# Positional Encoding vs Circle Calculator

The clearest difference is in-app purchases: Positional Encoding at none against Circle Calculator's 7. Positional Encoding also leads on ads (none vs shown). Circle Calculator's advantage is iOS requirement (13.0 vs 18.5). On price, update cadence and device support there is nothing between them.

Both are free to download. Circle Calculator sells 7 in-app purchases, starting at $1.99 per 7 days. Positional Encoding asks for nothing beyond the download.

Positional Encoding ships an update monthly, Circle Calculator every 5 weeks. The most recent releases landed on September 26, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Positional Encoding | Circle Calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 5 weeks |
| Size | 2 MB | 72 MB |
| Requires iOS | 18.5 | **13.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [carl nohre](https://appshunter.io/developer/452344755) | [AHMET DEMIR](https://appshunter.io/developer/1849165331) |

## What reviewers say

### Positional Encoding

[App page](https://appshunter.io/ios/app/positional-encoding/id6749869150)

**In-app purchases:** none


### Circle Calculator

[App page](https://appshunter.io/ios/app/circle-calculator-geometry/id6760240001)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Circle Pro Weekly | $1.99 | per 7 days |
| Circle Pro Weekly | $3.99 | per 7 days |
| Circle Pro Monthly | $3.99 | per month |
| Circle Pro Monthly | $7.99 | per month |
| Circle Pro Annual | $24.99 | per year |
| Circle Pro Annual | $49.99 | per year |
| Circle Calculator Pro Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Positional Encoding free?

Positional Encoding is free to download, with no in-app purchases.

### Is Circle Calculator free?

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

### Do Positional Encoding or Circle Calculator have ads?

Circle Calculator shows ads; Positional Encoding does not.

### Which is updated more often, Positional Encoding or Circle Calculator?

Positional Encoding ships an update monthly, and Circle Calculator every 5 weeks. Most recently, Positional Encoding was updated on September 26, 2026 and Circle Calculator on September 30, 2026.

---

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