# D/4AM vs HiddenChat

The clearest difference is monetization model: D/4AM at free against HiddenChat's free with in-app purchases. D/4AM also leads on ratings volume (7 vs 1) and device support (3 vs 1). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for D/4AM against 5.0 for HiddenChat. That said, the two scores are not equally well evidenced: D/4AM has 7 ratings behind it against 1, so its average is the more settled of the two.

D/4AM ships an update every 3 weeks, HiddenChat monthly. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | D/4AM | HiddenChat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (7 ratings)](https://appshunter.io/ios/app/d4am/id1404179282/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/hiddenchat-offline-ai-chat/id6789322330/reviews) |
| Number of ratings | **7** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 68 MB | 739 MB |
| Requires iOS | **15.5** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Datch Inc](https://appshunter.io/developer/1750405023) | [ANIMALADA](https://appshunter.io/developer/1384996780) |

## What reviewers say

### D/4AM

[App page](https://appshunter.io/ios/app/d4am/id1404179282)

This application streamlines on-site plant maintenance by integrating with SAP PM. It offers a user-friendly platform for managing tasks, enhanced by conversational AI and multimodal inputs for frontline workers.

**Highlights:** Real-time plant maintenance management, SAP PM integration, Intuitive user interface, Conversational AI, Multimodal inputs, Task management platform

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

**In-app purchases:** none


### HiddenChat

[App page](https://appshunter.io/ios/app/hiddenchat-offline-ai-chat/id6789322330)

This AI chat application operates entirely on your device, ensuring all your conversations remain private and secure. It offers fast, offline assistance for writing, summarizing, and translating without requiring any setup or account creation. Enjoy daily free usage with an optional one-time purchase to remove limits.

**Highlights:** Runs entirely on device, No setup or account needed, Offline functionality, Write, summarize, translate, Lightweight for older devices, One-time purchase to remove limits

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is D/4AM free?

D/4AM is free to download, with no in-app purchases.

### Is HiddenChat free?

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

### Which has better reviews, D/4AM or HiddenChat?

D/4AM and HiddenChat are both rated 5.0 out of 5 on the App Store, from 7 and 1 ratings respectively.

### Do D/4AM or HiddenChat have ads?

Neither D/4AM nor HiddenChat shows ads.

### Which is updated more often, D/4AM or HiddenChat?

D/4AM ships an update every 3 weeks, and HiddenChat monthly. Most recently, D/4AM was updated on November 2, 2026 and HiddenChat on October 31, 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.*