# PepCal vs SpinCube

The clearest difference is price: SpinCube at Free against PepCal's $2.99. SpinCube also leads on update cadence (every 2 days vs every 6 weeks). PepCal's advantage is in-app purchases (none vs 5) and rating (4.3 vs 4.0). On ads and device support there is nothing between them.

SpinCube is free to download; PepCal costs $2.99 up front. SpinCube sells 5 in-app purchases, starting at $1.99 per 7 days. PepCal asks for nothing beyond the download.

PepCal holds the better App Store score, 4.3 against 4.0. That said, the two scores are not equally well evidenced: PepCal has 35 ratings behind it against 6, so its average is the more settled of the two.

PepCal ships an update every 6 weeks, SpinCube every 2 days. The most recent releases landed on October 16, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | PepCal | SpinCube |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.3 (35 ratings)](https://appshunter.io/ios/app/pepcal-peptide-calculator/id6467717437/reviews)** | [4.0 (6 ratings)](https://appshunter.io/ios/app/spincube-cube-solver-plus-timer/id6801983902/reviews) |
| Number of ratings | **35** | 6 |
| Positive reviews | 79.2% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 7 MB | 24 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [A & A Design Inc.](https://appshunter.io/developer/1222491747) | [辉 邓](https://appshunter.io/developer/1683717989) |

## What reviewers say

### PepCal

[App page](https://appshunter.io/ios/app/pepcal-peptide-calculator/id6467717437)

This ad-free tool assists scientists and researchers with peptide reconstitution and mixing. It provides guidelines for calculating water requirements and exploring mixing ratios for peptide sequences. The app features an intuitive interface, dark mode, and the ability to save favorite calculations.

**Highlights:** Peptide reconstitution calculations, Mixing ratio exploration, Bacteriostatic water calculations, Intuitive user interface, Dark mode support, Save favorite calculations

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

**In-app purchases:** none


### SpinCube

[App page](https://appshunter.io/ios/app/spincube-cube-solver-plus-timer/id6801983902)

Solve various 3D puzzles with a camera scanner, step-by-step guidance, and a built-in timer. Learn algorithms and track your progress to improve your solving skills. Works offline on your device.

**Highlights:** Camera-based puzzle scanning, Step-by-step solving guidance, Integrated speedcubing timer, Algorithm learning and practice, Personal best tracking, Offline functionality

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $1.99 | per 7 days |
| Weekly Plan | $1.99 | per 7 days |
| Yearly | $9.99 | per year |
| Lifetime | Free | one-time |
| 24-Hour Pass | $0.99 | one-time |


## Frequently asked questions

### Is PepCal free?

PepCal costs $2.99, with no in-app purchases.

### Is SpinCube free?

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

### Which has better reviews, PepCal or SpinCube?

PepCal is rated higher. PepCal averages 4.3 out of 5 from 35 ratings, while SpinCube averages 4.0 from 6 ratings.

### Do PepCal or SpinCube have ads?

Neither PepCal nor SpinCube shows ads.

### Which is updated more often, PepCal or SpinCube?

PepCal ships an update every 6 weeks, and SpinCube every 2 days. Most recently, PepCal was updated on October 16, 2026 and SpinCube on October 6, 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.*