# i自由 vs VulpFlow

The clearest difference is update cadence: i自由 at every 6 days against VulpFlow's every 4 months. VulpFlow's advantage is 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 1 one-off in-app purchase and VulpFlow sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

i自由 ships an update every 6 days, VulpFlow every 4 months. The most recent releases landed on September 14, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | i自由 | VulpFlow |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 4 months |
| Size | 39 MB | 58 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) | [Yufan Shi](https://appshunter.io/developer/1888358413) |

## What reviewers say

### 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 |


### VulpFlow

[App page](https://appshunter.io/ios/app/vulpflow-cash-flow-planner/id6761236176)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VulpFlow Pro Plan - Monthly | $4.99 | per month |
| Lifetime Access | $29.99 | one-time |


## Frequently asked questions

### Is i自由 free?

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

### Is VulpFlow free?

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

### Do i自由 or VulpFlow have ads?

Neither i自由 nor VulpFlow shows ads.

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

i自由 ships an update every 6 days, and VulpFlow every 4 months. Most recently, i自由 was updated on September 14, 2026 and VulpFlow on September 10, 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.*