# Knowledgy vs TheoryAI

The clearest difference is in-app purchases: TheoryAI at none against Knowledgy's 1. TheoryAI also leads on iOS requirement (13.4 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Knowledgy sells 1 one-off in-app purchase. TheoryAI asks for nothing beyond the download.

Knowledgy ships an update weekly, TheoryAI every 6 days. The most recent releases landed on October 13, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Knowledgy | TheoryAI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/theoryai/id6615087642/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | **Every 6 days** |
| Monetization | — | Free |
| Size | 29 MB | 65 MB |
| Requires iOS | 15.6 | **13.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [The Datum Company](https://appshunter.io/developer/1424384309) | [Eduardo Velasco](https://appshunter.io/developer/1576077014) |

## What reviewers say

### Knowledgy

[App page](https://appshunter.io/ios/app/knowledgy/id1424384310)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $2.99 | one-time |


### TheoryAI

[App page](https://appshunter.io/ios/app/theoryai/id6615087642)

This AI-powered tool provides free, unlimited assistance for homework problems across various subjects and languages. It offers fast, accurate solutions with step-by-step explanations to enhance understanding.

**Highlights:** Unlimited free problem-solving, Supports multiple subjects and languages, Fast, parallel solution delivery, Step-by-step explanations for learning, Clean and intuitive user interface

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Knowledgy free?

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

### Is TheoryAI free?

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

### Do Knowledgy or TheoryAI have ads?

Neither Knowledgy nor TheoryAI shows ads.

### Which is updated more often, Knowledgy or TheoryAI?

Knowledgy ships an update weekly, and TheoryAI every 6 days. Most recently, Knowledgy was updated on October 13, 2026 and TheoryAI on October 20, 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.*