# Positional Encoding vs Trig Solver

The clearest difference is in-app purchases: Positional Encoding at none against Trig Solver's 3. Trig Solver's advantage is iOS requirement (16.4 vs 18.5). On price, ads and device support there is nothing between them.

Both are free to download. Trig Solver sells 3 in-app purchases, starting at $4.99 per 7 days. Positional Encoding asks for nothing beyond the download.

## The numbers

| Metric | Positional Encoding | Trig Solver |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | — |
| Size | 2 MB | 54 MB |
| Requires iOS | 18.5 | **16.4** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [carl nohre](https://appshunter.io/developer/452344755) | [Mobin Akhter](https://appshunter.io/developer/1812505286) |

## What reviewers say

### Positional Encoding

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

**In-app purchases:** none


### Trig Solver

[App page](https://appshunter.io/ios/app/trig-solver-trigonify/id6792816870)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Trigonify Pro Weekly | $4.99 | per 7 days |
| Trigonify Pro Yearly | $34.99 | per year |
| Trigonify Pro Lifetime | $69.99 | one-time |


## Frequently asked questions

### Is Positional Encoding free?

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

### Is Trig Solver free?

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

### Do Positional Encoding or Trig Solver have ads?

Neither Positional Encoding nor Trig Solver shows ads.

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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.*