# DRUIDapp vs Greenpix Docs

The clearest difference is in-app purchases: Greenpix Docs at none against DRUIDapp's 2. Greenpix Docs also leads on iOS requirement (13.0 vs 16.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. DRUIDapp sells 2 one-off in-app purchases. Greenpix Docs asks for nothing beyond the download.

DRUIDapp ships an update monthly, Greenpix Docs every 2 months. The most recent releases landed on October 1, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | DRUIDapp | Greenpix Docs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (168 ratings)](https://appshunter.io/ios/app/druidapp/id1107595146/reviews)** | — |
| Number of ratings | **168** | — |
| Positive reviews | 52.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 57 MB | 64 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Impairment Science, Inc.](https://appshunter.io/developer/1288634284) | [Edgar Baylon](https://appshunter.io/developer/1610229156) |

## What reviewers say

### DRUIDapp

[App page](https://appshunter.io/ios/app/druidapp/id1107595146)

This app assesses cognitive and motor function impairment using neuroscience-based tests. It offers quick or benchmark assessments to detect impairment from various causes like drugs, alcohol, fatigue, or illness. A workplace version with management controls is also available.

**Highlights:** Cognitive and motor function assessment, 1-minute Rapid Test, 3-minute Benchmark Test, Detects impairment from various causes, Neuroscience-based technology, Workplace management controls available

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DRUID Premium | $1.99 | one-time |
| DRUID Premium | $14.99 | one-time |

**What reviewers like**

- 👍 Useful safety check
- 👍 Good for tracking tiredness
- 👍 Helps identify optimal performance times
- 👍 Useful for long drives
- 👍 Great support

**What reviewers complain about**

- 😞 Monthly fee required
- 😞 Inaccurate with cannabis use
- 😞 Not trusted for impairment detection
- 😞 Baseline scores seem incorrect
- 😞 Inaccessible for paraplegics

**Reported bugs**

- Inconsistent results with cannabis use
- Incorrect baseline scores
- Inaccessible for paraplegic users
- App not loading or working
- Subscription required after initial use

**Requested features**

- Accessibility options for physical disabilities
- Alternative tests for users with physical limitations
- More accurate detection for cannabis users
- Improved accuracy for baseline and impairment detection
- More affordable pricing model


### Greenpix Docs

[App page](https://appshunter.io/ios/app/greenpix-docs/id6757571490)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is DRUIDapp free?

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

### Is Greenpix Docs free?

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

### Do DRUIDapp or Greenpix Docs have ads?

Neither DRUIDapp nor Greenpix Docs shows ads.

### Which is updated more often, DRUIDapp or Greenpix Docs?

DRUIDapp ships an update monthly, and Greenpix Docs every 2 months. Most recently, DRUIDapp was updated on October 1, 2026 and Greenpix Docs on October 6, 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.*