# SightKey vs Prism

The clearest difference is in-app purchases: Prism at none against SightKey's 2. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. SightKey sells 2 in-app purchases, starting at $4.99 per month. Prism asks for nothing beyond the download.

## The numbers

| Metric | SightKey | Prism |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/prism-aac/id6764692277/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 3 days |
| Monetization | — | Free |
| Size | 11 MB | 13 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 17+ | 4+ |
| Developer | [Mitsuhiro Hashimoto](https://appshunter.io/developer/509482512) | [Synalux LLC](https://appshunter.io/developer/1895881089) |

## What reviewers say

### SightKey

[App page](https://appshunter.io/ios/app/sightkey/id6761758188)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (Monthly) | $4.99 | per month |
| Premium (Yearly) | $49.99 | per year |


### Prism

[App page](https://appshunter.io/ios/app/prism-aac/id6764692277)

This communication app provides on-device AI and supports 12 languages, offering a private and accessible way for nonverbal users to express themselves. It functions fully offline and can be controlled from an Apple Watch, making communication possible anywhere, anytime.

**Highlights:** On-device AI, Apple Watch support, 12 languages, Offline functionality, Customizable vocabulary, No subscriptions or ads

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SightKey free?

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

### Is Prism free?

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

### Do SightKey or Prism have ads?

Neither SightKey nor Prism shows ads.

---

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