# IO vs 计数器

The clearest difference is in-app purchases: 计数器 at none against IO's 1. IO's advantage is update cadence (every 2 weeks vs every 3 weeks). On ads, device support and iOS requirement there is nothing between them.

IO ships an update every 2 weeks, 计数器 every 3 weeks. Both last shipped on November 5, 2026.

## The numbers

| Metric | IO | 计数器 |
| --- | --- | --- |
| Price | **Free** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Size | 15 MB | 5 MB |
| Requires iOS | 17.6 | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | +4 | 4+ |
| Developer | [CJ Solution UG (haftungsbeschraenkt)](https://appshunter.io/developer/1870234861) | [创宏 陈](https://appshunter.io/developer/1884920634) |

## What reviewers say

### IO

[App page](https://appshunter.io/ios/app/io-inspector/id6758009180)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version Lifetime | $17.99 | one-time |


### 计数器

[App page](https://appshunter.io/ios/app/id6764015181)

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

**In-app purchases:** none


## Frequently asked questions

### Is IO free?

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

### Is 计数器 free?

Pricing for 计数器 is not currently listed on the App Store.

### Do IO or 计数器 have ads?

Neither IO nor 计数器 shows ads.

### Which is updated more often, IO or 计数器?

IO ships an update every 2 weeks, and 计数器 every 3 weeks. Most recently, IO was updated on November 5, 2026 and 计数器 on November 5, 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.*