# 世界通 vs EMspec

The clearest difference is iOS requirement: 世界通 at 12.0 against EMspec's 17.5. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 3, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | 世界通 | EMspec |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 53 MB | 3 MB |
| Requires iOS | **12.0** | 17.5 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [VIA Technologies, Inc.](https://appshunter.io/developer/781392359) | [EMspec](https://appshunter.io/developer/1407698355) |

## What reviewers say

### 世界通

[App page](https://appshunter.io/ios/app/id1215605786)

**Features:** Vision Pro support

**In-app purchases:** none


### EMspec

[App page](https://appshunter.io/ios/app/emspec/id1407698356)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 世界通 free?

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

### Is EMspec free?

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

### Do 世界通 or EMspec have ads?

Neither 世界通 nor EMspec shows ads.

### Which is updated more often, 世界通 or EMspec?

世界通 ships an update every 2 months, and EMspec every 2 months. Most recently, 世界通 was updated on October 3, 2026 and EMspec 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.*