# Adding Machine 10Key Universal vs Billing Hours

The clearest difference is rating: Adding Machine 10Key Universal at 4.7 against Billing Hours's 3.7. Adding Machine 10Key Universal also leads on review sentiment (94% vs 67%) and ratings volume (136 vs 26). Billing Hours's advantage is iOS requirement (9.0 vs 12.4). On update cadence, ads, in-app purchases and chart position there is nothing between them.

Adding Machine 10Key Universal costs $3.99 and Billing Hours $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Adding Machine 10Key Universal holds the better App Store score, 4.7 against 3.7. That said, the two scores are not equally well evidenced: Adding Machine 10Key Universal has 136 ratings behind it against 26, so its average is the more settled of the two. Written reviews point the same way: 94% of Adding Machine 10Key Universal's written reviews are positive against 67% of Billing Hours's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 14, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Adding Machine 10Key Universal | Billing Hours |
| --- | --- | --- |
| Price | **$3.99** | $4.99 |
| Rating | **[4.7 (136 ratings)](https://appshunter.io/ios/app/adding-machine-10key-universal/id579385939/reviews)** | [3.7 (26 ratings)](https://appshunter.io/ios/app/billing-hours-time-tracking/id836083876/reviews) |
| Number of ratings | **136** | 26 |
| Positive reviews | **94.0% of reviews** | 67.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Paid | **Free** |
| Best chart rank | **#152** | #195 |
| Size | 23 MB | 3 MB |
| Requires iOS | 12.4 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Richard Silverman](https://appshunter.io/developer/297096643) | [Birdsoft LLC](https://appshunter.io/developer/293366061) |

## What reviewers say

### Adding Machine 10Key Universal

[App page](https://appshunter.io/ios/app/adding-machine-10key-universal/id579385939)

**Currently charting:** #152 Top Paid · Finance (US App Store)

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 review and edit entries on a digital paper tape. Users can save, export, and print their calculation tapes.

**Highlights:** 10-key adding machine emulation, Reversed operator entry, Percentage calculation, Digital paper tape with editing, Save and export tapes (PDF), TypeTone audio feedback (iPad)

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🧮 Acts like an adding machine
- 🧾 Digital tape for review
- 🖨️ Can print tape
- 💾 Can save/export results

**What reviewers complain about**

- 🐛 Outdated and no support
- 🐛 Doesn't work for new iPad
- 🐛 Total only shows non-zero decimals
- 🐛 Ridiculous method to clear tape
- 🐛 % key not functional

**Reported bugs**

- Cannot save taped
- Cannot export results
- Does not work for new iPad
- Total only shows digits after the decimal that aren't zero
- Method to clear the tape is ridiculous

**Requested features**

- Add widget
- Add realistic sounds
- Add iCloud sync
- Improve tape clearing method
- Clarify functionality of % and +/- keys


### Billing Hours

[App page](https://appshunter.io/ios/app/billing-hours-time-tracking/id836083876)

**Currently charting:** #195 Top Paid · Finance (US App Store)

Effortlessly track your time and expenses for clients and projects. Generate professional invoices, reports, and manage billing periods with ease. Secure your sensitive financial data with a PIN lock.

**Highlights:** Add and manage timed entries and expenses, Create custom invoices, Email or print invoices and reports, Filter entries by date, state, and type, PIN lock for data security, Unlimited clients, projects, and invoices

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

**In-app purchases:** none


## Frequently asked questions

### Is Adding Machine 10Key Universal free?

Adding Machine 10Key Universal costs $3.99, with no in-app purchases.

### Is Billing Hours free?

Billing Hours costs $4.99, with no in-app purchases.

### Which has better reviews, Adding Machine 10Key Universal or Billing Hours?

Adding Machine 10Key Universal is rated higher. Adding Machine 10Key Universal averages 4.7 out of 5 from 136 ratings, while Billing Hours averages 3.7 from 26 ratings.

### Do Adding Machine 10Key Universal or Billing Hours have ads?

Neither Adding Machine 10Key Universal nor Billing Hours shows ads.

### Which is updated more often, Adding Machine 10Key Universal or Billing Hours?

Adding Machine 10Key Universal ships an update every 2 months, and Billing Hours every 2 months. Most recently, Adding Machine 10Key Universal was updated on October 14, 2026 and Billing Hours on October 10, 2026.

### Which is more popular, Adding Machine 10Key Universal or Billing Hours?

Adding Machine 10Key Universal currently peaks at #152 in the App Store charts, and Billing Hours at #195. 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.*