# Find Molecule vs Planetary Gear Calculator

The clearest difference is price: Find Molecule at Free against Planetary Gear Calculator's $3.99. Find Molecule also leads on iOS requirement (6.0 vs 13). Planetary Gear Calculator's advantage is rating (4.7 vs 3.5) and review sentiment (75% vs 50%). On ads, in-app purchases and device support there is nothing between them.

Find Molecule is free to download; Planetary Gear Calculator costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Planetary Gear Calculator holds the better App Store score, 4.7 against 3.5. Both are backed by a comparable volume of ratings — 2 and 6 respectively. Written reviews point the same way: 50% of Find Molecule's written reviews are positive against 75% of Planetary Gear Calculator's.

## The numbers

| Metric | Find Molecule | Planetary Gear Calculator |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | [3.5 (2 ratings)](https://appshunter.io/ios/app/find-molecule/id1140792040/reviews) | **[4.7 (6 ratings)](https://appshunter.io/ios/app/planetary-gear-calculator/id1618146516/reviews)** |
| Number of ratings | 2 | **6** |
| Positive reviews | 50.0% of reviews | **75.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 46 months |
| Monetization | **Free** | Paid |
| Size | 3.7 GB | 1 MB |
| Requires iOS | **6.0** | 13 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | +4 |
| Developer | [Kirill Blinov](https://appshunter.io/developer/630833420) | [Heng Jia Liang](https://appshunter.io/developer/1532000635) |

## What reviewers say

### Find Molecule

[App page](https://appshunter.io/ios/app/find-molecule/id1140792040)

Identify chemical structures using NMR data and mass spectrometry. Instantly search a vast database of known compounds with direct links to their PubChem records.

**Highlights:** Identify structures by ¹³C NMR shifts, Identify structures by monoisotopic mass (m/z), Search database of 33 million known structures, Links to PubChem records, Instant search functionality

**Features:** macOS Compatibility

**In-app purchases:** none


### Planetary Gear Calculator

[App page](https://appshunter.io/ios/app/planetary-gear-calculator/id1618146516)

Calculate gear teeth and speed for planetary gear systems. Quickly simulate how these systems work on the fly, ideal for DIYers designing their own systems before 3D printing. Understand the formulas and components of epicyclic gear systems.

**Highlights:** Calculate gear teeth, Calculate gear speed, Simulate planetary gear systems, Design custom gear systems, Preview system functionality, Understand gear formulas

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

**In-app purchases:** none


## Frequently asked questions

### Is Find Molecule free?

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

### Is Planetary Gear Calculator free?

Planetary Gear Calculator costs $3.99, with no in-app purchases.

### Which has better reviews, Find Molecule or Planetary Gear Calculator?

Planetary Gear Calculator is rated higher. Find Molecule averages 3.5 out of 5 from 2 ratings, while Planetary Gear Calculator averages 4.7 from 6 ratings.

### Do Find Molecule or Planetary Gear Calculator have ads?

Neither Find Molecule nor Planetary Gear Calculator shows ads.

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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.*