# Watchman Service vs Tekelek Diagnostics

The clearest difference is update cadence: Watchman Service at every 4 months against Tekelek Diagnostics's every 10 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.

Watchman Service ships an update every 4 months, Tekelek Diagnostics every 10 months. The most recent releases landed on October 30, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | Watchman Service | Tekelek Diagnostics |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 10 months |
| Size | 40 MB | 12 MB |
| Requires iOS | 15.1 | **15** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KINGSPAN WATER & ENERGY LIMITED](https://appshunter.io/developer/574414697) | [Rochester Sensors, LLC](https://appshunter.io/developer/1006999301) |

## What reviewers say

### Watchman Service

[App page](https://appshunter.io/ios/app/watchman-service/id1559014553)

**Features:** Vision Pro support

**In-app purchases:** none


### Tekelek Diagnostics

[App page](https://appshunter.io/ios/app/tekelek-diagnostics/id1670926813)

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

**In-app purchases:** none


## Frequently asked questions

### Is Watchman Service free?

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

### Is Tekelek Diagnostics free?

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

### Do Watchman Service or Tekelek Diagnostics have ads?

Neither Watchman Service nor Tekelek Diagnostics shows ads.

### Which is updated more often, Watchman Service or Tekelek Diagnostics?

Watchman Service ships an update every 4 months, and Tekelek Diagnostics every 10 months. Most recently, Watchman Service was updated on October 30, 2026 and Tekelek Diagnostics on November 12, 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.*