# Brownlee PS vs SynStrategy

The clearest difference is device support: Brownlee PS at 3 against SynStrategy's 1. Brownlee PS also leads on iOS requirement (14.0 vs 16.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Brownlee PS ships an update every 6 months, SynStrategy every 3 months. The most recent releases landed on October 10, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Brownlee PS | SynStrategy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (9 ratings)](https://appshunter.io/ios/app/synstrategy/id6755611244/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 months** |
| Monetization | — | Free |
| Size | 56 MB | 36 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [BUSINESS SYSTEM SOLUTIONS (N.I.) LTD](https://appshunter.io/developer/549288322) | [Willi M. Amberg](https://appshunter.io/developer/1854863487) |

## What reviewers say

### Brownlee PS

[App page](https://appshunter.io/ios/app/brownlee-ps/id1459174899)

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

**In-app purchases:** none


### SynStrategy

[App page](https://appshunter.io/ios/app/synstrategy/id6755611244)

This app categorizes organic reactions by the functional groups they form, aiding chemists in synthetic analysis. It offers over 500 transformations and 400 synthesis examples, with detailed subdivisions for clarity.

**Highlights:** Reactions categorized by functional group, 27 main functional group categories, Over 500 transformations, Over 400 total synthesis examples, Subdivided functional group categories, Highlights synthetic use cases

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Brownlee PS free?

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

### Is SynStrategy free?

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

### Do Brownlee PS or SynStrategy have ads?

Neither Brownlee PS nor SynStrategy shows ads.

### Which is updated more often, Brownlee PS or SynStrategy?

Brownlee PS ships an update every 6 months, and SynStrategy every 3 months. Most recently, Brownlee PS was updated on October 10, 2026 and SynStrategy on October 16, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*