# Penn Mobile vs Zetamac Arithmetic Practice

The clearest difference is update cadence: Zetamac Arithmetic Practice at daily against Penn Mobile's every 4 weeks. Zetamac Arithmetic Practice also leads on review sentiment (82% vs 53%). Penn Mobile's advantage is ratings volume (410 vs 18). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.6 for Penn Mobile against 4.7 for Zetamac Arithmetic Practice. That said, the two scores are not equally well evidenced: Penn Mobile has 410 ratings behind it against 18, so its average is the more settled of the two. Written reviews are what separate them: 53% of Penn Mobile's written reviews are positive against 82% of Zetamac Arithmetic Practice's.

Penn Mobile ships an update every 4 weeks, Zetamac Arithmetic Practice daily. The most recent releases landed on September 8, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Penn Mobile | Zetamac Arithmetic Practice |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (410 ratings)](https://appshunter.io/ios/app/penn-mobile/id944829399/reviews) | **[4.7 (18 ratings)](https://appshunter.io/ios/app/zetamac-arithmetic-practice/id6737153617/reviews)** |
| Number of ratings | **410** | 18 |
| Positive reviews | 52.6% of reviews | **82.4% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Daily** |
| Monetization | Free | Free |
| Size | 31 MB | 1 MB |
| Requires iOS | 17.6 | **17.5** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [University of Pennsylvania](https://appshunter.io/developer/437910363) | [Joseph Ma](https://appshunter.io/developer/1774979062) |

## What reviewers say

### Penn Mobile

[App page](https://appshunter.io/ios/app/penn-mobile/id944829399)

Streamline your campus experience with essential tools for student life. Access study room bookings, dining hall menus and hours, course schedules, and laundry machine availability. Quickly find fitness facility hours and emergency services.

**Highlights:** Study room booking, Dining hall hours and menus, Course schedule access, Laundry machine availability, Fitness facility hours, Emergency services access

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

**In-app purchases:** none

**What reviewers like**

- 👍 Very useful app for students
- 👍 Great interface
- 👍 Helpful for freshman/new students
- 👍 Convenient for dining hall menus
- 👍 Consolidates many student services

**What reviewers complain about**

- 🐛 Unable to log in
- 🐛 App crashes frequently
- 🐛 API connection issues
- 🐛 Data unavailable
- 🐛 App won't open

**Reported bugs**

- Unable to log in after Duo pop-up
- Cannot load dining halls or retail dining
- Unable to log in with PennKey
- App does not open after recent update
- App prompts to log in every time

**Requested features**

- Include fitness center hours
- Include building directory of campus
- Fix API connection issues
- Update app for better stability
- Fix login bugs


### Zetamac Arithmetic Practice

[App page](https://appshunter.io/ios/app/zetamac-arithmetic-practice/id6737153617)

This app offers mental math practice tailored for quantitative finance professionals. It focuses on improving calculation speed and accuracy for complex numerical problems.

**Highlights:** Mental math practice, Quantitative finance focus, Calculation speed improvement, Accuracy enhancement, Numerical problem solving

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

**In-app purchases:** none


## Frequently asked questions

### Is Penn Mobile free?

Penn Mobile is free to download, with no in-app purchases.

### Is Zetamac Arithmetic Practice free?

Zetamac Arithmetic Practice is free to download, with no in-app purchases.

### Which has better reviews, Penn Mobile or Zetamac Arithmetic Practice?

Zetamac Arithmetic Practice is rated higher. Penn Mobile averages 4.6 out of 5 from 410 ratings, while Zetamac Arithmetic Practice averages 4.7 from 18 ratings.

### Do Penn Mobile or Zetamac Arithmetic Practice have ads?

Neither Penn Mobile nor Zetamac Arithmetic Practice shows ads.

### Which is updated more often, Penn Mobile or Zetamac Arithmetic Practice?

Penn Mobile ships an update every 4 weeks, and Zetamac Arithmetic Practice daily. Most recently, Penn Mobile was updated on September 8, 2026 and Zetamac Arithmetic Practice on September 22, 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.*