# ST22 Connect | Convoy Zero vs Digital Trip Log

The clearest difference is update cadence: ST22 Connect | Convoy Zero at every 2 months against Digital Trip Log's every 6 months. 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.

ST22 Connect | Convoy Zero ships an update every 2 months, Digital Trip Log every 6 months. The most recent releases landed on September 30, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | ST22 Connect | Convoy Zero | Digital Trip Log |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Size | 81 MB | 13 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [ST22connect Korlatolt felelossegu tarsasag](https://appshunter.io/developer/1807615095) | [PetTrack Zrt.](https://appshunter.io/developer/1535503256) |

## What reviewers say

### ST22 Connect | Convoy Zero

[App page](https://appshunter.io/ios/app/st22-connect-convoy-zero/id6744416445)

**Features:** macOS Compatibility

**In-app purchases:** none


### Digital Trip Log

[App page](https://appshunter.io/ios/app/digital-trip-log/id6746964136)

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

**In-app purchases:** none


## Frequently asked questions

### Is ST22 Connect | Convoy Zero free?

ST22 Connect | Convoy Zero is free to download, with no in-app purchases.

### Is Digital Trip Log free?

Digital Trip Log is free to download, with no in-app purchases.

### Do ST22 Connect | Convoy Zero or Digital Trip Log have ads?

Neither ST22 Connect | Convoy Zero nor Digital Trip Log shows ads.

### Which is updated more often, ST22 Connect | Convoy Zero or Digital Trip Log?

ST22 Connect | Convoy Zero ships an update every 2 months, and Digital Trip Log every 6 months. Most recently, ST22 Connect | Convoy Zero was updated on September 30, 2026 and Digital Trip Log on October 18, 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.*