Callahan’s Karate vs BIGGERFIVE
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Callahan’s Karate
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.
- Event registration
- Program enrollment
- School updates
- Curriculum viewing
- Payment and rank history
- Messaging
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This app is for members and those who are interested in our award winning programs. * Register for our events * Enroll in our martial arts programs * Get School Updates * Send messages * View our curriculum * View payment, rank and attendance history * Refer your friends * Quick access to our class schedule
BIGGERFIVE
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.
- Health data recording
- Movement track recording
- Wearable device control
- Sleep monitoring
- Activity and exercise tracking
- Customizable watch dials
- Reminder settings
- Family account management
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BIGGERFIVE is sports and health App with new features. -It integrates such functions as health data recording, movement track recording and wearable device control, acting as your exclusive health steward. - it can easily record all data from wearable devices, so that you can better master your own sports health data! After connecting your wearable device to the BIGGERFIVE App, you have access to: [Manage Health]: Record and manage the monitoring data on HR, sleep, and other data; [Record Activities]: Record your daily walking steps, calories and other activity data, and supports viewing complete records by day, week and month; [Record Exercise]: Record the data of walking, riding, running, walking and other sports, including the track, heart rate, speed and other sports data.; [Change Dial]: it supports the replacement of dial in app. After the app chooses to replace the dial, the bracelet will be updated synchronously, and more dial will be updated continuously [Set Reminder]: set alarm clock, call reminder, message notification and sedentary reminder to become your right-hand assistant in your life; [Record Sleep]: Record your sleep data, including sleep duration, deep sleep, light sleep and rapid eye movements (REM), in order to monitor and improve your sleep quality; [Record Weight]: Record your weight trends and set your weight goal, encouraging you to achieve the daily exercise goal; [Share Achievements]: If you use BIGGERFIVE App to monitor your excercises continuously, virtual medals will be awarded when you reaches milestones. You can share your weekly exercise information for interaction with your friends. [Family Account] You can bind and manage devices for your children and other family members, and you can view health and exercise data [Manager children sport] You can manager your child to use the App and paired device BIGGERFIVE App supports multiple languages, and it will support more wearable devices in the future, bringing you more wonderful experiences!
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Callahan’s Karate | BIGGERFIVE |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (10 ratings) — better | 4.0 (1.1K ratings) |
| Positive reviews | — | 40.9% of reviews |
| Number of ratings | 10 | 1.1K — better |
| Update frequency | Every 4 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 14.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 47 MB | 153 MB |
| Age rating | 9+ | 4+ |
| Developer | Callahan | BIGGERFIVE TECHNOLOGY CO., LIMITED |
Customer experience
Callahan’s Karate
BIGGERFIVE
Bugs and requests
Callahan’s Karate
Not enough reviews yet to summarise bugs or requests.
BIGGERFIVE
Reported bugs
5 issues- App crashes frequently
- Can't sync multiple devices
- Incorrect time/date display
- Bluetooth connectivity issues
- Login button remains greyed out
Requested features
5 requests- 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
In-app purchases
Callahan’s Karate
No in-app purchases
BIGGERFIVE
No in-app purchases
Questions
Is Callahan’s Karate free?
Is BIGGERFIVE free?
Which has better reviews, Callahan’s Karate or BIGGERFIVE?
Do Callahan’s Karate or BIGGERFIVE have ads?
Which is updated more often, Callahan’s Karate or BIGGERFIVE?
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