# Otis Presentation Maker vs PPT AI Slide Maker, Gamma app

The clearest difference is rating: Otis Presentation Maker at 5.0 against PPT AI Slide Maker, Gamma app's 4.5. Otis Presentation Maker also leads on update cadence (every 10 days vs every 2 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Otis Presentation Maker sells 2 in-app purchases, starting at $19.99 per month and PPT AI Slide Maker, Gamma app sells 6 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Otis Presentation Maker holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Otis Presentation Maker ships an update every 10 days, PPT AI Slide Maker, Gamma app every 2 months. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Otis Presentation Maker | PPT AI Slide Maker, Gamma app |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/otis-presentation-maker/id6747890600/reviews)** | [4.5 (2 ratings)](https://appshunter.io/ios/app/ppt-ai-slide-maker-gamma-app/id6779916040/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 2 months |
| Monetization | Freemium | Free with in-app purchases |
| Size | 319 MB | 39 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hokfam Ltd](https://appshunter.io/developer/1823223269) | [ZSoft Labs](https://appshunter.io/developer/1859113204) |

## What reviewers say

### Otis Presentation Maker

[App page](https://appshunter.io/ios/app/otis-presentation-maker/id6747890600)

Effortlessly create professional presentations in seconds with AI-powered tools. Generate slides from a topic description, customize with professional templates, and visualize data with real charts. Export to various formats for seamless sharing.

**Highlights:** AI-generated slides from topic descriptions, 15+ real chart types with live data visualization, 40+ professional templates across 18+ industries, Export to PowerPoint, PDF, and web sharing, Real-time collaboration, Smart layout optimization

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OTIS Premium Monthly | $19.99 | per month |
| OTIS Premium Yearly | $149.99 | per year |


### PPT AI Slide Maker, Gamma app

[App page](https://appshunter.io/ios/app/ppt-ai-slide-maker-gamma-app/id6779916040)

Effortlessly create structured presentations from a single sentence. This AI-powered tool generates professional slide decks with formatted content and visuals, saving you hours. Customize your deck's style, tone, and audience before exporting as PPT or PDF.

**Highlights:** One-prompt presentation creation, Convert any file to slides, Automatic slide structure, Smart content organization, Premium design elements, Fully customizable presentations, Export as PPT or PDF

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Magic AI Slides Maker Plus Weekly | $5.99 | per 7 days |
| Magic AI Slides Maker Plus Monthly | $10.99 | per month |
| Magic AI Slides Maker Pro Weekly | $19.99 | per 7 days |
| Magic AI Slides Maker Pro Monthly | $34.99 | per month |
| Magic AI Slides Plus Six Months | $34.99 | per 6 months |
| Magic AI Slides Maker Pro Year | $219.99 | per year |


## Frequently asked questions

### Is Otis Presentation Maker free?

Otis Presentation Maker is free to download, with in-app purchases available.

### Is PPT AI Slide Maker, Gamma app free?

PPT AI Slide Maker, Gamma app is free to download, with in-app purchases available.

### Which has better reviews, Otis Presentation Maker or PPT AI Slide Maker, Gamma app?

Otis Presentation Maker is rated higher. Otis Presentation Maker averages 5.0 out of 5 from 1 ratings, while PPT AI Slide Maker, Gamma app averages 4.5 from 2 ratings.

### Do Otis Presentation Maker or PPT AI Slide Maker, Gamma app have ads?

Neither Otis Presentation Maker nor PPT AI Slide Maker, Gamma app shows ads.

### Which is updated more often, Otis Presentation Maker or PPT AI Slide Maker, Gamma app?

Otis Presentation Maker ships an update every 10 days, and PPT AI Slide Maker, Gamma app every 2 months. Most recently, Otis Presentation Maker was updated on October 30, 2026 and PPT AI Slide Maker, Gamma app on October 31, 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.*