# ZMaintenance vs D

The clearest difference is update cadence: D at every 3 weeks against ZMaintenance's every 4 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.

ZMaintenance ships an update every 4 months, D every 3 weeks. The most recent releases landed on June 7, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | ZMaintenance | D |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 61 MB | 24 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gulliver srl](https://appshunter.io/developer/518244902) | [davide Sbreviglieri](https://appshunter.io/developer/562172174) |

## What reviewers say

### ZMaintenance

[App page](https://appshunter.io/ios/app/zmaintenance/id1201199558)

Streamline maintenance operations with a mobile app that allows technicians to log interventions, capture data, and manage work orders in real-time. It integrates with existing systems and leverages device features like GPS and voice recognition for efficient field service.

**Highlights:** Automate maintenance logging, Real-time work order management, Integrates with existing platforms, Utilizes device GPS and camera, Supports electronic signatures, Voice recognition for data entry

**Features:** Apple Wallet

**In-app purchases:** none


### D

[App page](https://appshunter.io/ios/app/d-tec/id1509408218)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ZMaintenance free?

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

### Is D free?

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

### Do ZMaintenance or D have ads?

Neither ZMaintenance nor D shows ads.

### Which is updated more often, ZMaintenance or D?

ZMaintenance ships an update every 4 months, and D every 3 weeks. Most recently, ZMaintenance was updated on June 7, 2026 and D on September 24, 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.*