# Plank Workout Challenge vs R.I.O

The clearest difference is in-app purchases: R.I.O at none against Plank Workout Challenge's 4. R.I.O also leads on ads (none vs shown) and update cadence (every 9 days vs every 5 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Plank Workout Challenge sells 4 in-app purchases, starting at $3.99 per 7 days. R.I.O asks for nothing beyond the download.

Plank Workout Challenge ships an update every 5 months, R.I.O every 9 days. The most recent releases landed on October 7, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Plank Workout Challenge | R.I.O |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (129 ratings)](https://appshunter.io/ios/app/plank-workout-challenge/id1536575452/reviews)** | — |
| Number of ratings | **129** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 9 days** |
| Monetization | Free with in-app purchases | — |
| Size | 120 MB | 125 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [ohealth apps studio](https://appshunter.io/developer/1536575454) | [IDEAEDU CONSULTANT TECHNOLOGIES PRIVTAE LIMITED](https://appshunter.io/developer/1518037126) |

## What reviewers say

### Plank Workout Challenge

[App page](https://appshunter.io/ios/app/plank-workout-challenge/id1536575452)

This app offers a 30-day challenge with various plank exercises to strengthen your core, tone your abs, and improve posture. It caters to beginners and advanced users with adjustable holding times and exercise variations for effective home workouts.

**Highlights:** 30-day plank exercise program, Static and dynamic plank variations, Core and abs toning, Posture improvement, Beginner to advanced levels, Calorie burning

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Features | $3.99 | per 7 days |
| Premium Features | $9.99 | per month |
| Premium Features | $29.99 | per year |
| Premium Workout | $4.99 | one-time |


### R.I.O

[App page](https://appshunter.io/ios/app/rio/id6737279673)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Plank Workout Challenge free?

Plank Workout Challenge is free to download, with in-app purchases available.

### Is R.I.O free?

R.I.O is free to download, with no in-app purchases.

### Do Plank Workout Challenge or R.I.O have ads?

Plank Workout Challenge shows ads; R.I.O does not.

### Which is updated more often, Plank Workout Challenge or R.I.O?

Plank Workout Challenge ships an update every 5 months, and R.I.O every 9 days. Most recently, Plank Workout Challenge was updated on October 7, 2026 and R.I.O on October 14, 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.*