# Watchlog vs TRL TPMS

The clearest difference is update cadence: TRL TPMS at weekly against Watchlog's every 3 weeks. Watchlog's advantage is iOS requirement (10.0 vs 12.2). 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.

Watchlog ships an update every 3 weeks, TRL TPMS weekly. Both last shipped on October 25, 2026.

## The numbers

| Metric | Watchlog | TRL TPMS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Size | 35 MB | 60 MB |
| Requires iOS | **10.0** | 12.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hydrotechnik UK Test Engineering Ltd](https://appshunter.io/developer/1515531717) | [TRAILER RESOURCES LIMITED](https://appshunter.io/developer/1727339326) |

## What reviewers say

### Watchlog

[App page](https://appshunter.io/ios/app/watchlog/id1520386269)

**Features:** macOS Compatibility

**In-app purchases:** none


### TRL TPMS

[App page](https://appshunter.io/ios/app/trl-tpms/id6476616680)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Watchlog free?

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

### Is TRL TPMS free?

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

### Do Watchlog or TRL TPMS have ads?

Neither Watchlog nor TRL TPMS shows ads.

### Which is updated more often, Watchlog or TRL TPMS?

Watchlog ships an update every 3 weeks, and TRL TPMS weekly. Most recently, Watchlog was updated on October 25, 2026 and TRL TPMS 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.*