# TimeZone Expert vs Stinger

The clearest difference is in-app purchases: TimeZone Expert at none against Stinger's 1. TimeZone Expert also leads on update cadence (every 5 days vs every 4 weeks) and device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Stinger sells 1 one-off in-app purchase. TimeZone Expert asks for nothing beyond the download.

TimeZone Expert ships an update every 5 days, Stinger every 4 weeks. Both last shipped on October 25, 2026.

## The numbers

| Metric | TimeZone Expert | Stinger |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 4 weeks |
| Size | 14 MB | 1 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Po-Han Chen](https://appshunter.io/developer/6785743236) | [Faruk Orman](https://appshunter.io/developer/1754575068) |

## What reviewers say

### TimeZone Expert

[App page](https://appshunter.io/ios/app/timezone-expert/id6785743234)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


### Stinger

[App page](https://appshunter.io/ios/app/stinger-weld-settings-calc/id6800430478)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stinger Pro | $9.99 | one-time |


## Frequently asked questions

### Is TimeZone Expert free?

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

### Is Stinger free?

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

### Do TimeZone Expert or Stinger have ads?

Neither TimeZone Expert nor Stinger shows ads.

### Which is updated more often, TimeZone Expert or Stinger?

TimeZone Expert ships an update every 5 days, and Stinger every 4 weeks. Most recently, TimeZone Expert was updated on October 25, 2026 and Stinger on October 25, 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.*