# Quantin vs i自由

The clearest difference is in-app purchases: Quantin at none against i自由's 1. Quantin also leads on iOS requirement (10.3 vs 18.0). i自由's advantage is update cadence (every 6 days vs every 3 months). On price, ads and device support there is nothing between them.

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

Quantin ships an update every 3 months, i自由 every 6 days. The most recent releases landed on October 4, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Quantin | i自由 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 days** |
| Size | 25 MB | 39 MB |
| Requires iOS | **10.3** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [LADONNEE Consulting SARL](https://appshunter.io/developer/1588731787) | [利华 陈](https://appshunter.io/developer/1825131597) |

## What reviewers say

### Quantin

[App page](https://appshunter.io/ios/app/quantin/id1588731485)

**Features:** macOS Compatibility

**In-app purchases:** none


### i自由

[App page](https://appshunter.io/ios/app/i/id6748957414)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 会员资格（永久） | $7.99 | one-time |


## Frequently asked questions

### Is Quantin free?

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

### Is i自由 free?

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

### Do Quantin or i自由 have ads?

Neither Quantin nor i自由 shows ads.

### Which is updated more often, Quantin or i自由?

Quantin ships an update every 3 months, and i自由 every 6 days. Most recently, Quantin was updated on October 4, 2026 and i自由 on October 1, 2026.

---

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