# Plasmids X vs RayCrest Lab Calculator

The clearest difference is rating: RayCrest Lab Calculator at 4.7 against Plasmids X's 3.4. RayCrest Lab Calculator also leads on in-app purchases (none vs 14) and iOS requirement (17.0 vs 26.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Plasmids X sells 14 in-app purchases, starting at $1.99 per month. RayCrest Lab Calculator asks for nothing beyond the download.

RayCrest Lab Calculator holds the better App Store score, 4.7 against 3.4. Both are backed by a comparable volume of ratings — 7 and 3 respectively.

Plasmids X ships an update monthly, RayCrest Lab Calculator every 2 months. The most recent releases landed on October 9, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Plasmids X | RayCrest Lab Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (7 ratings)](https://appshunter.io/ios/app/plasmids-x/id1524584676/reviews) | **[4.7 (3 ratings)](https://appshunter.io/ios/app/raycrest-lab-calculator/id6785651551/reviews)** |
| Number of ratings | **7** | 3 |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 18 MB | 7 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Amin Mahpour](https://appshunter.io/developer/1524584678) | [RAYCREST SOFTWARE LLC](https://appshunter.io/developer/1847966144) |

## What reviewers say

### Plasmids X

[App page](https://appshunter.io/ios/app/plasmids-x/id1524584676)

Design, create, and analyze custom DNA plasmids with this intuitive molecular genetics tool. Supports importing, editing, and sharing plasmids, with powerful in silico analysis features for researchers and students.

**Highlights:** Create plasmids from sequences, Import from .dna and Genbank files, Edit plasmids by adding features, In silico analysis (sequence alignment, PCR, digestion), Share and collaborate on plasmids

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

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Yearly | $9.99 | per year |
| A cup of coffee! | $1.99 | one-time |
| Split View Support | $1.99 | one-time |
| Manual Cloning | $3.99 | one-time |
| In-silico PCR Support | $3.99 | one-time |
| NCBI Entrez Support | $3.99 | one-time |
| Local Alignment Support | $3.99 | one-time |
| A box of joe! | $4.99 | one-time |
| BLAST Support | $4.99 | one-time |
| ApE File Support | $4.99 | one-time |
| Genbank Support | $4.99 | one-time |
| dna File Support | $5.99 | one-time |
| All Features | $24.99 | one-time |


### RayCrest Lab Calculator

[App page](https://appshunter.io/ios/app/raycrest-lab-calculator/id6785651551)

This app assists researchers, students, and lab teams with essential calculations for preparing buffers, solutions, and dilutions. It provides practical guidance for weighing solids, mixing stocks, and titration, with built-in tools for buffer charts, recipes, and protocol timers.

**Highlights:** Buffer preparation guidance, Henderson-Hasselbalch recipes, Stock mixing and titration, Solution and dilution calculations, Mass/volume conversions, Protocol timers, Saved recipes and compounds

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Plasmids X free?

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

### Is RayCrest Lab Calculator free?

RayCrest Lab Calculator is free to download, with no in-app purchases.

### Which has better reviews, Plasmids X or RayCrest Lab Calculator?

RayCrest Lab Calculator is rated higher. Plasmids X averages 3.4 out of 5 from 7 ratings, while RayCrest Lab Calculator averages 4.7 from 3 ratings.

### Do Plasmids X or RayCrest Lab Calculator have ads?

Neither Plasmids X nor RayCrest Lab Calculator shows ads.

### Which is updated more often, Plasmids X or RayCrest Lab Calculator?

Plasmids X ships an update monthly, and RayCrest Lab Calculator every 2 months. Most recently, Plasmids X was updated on October 9, 2026 and RayCrest Lab Calculator on October 10, 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.*