# Principia vs Equal Space

The clearest difference is price: Principia at Free against Equal Space's $0.99. Equal Space's advantage is in-app purchases (none vs 3) and ads (none vs shown). On update cadence, device support and iOS requirement there is nothing between them.

Principia is free to download; Equal Space costs $0.99 up front. Principia sells 3 one-off in-app purchases. Equal Space asks for nothing beyond the download.

Principia ships an update every 2 months, Equal Space every 6 weeks. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Principia | Equal Space |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[2.0 (2 ratings)](https://appshunter.io/ios/app/principia-smart-ai-studio/id6740216432/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Ad-supported | — |
| Size | 26 MB | 1 MB |
| Requires iOS | 17.6 | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Edgar Zuniga](https://appshunter.io/developer/1647129574) | [Andrew Robinson](https://appshunter.io/developer/389951880) |

## What reviewers say

### Principia

[App page](https://appshunter.io/ios/app/principia-smart-ai-studio/id6740216432)

A private, customizable AI assistant for chat, writing, coding, and image analysis. It adapts to your needs, allowing you to choose AI models, set personalities, and keep your data local and private. Create content, code, and learn faster with this flexible AI tool.

**Highlights:** Customizable AI models, Personalized AI behavior, Context-aware chat, Image analysis and insights, Content creation, Code generation and debugging, Learning and research tools, Privacy-first, local storage

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 50 Credits | $0.99 | one-time |
| 150 Credits | $1.99 | one-time |
| 600 Credits | $6.99 | one-time |


### Equal Space

[App page](https://appshunter.io/ios/app/equal-space/id6743153922)

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

**In-app purchases:** none


## Frequently asked questions

### Is Principia free?

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

### Is Equal Space free?

Equal Space costs $0.99, with no in-app purchases.

### Do Principia or Equal Space have ads?

Principia shows ads; Equal Space does not.

### Which is updated more often, Principia or Equal Space?

Principia ships an update every 2 months, and Equal Space every 6 weeks. Most recently, Principia was updated on October 24, 2026 and Equal Space on October 22, 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.*