# IntervalEdge vs Gravity Defying Fitness

The clearest difference is device support: Gravity Defying Fitness at 3 against IntervalEdge's 1. Gravity Defying Fitness also leads on iOS requirement (15.0 vs 17.5). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. IntervalEdge sells 2 in-app purchases, starting at $2.99 per month and Gravity Defying Fitness sells 3 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

IntervalEdge ships an update every 6 days, Gravity Defying Fitness weekly. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | IntervalEdge | Gravity Defying Fitness |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Weekly |
| Size | 1 MB | 53 MB |
| Requires iOS | 17.5 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Karen Karapetyan](https://appshunter.io/developer/1092956865) | [Esan Waterman](https://appshunter.io/developer/1896697017) |

## What reviewers say

### IntervalEdge

[App page](https://appshunter.io/ios/app/intervaledge-training-timer/id6737814810)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fitness Timer Monthly Plan | $2.99 | per month |
| Fitness Timer Yearly Plan | $19.99 | per year |


### Gravity Defying Fitness

[App page](https://appshunter.io/ios/app/gravity-defying-fitness/id6769886300)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro Athlete | $6.99 | per month |
| Annual Pro Athlete | $69.99 | per year |
| Custom Training & Meal Plan | $44.99 | one-time |


## Frequently asked questions

### Is IntervalEdge free?

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

### Is Gravity Defying Fitness free?

Gravity Defying Fitness is free to download, with in-app purchases available.

### Do IntervalEdge or Gravity Defying Fitness have ads?

Neither IntervalEdge nor Gravity Defying Fitness shows ads.

### Which is updated more often, IntervalEdge or Gravity Defying Fitness?

IntervalEdge ships an update every 6 days, and Gravity Defying Fitness weekly. Most recently, IntervalEdge was updated on October 25, 2026 and Gravity Defying Fitness on October 28, 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.*