# Physical Constants vs GCP

The clearest difference is in-app purchases: Physical Constants at none against GCP's 2. Physical Constants also leads on iOS requirement (12.0 vs 15.0). GCP's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 9 months). On price and device support there is nothing between them.

Both are free to download. GCP sells 2 one-off in-app purchases. Physical Constants asks for nothing beyond the download.

Physical Constants ships an update every 9 months, GCP every 2 weeks. The most recent releases landed on November 11, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Physical Constants | GCP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (3 ratings)](https://appshunter.io/ios/app/physical-constants-ml/id837679891/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 9 months | **Every 2 weeks** |
| Monetization | Ad-supported | — |
| Size | 25 MB | 44 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Takuya Ishikawa](https://appshunter.io/developer/468311118) | [EXAMCERT PTY LTD](https://appshunter.io/developer/1830664214) |

## What reviewers say

### Physical Constants

[App page](https://appshunter.io/ios/app/physical-constants-ml/id837679891)

Access a comprehensive list of physical constants, organized by category for easy searching. This app supports all AppStore languages and allows users to report corrections via email.

**Highlights:** Physical constants database, Categorized by topic, Search functionality, Multi-language support, User feedback for corrections

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

**In-app purchases:** none


### GCP

[App page](https://appshunter.io/ios/app/gcp-pca-cloud-architect-2026/id6757184069)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 200 AI Credits | $1.99 | one-time |
| Unlock Premium | $5.99 | one-time |


## Frequently asked questions

### Is Physical Constants free?

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

### Is GCP free?

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

### Do Physical Constants or GCP have ads?

Physical Constants shows ads; GCP does not.

### Which is updated more often, Physical Constants or GCP?

Physical Constants ships an update every 9 months, and GCP every 2 weeks. Most recently, Physical Constants was updated on November 11, 2026 and GCP on November 9, 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.*