# iPTR4D vs Bus Sign

The clearest difference is update cadence: Bus Sign at every 11 days against iPTR4D's every 4 months. iPTR4D's advantage is iOS requirement (10.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

iPTR4D ships an update every 4 months, Bus Sign every 11 days. The most recent releases landed on October 14, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | iPTR4D | Bus Sign |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 11 days** |
| Size | 1 MB | 38 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [RITI Technology Inc.](https://appshunter.io/developer/369118660) | [Mak Yun Fai](https://appshunter.io/developer/1817829513) |

## What reviewers say

### iPTR4D

[App page](https://appshunter.io/ios/app/iptr4d/id556485585)

**Features:** macOS Compatibility

**In-app purchases:** none


### Bus Sign

[App page](https://appshunter.io/ios/app/bus-sign/id6792786519)

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

**In-app purchases:** none


## Frequently asked questions

### Is iPTR4D free?

iPTR4D is free to download, with no in-app purchases.

### Is Bus Sign free?

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

### Do iPTR4D or Bus Sign have ads?

Neither iPTR4D nor Bus Sign shows ads.

### Which is updated more often, iPTR4D or Bus Sign?

iPTR4D ships an update every 4 months, and Bus Sign every 11 days. Most recently, iPTR4D was updated on October 14, 2026 and Bus Sign on September 30, 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.*