# UDAR vs Caya

The clearest difference is ads: UDAR at none against Caya's shown. UDAR also leads on monetization model (free vs ad-supported). Caya's advantage is update cadence (every 13 months vs every 27 months) and device support (3 vs 1). On price, rating, ratings volume 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 — 5.0 for UDAR against 5.0 for Caya. Both are backed by a comparable volume of ratings — 3 and 3 respectively.

UDAR ships an update every 27 months, Caya every 13 months. The most recent releases landed on September 23, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | UDAR | Caya |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/udar/id1564719664/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/caya/id1609673541/reviews) |
| Number of ratings | 3 | 3 |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 27 months | **Every 13 months** |
| Monetization | **Free** | Ad-supported |
| Size | 22 MB | 100 MB |
| Requires iOS | 16.6 | **14.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [UDAR INDUSTRIES INC](https://appshunter.io/developer/1564719786) | [TRUE WELLNESS WANTAGH INC.](https://appshunter.io/developer/1609673543) |

## What reviewers say

### UDAR

[App page](https://appshunter.io/ios/app/udar/id1564719664)

This app offers a beginner-friendly kickboxing program designed to build confidence and promote weight loss through fat burning and muscle toning. It focuses on the 'AFTERBURN' effect to continue calorie burning for days after a class, with personalized one-on-one attention for proven results.

**Highlights:** Beginner-friendly kickboxing, Weight loss and fat burning, Muscle toning, AFTERBURN effect for extended calorie burn, One-on-one attention, Confidence building

**Features:** macOS Compatibility

**In-app purchases:** none


### Caya

[App page](https://appshunter.io/ios/app/caya/id1609673541)

Easily plan and schedule your fitness classes directly from your mobile device. View class schedules, sign up, check promotions, and access studio contact information and social pages. Optimize your time and enhance convenience for class bookings.

**Highlights:** View class schedules, Sign up for classes, View ongoing promotions, Access studio location, View contact information, Click through to social pages

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is UDAR free?

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

### Is Caya free?

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

### Which has better reviews, UDAR or Caya?

UDAR and Caya are both rated 5.0 out of 5 on the App Store, from 3 and 3 ratings respectively.

### Do UDAR or Caya have ads?

Caya shows ads; UDAR does not.

### Which is updated more often, UDAR or Caya?

UDAR ships an update every 27 months, and Caya every 13 months. Most recently, UDAR was updated on September 23, 2026 and Caya on October 10, 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.*