# Dosatron vs Purpl PRO 2

The clearest difference is rating: Purpl PRO 2 at 4.0 against Dosatron's 3.3. Purpl PRO 2 also leads on review sentiment (25% vs 17%). Dosatron's advantage is in-app purchases (none vs 4) and ratings volume (18 vs 2). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Purpl PRO 2 sells 4 in-app purchases, starting at $19.99 per month. Dosatron asks for nothing beyond the download.

Purpl PRO 2 holds the better App Store score, 4.0 against 3.3. That said, the two scores are not equally well evidenced: Dosatron has 18 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 17% of Dosatron's written reviews are positive against 25% of Purpl PRO 2's.

Dosatron ships an update every 2 months, Purpl PRO 2 every 5 months. The most recent releases landed on October 23, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Dosatron | Purpl PRO 2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (18 ratings)](https://appshunter.io/ios/app/dosatron-dosing-calculator/id795027401/reviews) | **[4.0 (2 ratings)](https://appshunter.io/ios/app/purpl-pro-2/id6479393669/reviews)** |
| Number of ratings | **18** | 2 |
| Positive reviews | 16.7% of reviews | **25.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 159 MB | 42 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Dosatron International S.A.S](https://appshunter.io/developer/795027404) | [PURPL SCIENTIFIC INC](https://appshunter.io/developer/1446726720) |

## What reviewers say

### Dosatron

[App page](https://appshunter.io/ios/app/dosatron-dosing-calculator/id795027401)

This application helps users manage their water-powered dosing pumps. It provides quick access to pump support information, environmental adjustments, and service contact details. Users can also scan pump QR codes for technical documentation and stay updated on news and product developments.

**Highlights:** Pump support information, Environmental adjustment guidance, Service and support contact, QR code scanning for documentation, News and product updates

**In-app purchases:** none


### Purpl PRO 2

[App page](https://appshunter.io/ios/app/purpl-pro-2/id6479393669)

Analyze cannabis potency and chemical composition from cultivation to consumption. Get immediate analysis with your smartphone and a pocket-sized device, saving measurements to the cloud. Compare your results to averages and manage your data effectively.

**Highlights:** Real-time potency measurement, Cloud saving of measurements, View measurement spectrum, Compare to average spectrum, Rename and delete measurements, Request account deletion

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advanced Tier | $19.99 | per month |
| Advanced Tier | $49.99 | per 3 months |
| Advanced Tier | $99.99 | per 6 months |
| Advanced Tier | $199.99 | per year |


## Frequently asked questions

### Is Dosatron free?

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

### Is Purpl PRO 2 free?

Purpl PRO 2 is free to download, with in-app purchases available.

### Which has better reviews, Dosatron or Purpl PRO 2?

Purpl PRO 2 is rated higher. Dosatron averages 3.3 out of 5 from 18 ratings, while Purpl PRO 2 averages 4.0 from 2 ratings.

### Do Dosatron or Purpl PRO 2 have ads?

Neither Dosatron nor Purpl PRO 2 shows ads.

### Which is updated more often, Dosatron or Purpl PRO 2?

Dosatron ships an update every 2 months, and Purpl PRO 2 every 5 months. Most recently, Dosatron was updated on October 23, 2026 and Purpl PRO 2 on October 8, 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.*