# Adding Machine 10Key Univ Lite vs 12Calc

The clearest difference is price: Adding Machine 10Key Univ Lite at Free against 12Calc's $8.99. Adding Machine 10Key Univ Lite also leads on update cadence (every 6 weeks vs every 5 months) and iOS requirement (12.4 vs 17.6). 12Calc's advantage is rating (4.9 vs 4.3) and review sentiment (96% vs 80%). On ads, in-app purchases and device support there is nothing between them.

Adding Machine 10Key Univ Lite is free to download; 12Calc costs $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.

12Calc holds the better App Store score, 4.9 against 4.3. Both are backed by a comparable volume of ratings — 192 and 916 respectively. Written reviews point the same way: 80% of Adding Machine 10Key Univ Lite's written reviews are positive against 96% of 12Calc's.

Adding Machine 10Key Univ Lite ships an update every 6 weeks, 12Calc every 5 months. The most recent releases landed on August 26, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Adding Machine 10Key Univ Lite | 12Calc |
| --- | --- | --- |
| Price | **Free** | $8.99 |
| Rating | [4.3 (192 ratings)](https://appshunter.io/ios/app/adding-machine-10key-univ-lite/id579393645/reviews) | **[4.9 (916 ratings)](https://appshunter.io/ios/app/12calc/id780780002/reviews)** |
| Number of ratings | 192 | **916** |
| Positive reviews | 79.6% of reviews | **95.9% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 5 months |
| Monetization | **Free** | Paid |
| Best chart rank | — | **#181** |
| Size | 23 MB | 6 MB |
| Requires iOS | **12.4** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | +4 | 4+ |
| Developer | [Richard Silverman](https://appshunter.io/developer/297096643) | [Ernest Brock](https://appshunter.io/developer/289555912) |

## 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


### 12Calc

[App page](https://appshunter.io/ios/app/12calc/id780780002)

**Currently charting:** #181 Top Paid · Finance (US App Store)

This app provides a full-featured financial calculator experience, replicating the functionality of a popular physical model. It offers an audit tape for tracking calculations, a unit converter with currency exchange rates, and various worksheets with interactive graphs for financial analysis. Optimized for modern devices with high-resolution graphics and support for multiple orientations.

**Highlights:** HP12C emulation, Audit tape for calculation history, Unit and currency converter, Interactive financial worksheets, Portrait and landscape views, Contextual help and tutorials, HD graphics with color themes

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

**In-app purchases:** none


## 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 12Calc free?

12Calc costs $8.99, with no in-app purchases.

### Which has better reviews, Adding Machine 10Key Univ Lite or 12Calc?

12Calc is rated higher. Adding Machine 10Key Univ Lite averages 4.3 out of 5 from 192 ratings, while 12Calc averages 4.9 from 916 ratings.

### Do Adding Machine 10Key Univ Lite or 12Calc have ads?

Neither Adding Machine 10Key Univ Lite nor 12Calc shows ads.

### Which is updated more often, Adding Machine 10Key Univ Lite or 12Calc?

Adding Machine 10Key Univ Lite ships an update every 6 weeks, and 12Calc every 5 months. Most recently, Adding Machine 10Key Univ Lite was updated on August 26, 2026 and 12Calc on September 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.*