10key-univ-lite/id579393645/reviews) | **[4.6 (6.2K ratings)](https://appshunter.io/ios/app/calculator-x-math-for-ipad/id1198685408/reviews)** |
| Number of ratings | 192 | **6.2K** |
| Positive reviews | **79.6% of reviews** | 76.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 23 MB | 188 MB |
| Requires iOS | **12.4** | 14.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Richard Silverman](https://appshunter.io/developer/297096643) | [Otrofy Inc.](https://appshunter.io/developer/532323150) |

## What reviewers say

### Adding Machine 10Key Univ Lite

[App page](https://appshunter.io/ios/app/adding-machine-10key-univ-lite/id579393645)

This app emulates a traditional 10-key adding machine for precise calculations. It offers features like reversed operator entry, percentage calculation, and the ability to edit and save paper tape files. The iPad version includes a full-size keypad with audio feedback for enhanced accuracy.

**Highlights:** 10-key adding machine emulation, Reversed operator entry, Percentage calculation, Paper tape editing and saving, Export paper tape files, TypeTone audio feedback (iPad)

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 👍 Works like a real adding machine
- 👍 Tape feature is useful
- 👍 Large, clear numbers
- 👍 Good for bookkeeping

**What reviewers complain about**

- 💸 Paid version is expensive
- 📉 Ads take up screen space on iPhone
- 🤏 Keys are too small on lite version
- 🗄️ Lite version has limited lines
- 💡 Trailing zeros not displayed

**Reported bugs**

- 3 digits get frozen during calculations
- Crashed and lost data
- The "don't ask again" button for reviews does nothing
- App freezes when switching apps

**Requested features**

- Ability to set automatic cents
- Two sales tax rates or ability to deselect items from tax
- More lines in the free version
- More screen space on iPhone
- Ability to add more before clearing


### Calculator X

[App page](https://appshunter.io/ios/app/calculator-x-math-for-ipad/id1198685408)

This app offers a smart calculator experience across iPad, iPhone, and Apple Watch. It features a history of calculations, the ability to edit equations, and a convenient dark mode. Easily share your results and enjoy enhanced productivity with its user-friendly interface.

**Highlights:** Basic & Easy to Use, History of Calculations, Edit Equation, Memory Last Calculation, Dark Mode, Drag and Drop, Split View

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calculator Premium | $9.99 | per 6 months |
| Gold Support | $6.99 | one-time |

**What reviewers like**

- 👍 Simple and basic calculator
- 💜 Beautiful color themes
- 🔒 No ads
- 💾 Calculation history
- 🔍 Easy to use

**What reviewers complain about**

- 🐛 Occasional bugs and glitches
- 💰 Paywall/tokens required to use
- 🖍️ Limited color options
- 🔢 Only supports up to 9 digits
- 🧮 No scientific calculator functions

**Reported bugs**

- Calculation history clearing issues
- Dark mode not working properly
- Compatibility problems on older devices

**Requested features**

- More color theme options
- Ability to edit/restore calculation history
- Percentage and scientific calculator functions
- Customizable fonts and layouts


## Frequently asked questions

### Is Adding Machine 10Key Univ Lite free?

Adding Machine 10Key Univ Lite is free to download, with no in-app purchases.

### Is Calculator X free?

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

### Which has better reviews, Adding Machine 10Key Univ Lite or Calculator X?

Calculator X is rated higher. Adding Machine 10Key Univ Lite averages 4.3 out of 5 from 192 ratings, while Calculator X averages 4.6 from 6.2K ratings.

### Do Adding Machine 10Key Univ Lite or Calculator X have ads?

Calculator X shows ads; Adding Machine 10Key Univ Lite does not.

### Which is updated more often, Adding Machine 10Key Univ Lite or Calculator X?

Adding Machine 10Key Univ Lite ships an update every 6 weeks, and Calculator X every 3 weeks. Most recently, Adding Machine 10Key Univ Lite was updated on October 22, 2026 and Calculator X on October 26, 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.*