# 小鸟计算器 vs FoxFeed

The clearest difference is in-app purchases: 小鸟计算器 at none against FoxFeed's 4. 小鸟计算器 also leads on iOS requirement (15.0 vs 18.0). FoxFeed's advantage is update cadence (fortnightly vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. FoxFeed sells 4 in-app purchases, starting at $0.99 per 7 days. 小鸟计算器 asks for nothing beyond the download.

小鸟计算器 ships an update every 5 months, FoxFeed fortnightly. The most recent releases landed on October 6, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | 小鸟计算器 | FoxFeed |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Fortnightly** |
| Size | 18 MB | 106 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 9+ | 4+ |
| Developer | [惠丹 罗](https://appshunter.io/developer/1786147102) | [承金 洪](https://appshunter.io/developer/1745991813) |

## What reviewers say

### 小鸟计算器

[App page](https://appshunter.io/ios/app/id6755356686)

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

**In-app purchases:** none


### FoxFeed

[App page](https://appshunter.io/ios/app/foxfeed-rss-reader/id6762222185)

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan | $0.99 | per 7 days |
| Monthly Plan | $2.99 | per month |
| Annual Plan | $12.99 | per year |
| Lifetime Plan | $29.99 | one-time |


## Frequently asked questions

### Is 小鸟计算器 free?

小鸟计算器 is free to download, with no in-app purchases.

### Is FoxFeed free?

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

### Do 小鸟计算器 or FoxFeed have ads?

Neither 小鸟计算器 nor FoxFeed shows ads.

### Which is updated more often, 小鸟计算器 or FoxFeed?

小鸟计算器 ships an update every 5 months, and FoxFeed fortnightly. Most recently, 小鸟计算器 was updated on October 6, 2026 and FoxFeed on October 14, 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.*