# Ultraviolet vs Slyde

The clearest difference is in-app purchases: Ultraviolet at none against Slyde's 3. Ultraviolet also leads on iOS requirement (11.0 vs 17.0). Slyde's advantage is update cadence (every 5 days vs every 23 months). On price, ads and device support there is nothing between them.

Both are free to download. Slyde sells 3 one-off in-app purchases. Ultraviolet asks for nothing beyond the download.

Ultraviolet ships an update every 23 months, Slyde every 5 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Ultraviolet | Slyde |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/ultraviolet/id1576208393/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 23 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 21 MB | 5 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [claxio.com](https://appshunter.io/developer/1165013290) | [UNICGLOBAL ENGINEERING LTD](https://appshunter.io/developer/1874337557) |

## What reviewers say

### Ultraviolet

[App page](https://appshunter.io/ios/app/ultraviolet/id1576208393)

Book appointments and stay updated on exclusive news and special promotions. This app also allows you to check your prepaid balance at any time. Register to discover all its features.

**Highlights:** Book appointments, Exclusive news and promotions, Check prepaid balance, App-only user benefits, User registration

**Features:** macOS Compatibility

**In-app purchases:** none


### Slyde

[App page](https://appshunter.io/ios/app/slyde-ai-presentations/id6762256929)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter — 20 Coins | $4.99 | one-time |
| Pro — 60 Coins | $12.99 | one-time |
| Business — 150 Coins | $29.99 | one-time |


## Frequently asked questions

### Is Ultraviolet free?

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

### Is Slyde free?

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

### Do Ultraviolet or Slyde have ads?

Neither Ultraviolet nor Slyde shows ads.

### Which is updated more often, Ultraviolet or Slyde?

Ultraviolet ships an update every 23 months, and Slyde every 5 days. Most recently, Ultraviolet was updated on November 3, 2026 and Slyde on November 5, 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.*