# ZENTRA Utility vs Daymark

The clearest difference is in-app purchases: ZENTRA Utility at none against Daymark's 1. ZENTRA Utility also leads on iOS requirement (13.0 vs 17.0). Daymark's advantage is update cadence (daily vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. Daymark sells 1 one-off in-app purchase. ZENTRA Utility asks for nothing beyond the download.

ZENTRA Utility ships an update every 4 months, Daymark daily. The most recent releases landed on September 30, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | ZENTRA Utility | Daymark |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (6 ratings)](https://appshunter.io/ios/app/zentra-utility/id1181233790/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 12.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Daily** |
| Monetization | Free | — |
| Size | 91 MB | 3 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [METER Group, Inc.](https://appshunter.io/developer/1792460527) | [Adam hollett](https://appshunter.io/developer/1463630899) |

## What reviewers say

### ZENTRA Utility

[App page](https://appshunter.io/ios/app/zentra-utility/id1181233790)

Configure and manage METER Data Loggers wirelessly via Bluetooth. View sensor data, adjust settings, test connectivity, and update firmware for compatible devices.

**Highlights:** Wireless Bluetooth connection, View sensor data, Configure device settings, Test cellular connection, Update firmware, Calibrate sensors

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

**In-app purchases:** none


### Daymark

[App page](https://appshunter.io/ios/app/daymark-countdowns/id6786417055)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Daymark Pro | $3.99 | one-time |


## Frequently asked questions

### Is ZENTRA Utility free?

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

### Is Daymark free?

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

### Do ZENTRA Utility or Daymark have ads?

Neither ZENTRA Utility nor Daymark shows ads.

### Which is updated more often, ZENTRA Utility or Daymark?

ZENTRA Utility ships an update every 4 months, and Daymark daily. Most recently, ZENTRA Utility was updated on September 30, 2026 and Daymark on October 10, 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.*