# InkSpace vs RayCrest Lab Calculator

The clearest difference is in-app purchases: RayCrest Lab Calculator at none against InkSpace's 6. InkSpace's advantage is update cadence (every 10 days vs every 2 months) and ratings volume (10 vs 3). On price, rating, ads and device support there is nothing between them.

Both are free to download. InkSpace sells 6 one-off in-app purchases. RayCrest Lab Calculator asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.6 for InkSpace against 4.7 for RayCrest Lab Calculator. Both are backed by a comparable volume of ratings — 10 and 3 respectively.

InkSpace ships an update every 10 days, RayCrest Lab Calculator every 2 months. The most recent releases landed on October 8, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | InkSpace | RayCrest Lab Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (10 ratings)](https://appshunter.io/ios/app/inkspace/id6741228360/reviews) | **[4.7 (3 ratings)](https://appshunter.io/ios/app/raycrest-lab-calculator/id6785651551/reviews)** |
| Number of ratings | **10** | 3 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 2 months |
| Monetization | Paid | **Free** |
| Size | 67 MB | 7 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Tyler Sherman](https://appshunter.io/developer/598091745) | [RAYCREST SOFTWARE LLC](https://appshunter.io/developer/1847966144) |

## What reviewers say

### InkSpace

[App page](https://appshunter.io/ios/app/inkspace/id6741228360)

This digital notebook app offers complete creative freedom for note-taking, brainstorming, sketching, and journaling. Customize notebooks with various templates, page styles, and colors. Organize and access notes seamlessly across devices, with offline functionality.

**Highlights:** Unlimited custom notebooks, Write, draw, and sketch with stylus support, Insert custom shapes, text, and media, Searchable tags and bookmarks, Sync across all devices, Offline functionality

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fitness Pack | $0.99 | one-time |
| Finance Pack | $0.99 | one-time |
| Handwriting Pack | $0.99 | one-time |
| Planner Pack | $0.99 | one-time |
| Teaching Pack | $0.99 | one-time |
| Journal Pack | $0.99 | 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 InkSpace free?

InkSpace 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, InkSpace or RayCrest Lab Calculator?

RayCrest Lab Calculator is rated higher. InkSpace averages 4.6 out of 5 from 10 ratings, while RayCrest Lab Calculator averages 4.7 from 3 ratings.

### Do InkSpace or RayCrest Lab Calculator have ads?

Neither InkSpace nor RayCrest Lab Calculator shows ads.

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

InkSpace ships an update every 10 days, and RayCrest Lab Calculator every 2 months. Most recently, InkSpace was updated on October 8, 2026 and RayCrest Lab Calculator on September 24, 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.*