# Tumbling Difficulty Calculator vs Tumbra

The clearest difference is in-app purchases: Tumbling Difficulty Calculator at none against Tumbra's 3. Tumbling Difficulty Calculator also leads on iOS requirement (13.0 vs 17.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Tumbra sells 3 in-app purchases, starting at $8.99 per month. Tumbling Difficulty Calculator asks for nothing beyond the download.

Tumbling Difficulty Calculator ships an update every 2 weeks, Tumbra fortnightly. The most recent releases landed on September 15, 2026 and August 8, 2026 respectively.

## The numbers

| Metric | Tumbling Difficulty Calculator | Tumbra |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (5 ratings)](https://appshunter.io/ios/app/tumbra/id6745959889/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | — | Free with in-app purchases |
| Size | 14 MB | 27 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yohai Wiener](https://appshunter.io/developer/1695546960) | [Bubba Hall Industries](https://appshunter.io/developer/1655710254) |

## What reviewers say

### Tumbling Difficulty Calculator

[App page](https://appshunter.io/ios/app/tumbling-difficulty-calculator/id6450893045)

**In-app purchases:** none


### Tumbra

[App page](https://appshunter.io/ios/app/tumbra/id6745959889)

This app allows tumbling athletes and coaches to analyze and improve performance. Users can draw on videos, break down movements frame-by-frame, and access a skill library with targeted workouts. It's designed to help athletes progress faster and coaches stay organized.

**Highlights:** Draw on tumbling videos, Frame-by-frame playback, Skill library with coaching cues, Skill-based workouts, Record voice critiques, Upload and capture videos

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Access | $8.99 | per month |
| All Access | $47.99 | per 6 months |
| All Access | $83.99 | per year |


## Frequently asked questions

### Is Tumbling Difficulty Calculator free?

Tumbling Difficulty Calculator is free to download, with no in-app purchases.

### Is Tumbra free?

Tumbra is free to download, with in-app purchases available.

### Do Tumbling Difficulty Calculator or Tumbra have ads?

Neither Tumbling Difficulty Calculator nor Tumbra shows ads.

### Which is updated more often, Tumbling Difficulty Calculator or Tumbra?

Tumbling Difficulty Calculator ships an update every 2 weeks, and Tumbra fortnightly. Most recently, Tumbling Difficulty Calculator was updated on September 15, 2026 and Tumbra on August 8, 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.*