# KAL vs BigBox

The clearest difference is update cadence: BigBox at monthly against KAL's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

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

KAL ships an update every 2 months, BigBox monthly. The most recent releases landed on August 28, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | KAL | BigBox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/kal/id1325544263/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 12.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | — |
| Size | 103 MB | 110 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Kirklees Active Leisure](https://appshunter.io/developer/744140888) | [Big Box Leisure Club Limited](https://appshunter.io/developer/1786926995) |

## What reviewers say

### KAL

[App page](https://appshunter.io/ios/app/kal/id1325544263)

Easily book fitness classes and activities, view timetables, and get up-to-date information about your local facility. Receive important news and offers via push notifications. Manage bookings and explore membership options on the go.

**Highlights:** Book fitness classes and activities, View real-time class timetables, Manage bookings (amend/cancel), Access public swim timetables, Receive news and push notifications, Explore membership options, Share information via social media

**Features:** macOS Compatibility

**In-app purchases:** none


### BigBox

[App page](https://appshunter.io/ios/app/bigbox/id6739763984)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KAL free?

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

### Is BigBox free?

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

### Do KAL or BigBox have ads?

Neither KAL nor BigBox shows ads.

### Which is updated more often, KAL or BigBox?

KAL ships an update every 2 months, and BigBox monthly. Most recently, KAL was updated on August 28, 2026 and BigBox on September 9, 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.*