# 10BII Calc HD vs Adding Machine 10Key iPhone

The clearest difference is price: Adding Machine 10Key iPhone at $2.99 against 10BII Calc HD's $8.99. Adding Machine 10Key iPhone also leads on update cadence (every 5 weeks vs every 5 months) and iOS requirement (12.4 vs 17.6). 10BII Calc HD's advantage is rating (4.9 vs 4.6) and ratings volume (3.7K vs 130). On review sentiment, ads, in-app purchases and device support there is nothing between them.

10BII Calc HD costs $8.99 and Adding Machine 10Key iPhone $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

10BII Calc HD holds the better App Store score, 4.9 against 4.6. That said, the two scores are not equally well evidenced: 10BII Calc HD has 3.7K ratings behind it against 130, so its average is the more settled of the two. Written reviews point the same way: 99% of 10BII Calc HD's written reviews are positive against 95% of Adding Machine 10Key iPhone's.

10BII Calc HD ships an update every 5 months, Adding Machine 10Key iPhone every 5 weeks. The most recent releases landed on September 25, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | 10BII Calc HD | Adding Machine 10Key iPhone |
| --- | --- | --- |
| Price | $8.99 | **$2.99** |
| Rating | **[4.9 (3.7K ratings)](https://appshunter.io/ios/app/10bii-calc-hd/id382452060/reviews)** | [4.6 (130 ratings)](https://appshunter.io/ios/app/adding-machine-10key-iphone/id392883834/reviews) |
| Number of ratings | **3.7K** | 130 |
| Positive reviews | **98.8% of reviews** | 95.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 5 weeks** |
| Monetization | Paid | **Free** |
| Best chart rank | **#15** | #66 |
| Size | 4 MB | 10 MB |
| Requires iOS | 17.6 | **12.4** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ernest Brock](https://appshunter.io/developer/289555912) | [Richard Silverman](https://appshunter.io/developer/297096643) |

## What reviewers say

### 10BII Calc HD

[App page](https://appshunter.io/ios/app/10bii-calc-hd/id382452060)

**Currently charting:** #15 Top Paid · Finance (US App Store)

This advanced calculator offers over 100 functions for business, finance, math, and statistics. It simplifies complex calculations like loans, cash flows, and depreciation with an intuitive interface and specialized worksheets. Includes interactive graphs and an audit tape for tracking all computations.

**Highlights:** Over 100 business, finance, math, and statistics functions, Time Value of Money calculations with TVM solver, Cash flow analysis with dedicated editor, Statistical analysis and forecasting, Currency and unit conversions, Interactive graphs and audit tape

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Outstanding app
- 🚀 Great product
- 🚀 Great financial calculator
- 🚀 iPad keyboard support
- 🚀 Best financial calculator app

**What reviewers complain about**

- 🐛 Doesn't retain my stored values in the registers once the app is closed on my IPhone Pro

**Reported bugs**

- Loan payment calculation issue after update

**Requested features**

- RPN mode
- Canadian mortgage support


### Adding Machine 10Key iPhone

[App page](https://appshunter.io/ios/app/adding-machine-10key-iphone/id392883834)

**Currently charting:** #66 Top Paid · Finance (US App Store)

This app emulates a traditional 10-key adding machine, offering reversed operator entry and percentage calculation. Users can edit and save paper tapes, export them to various services, and customize keypad sounds. It's designed for accurate and efficient numerical input.

**Highlights:** True 10-key adding machine emulation, Reversed operator entry, Percentage calculation, Editable paper tape history, Save and retrieve paper tape files, Export paper tape to iBooks, Dropbox, or printing utilities

**In-app purchases:** none

**What reviewers like**

- 👍 Works like a real adding machine
- 👍 Tape feature is excellent
- 👍 Easy to use and user-friendly
- 👍 Good for complex calculations
- 👍 Allows editing of numbers

**What reviewers complain about**

- 🐛 Watermarks premium exports
- 🐛 Haphazardly laid out controls
- 🐛 Touchy sound toggle in free version
- 🐛 Keypad glitch on re-opening
- 🐛 Nagging review requests

**Reported bugs**

- Watermarks premium PDF exports
- Haphazardly laid out controls
- Touchy sound toggle in free version
- Keypad glitch on re-opening
- Nagging review requests (Don't ask again button not working)

**Requested features**

- Eliminate tape for bigger total screen
- Add square root feature
- Bring back custom keypad feature on iPhone version
- Allow more than 350 lines
- Allow more notations on tape


## Frequently asked questions

### Is 10BII Calc HD free?

10BII Calc HD costs $8.99, with no in-app purchases.

### Is Adding Machine 10Key iPhone free?

Adding Machine 10Key iPhone costs $2.99, with no in-app purchases.

### Which has better reviews, 10BII Calc HD or Adding Machine 10Key iPhone?

10BII Calc HD is rated higher. 10BII Calc HD averages 4.9 out of 5 from 3.7K ratings, while Adding Machine 10Key iPhone averages 4.6 from 130 ratings.

### Do 10BII Calc HD or Adding Machine 10Key iPhone have ads?

Neither 10BII Calc HD nor Adding Machine 10Key iPhone shows ads.

### Which is updated more often, 10BII Calc HD or Adding Machine 10Key iPhone?

10BII Calc HD ships an update every 5 months, and Adding Machine 10Key iPhone every 5 weeks. Most recently, 10BII Calc HD was updated on September 25, 2026 and Adding Machine 10Key iPhone on September 26, 2026.

### Which is more popular, 10BII Calc HD or Adding Machine 10Key iPhone?

10BII Calc HD currently peaks at #15 in the App Store charts, and Adding Machine 10Key iPhone at #66. Chart position reflects recent download velocity rather than total install base.

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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.*