# i自由 vs 退休计算器

The clearest difference is update cadence: 退休计算器 at every 2 days against i自由's every 6 days. 退休计算器 also leads on iOS requirement (15.1 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. i自由 sells 3 in-app purchases, starting at $0.99 per month and 退休计算器 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

i自由 ships an update every 6 days, 退休计算器 every 2 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | i自由 | 退休计算器 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 2 days** |
| Size | 42 MB | 36 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [利华 陈](https://appshunter.io/developer/1825131597) | [涛 沈](https://appshunter.io/developer/1885419027) |

## What reviewers say

### i自由

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

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| iFree | $0.99 | per month |
| iFree | $9.99 | per year |
| 会员资格（永久） | $14.99 | one-time |


### 退休计算器

[App page](https://appshunter.io/ios/app/id6761247140)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 解锁全部高级功能 | $4.99 | one-time |


## Frequently asked questions

### Is i自由 free?

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

### Is 退休计算器 free?

退休计算器 is free to download, with in-app purchases available.

### Do i自由 or 退休计算器 have ads?

Neither i自由 nor 退休计算器 shows ads.

### Which is updated more often, i自由 or 退休计算器?

i自由 ships an update every 6 days, and 退休计算器 every 2 days. Most recently, i自由 was updated on October 28, 2026 and 退休计算器 on October 31, 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.*