# CelioAI vs Knowto

The clearest difference is in-app purchases: CelioAI at none against Knowto's 2. CelioAI also leads on update cadence (daily vs every 10 days) and iOS requirement (15.1 vs 17.0). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Knowto sells 2 in-app purchases, starting at $0.99 per month. CelioAI asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for CelioAI against 5.0 for Knowto. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

CelioAI ships an update daily, Knowto every 10 days. The most recent releases landed on October 8, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | CelioAI | Knowto |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/celioai/id6744094527/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/knowto-instant-note-taking/id6798763650/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 10 days |
| Monetization | **Free** | Freemium |
| Size | 33 MB | 5 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Laxman Marsakatla](https://appshunter.io/developer/1806027885) | [Lumik LLC](https://appshunter.io/developer/1860645804) |

## What reviewers say

### CelioAI

[App page](https://appshunter.io/ios/app/celioai/id6744094527)

This app offers a powerful and intuitive way to search and discover content and biographies. It provides advanced keyword search, detailed user profiles, and a user-friendly interface for efficient information access.

**Highlights:** Advanced keyword search, Detailed biographies, User-friendly interface, Secure authentication, Organized search results

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

**In-app purchases:** none


### Knowto

[App page](https://appshunter.io/ios/app/knowto-instant-note-taking/id6798763650)

Capture ideas instantly with a fast, local-first note-taking app. Organize thoughts naturally with threads, tags, and attachments. Access your notes offline with optional cloud sync.

**Highlights:** Always-ready composer, Build on thoughts with threads, Search and filter notes, Attach photos and resources, Local-first storage, Background sync across devices

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Knowto Plus Monthly | $0.99 | per month |
| Knowto Plus Yearly | $9.99 | per year |


## Frequently asked questions

### Is CelioAI free?

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

### Is Knowto free?

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

### Which has better reviews, CelioAI or Knowto?

CelioAI and Knowto are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do CelioAI or Knowto have ads?

Neither CelioAI nor Knowto shows ads.

### Which is updated more often, CelioAI or Knowto?

CelioAI ships an update daily, and Knowto every 10 days. Most recently, CelioAI was updated on October 8, 2026 and Knowto on October 10, 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.*