# i vs Progressly

The clearest difference is in-app purchases: i at none against Progressly's 1. i also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). Progressly's advantage is update cadence (every 4 weeks vs every 2 months). On price and ads there is nothing between them.

Both are free to download. Progressly sells 1 one-off in-app purchase. i asks for nothing beyond the download.

i ships an update every 2 months, Progressly every 4 weeks. The most recent releases landed on October 10, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | i | Progressly |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 weeks** |
| Monetization | Free | — |
| Size | 265 MB | 3 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [iBODY.,LTD (Tokyo)](https://appshunter.io/developer/1142049521) | [Yoshifumi Sato](https://appshunter.io/developer/6780413827) |

## What reviewers say

### i

[App page](https://appshunter.io/ios/app/i-body/id1142049522)

Visualize your body's composition and shape in 3D using data from a body scanner and composition analyzer. Examine fat, muscle, and bone structure layer by layer, and track your physical changes over time with side-by-side 3D comparisons.

**Highlights:** 3D body visualization, Body composition analysis, Fat, muscle, and bone reference, Numerical body size data, Historical body change comparison

**In-app purchases:** none


### Progressly

[App page](https://appshunter.io/ios/app/progressly-body-progress/id6789591055)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock everything | $4.90 | one-time |


## Frequently asked questions

### Is i free?

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

### Is Progressly free?

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

### Do i or Progressly have ads?

Neither i nor Progressly shows ads.

### Which is updated more often, i or Progressly?

i ships an update every 2 months, and Progressly every 4 weeks. Most recently, i was updated on October 10, 2026 and Progressly on October 14, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*