# Callahan’s Karate vs BIGGERFIVE

The clearest difference is rating: Callahan’s Karate at 5.0 against BIGGERFIVE's 4.0. BIGGERFIVE's advantage is ratings volume (1.1K vs 10). On price, update cadence, 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.

Callahan’s Karate holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: BIGGERFIVE has 1.1K ratings behind it against 10, so its average is the more settled of the two.

Callahan’s Karate ships an update every 4 months, BIGGERFIVE every 2 months. The most recent releases landed on October 10, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Callahan’s Karate | BIGGERFIVE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (10 ratings)](https://appshunter.io/ios/app/callahans-karate/id1503558830/reviews)** | [4.0 (1.1K ratings)](https://appshunter.io/ios/app/biggerfive/id1570072414/reviews) |
| Number of ratings | 10 | **1.1K** |
| Positive reviews | — | 40.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 47 MB | 153 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Callahan](https://appshunter.io/developer/1503558829) | [BIGGERFIVE TECHNOLOGY CO., LIMITED](https://appshunter.io/developer/1571453719) |

## What reviewers say

### Callahan’s Karate

[App page](https://appshunter.io/ios/app/callahans-karate/id1503558830)

This app connects members and prospective students with martial arts programs. It allows event registration, program enrollment, and provides access to school updates, curriculum, and personal progress history. Users can also message instructors and refer friends.

**Highlights:** Event registration, Program enrollment, School updates, Curriculum viewing, Payment and rank history, Messaging

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

**In-app purchases:** none


### BIGGERFIVE

[App page](https://appshunter.io/ios/app/biggerfive/id1570072414)

This app acts as your personal health steward, integrating health data recording, movement tracking, and wearable device control. It synchronizes data with Apple Health, allowing you to monitor and manage your fitness, sleep, and weight goals. Share your achievements and manage family accounts for a comprehensive health overview.

**Highlights:** Health data recording, Movement track recording, Wearable device control, Sleep monitoring, Activity and exercise tracking, Customizable watch dials, Reminder settings, Family account management

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Tracks steps, heart rate, and sleep
- 👍 Good for kids, easy to use
- 🚀 Waterproof and durable
- 👍 Customizable watch faces
- 👍 Encourages physical activity

**What reviewers complain about**

- 🐛 Frequent disconnects from app
- 🐛 Inaccurate step/sleep tracking
- 🐛 Time resets after charging
- 🐛 Login issues, can't log in
- 🔋 Battery drains quickly

**Reported bugs**

- App crashes frequently
- Can't sync multiple devices
- Incorrect time/date display
- Bluetooth connectivity issues
- Login button remains greyed out

**Requested features**

- More watch face options
- Ability to set alarms/reminders
- Sync data with other fitness apps
- Parental controls to limit usage
- Add more sports/activity tracking


## Frequently asked questions

### Is Callahan’s Karate free?

Callahan’s Karate is free to download, with no in-app purchases.

### Is BIGGERFIVE free?

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

### Which has better reviews, Callahan’s Karate or BIGGERFIVE?

Callahan’s Karate is rated higher. Callahan’s Karate averages 5.0 out of 5 from 10 ratings, while BIGGERFIVE averages 4.0 from 1.1K ratings.

### Do Callahan’s Karate or BIGGERFIVE have ads?

Neither Callahan’s Karate nor BIGGERFIVE shows ads.

### Which is updated more often, Callahan’s Karate or BIGGERFIVE?

Callahan’s Karate ships an update every 4 months, and BIGGERFIVE every 2 months. Most recently, Callahan’s Karate was updated on October 10, 2026 and BIGGERFIVE on October 17, 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.*