# ZEN browser vs K12 MathBee

The clearest difference is rating: K12 MathBee at 4.6 against ZEN browser's 3.0. K12 MathBee also leads on update cadence (every 5 months vs every 26 months) and ratings volume (10 vs 2). ZEN browser's advantage is iOS requirement (9.0 vs 14.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

K12 MathBee holds the better App Store score, 4.6 against 3.0. That said, the two scores are not equally well evidenced: K12 MathBee has 10 ratings behind it against 2, so its average is the more settled of the two.

ZEN browser ships an update every 26 months, K12 MathBee every 5 months. The most recent releases landed on October 14, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | ZEN browser | K12 MathBee |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/zen-browser/id665543029/reviews) | **[4.6 (10 ratings)](https://appshunter.io/ios/app/k12-mathbee/id6752494421/reviews)** |
| Number of ratings | 2 | **10** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 26 months | **Every 5 months** |
| Monetization | Free | Free |
| Size | 45 MB | 153 MB |
| Requires iOS | **9.0** | 14.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Carl Zeiss AG](https://appshunter.io/developer/488066215) | [Stride Inc.](https://appshunter.io/developer/374976974) |

## What reviewers say

### ZEN browser

[App page](https://appshunter.io/ios/app/zen-browser/id665543029)

This application allows educators and researchers to navigate and view image databases on iPads. It facilitates collaboration by enabling image sharing, annotation, and Z-stack navigation. Access your research data remotely for presentations and discussions.

**Highlights:** Navigate image databases, View Z-stacks, Insert annotations, Share images with colleagues, Access ZEISS demo server

**In-app purchases:** none


### K12 MathBee

[App page](https://appshunter.io/ios/app/k12-mathbee/id6752494421)

This interactive math game for grades 2-5 makes practicing multiplication, fractions, and more fun. It uses a bubble-shooter mechanic with single and multiplayer modes, offering rewards and unlockable levels to keep young learners engaged.

**Highlights:** Bubble-shooter math game, Single and two-player modes, Covers addition, subtraction, multiplication, division, fractions, decimals, money, and measurement, Unlockable levels and achievement badges, In-game shop for cosmetic upgrades, Aligned with grades 2-5 curriculum

**In-app purchases:** none


## Frequently asked questions

### Is ZEN browser free?

ZEN browser is free to download, with no in-app purchases.

### Is K12 MathBee free?

K12 MathBee is free to download, with no in-app purchases.

### Which has better reviews, ZEN browser or K12 MathBee?

K12 MathBee is rated higher. ZEN browser averages 3.0 out of 5 from 2 ratings, while K12 MathBee averages 4.6 from 10 ratings.

### Do ZEN browser or K12 MathBee have ads?

Neither ZEN browser nor K12 MathBee shows ads.

### Which is updated more often, ZEN browser or K12 MathBee?

ZEN browser ships an update every 26 months, and K12 MathBee every 5 months. Most recently, ZEN browser was updated on October 14, 2026 and K12 MathBee on September 24, 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.*