# Crestellar Academy vs Calcable

The clearest difference is ads: Crestellar Academy at none against Calcable's shown. Calcable's advantage is iOS requirement (13.0 vs 18.6). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Crestellar Academy sells 10 in-app purchases, starting at $4.99 per month and Calcable sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Crestellar Academy ships an update weekly, Calcable every 5 days. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Crestellar Academy | Calcable |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Weekly | **Every 5 days** |
| Size | 88 MB | 38 MB |
| Requires iOS | 18.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Crestellar Academy Limited](https://appshunter.io/developer/1765192168) | [Ophyin AI Limited](https://appshunter.io/developer/6781308452) |

## What reviewers say

### Crestellar Academy

[App page](https://appshunter.io/ios/app/crestellar-academy/id6670178477)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus | $4.99 | per month |
| Pro | $9.99 | per month |
| Max 5x | $14.99 | per month |
| Max 20x | $34.99 | per month |
| Plus | $49.99 | per year |
| Pro | $99.99 | per year |
| Max 5x | $149.99 | per year |
| Max 20x | $299.99 | per year |
| 500 Tokens | $5.99 | one-time |
| 2,000 Tokens | $19.99 | one-time |


### Calcable

[App page](https://appshunter.io/ios/app/calcable-dse-calculator/id6782670288)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Credit Pack | $1.99 | one-time |
| AI Monthly Pass | $1.99 | one-time |
| Student Pro | $5.99 | one-time |
| Master Pro Lifetime | $11.99 | one-time |


## Frequently asked questions

### Is Crestellar Academy free?

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

### Is Calcable free?

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

### Do Crestellar Academy or Calcable have ads?

Calcable shows ads; Crestellar Academy does not.

### Which is updated more often, Crestellar Academy or Calcable?

Crestellar Academy ships an update weekly, and Calcable every 5 days. Most recently, Crestellar Academy was updated on November 8, 2026 and Calcable on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*