# SigmaNote vs Onuri

The clearest difference is update cadence: SigmaNote at weekly against Onuri's every 2 months. On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. SigmaNote sells 4 in-app purchases, starting at $8.99 per month and Onuri sells 1 in-app purchase, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

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

SigmaNote ships an update weekly, Onuri every 2 months. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | SigmaNote | Onuri |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/sigmanote/id6744374542/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/onuri-notes-and-second-brain/id6796028277/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 months |
| Monetization | Freemium | Freemium |
| Size | 90 MB | 5 MB |
| Requires iOS | 18.0 | **17.6** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [SignifyID LLC](https://appshunter.io/developer/1793292360) | [John Henry Roche](https://appshunter.io/developer/1889537848) |

## What reviewers say

### SigmaNote

[App page](https://appshunter.io/ios/app/sigmanote/id6744374542)

This app acts as an AI-powered knowledge hub, allowing users to capture, manage, learn from, and create knowledge across various formats. It uses AI agents to organize content, answer questions, and facilitate voice-driven writing and content creation.

**Highlights:** Capture knowledge from diverse sources, AI agents for organization and retrieval, Learn through conversation and listening, Voice-driven AI writing and content creation, Unified knowledge lifecycle management, Cross-format knowledge integration

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SigmaNote Premium Monthly | $8.99 | per month |
| SigmaNote Premium Plus Monthly | $12.99 | per month |
| SigmaNote Premium Yearly | $80.99 | per year |
| SigmaNote Premium Plus Yearly | $116.99 | per year |


### Onuri

[App page](https://appshunter.io/ios/app/onuri-notes-and-second-brain/id6796028277)

Organize your thoughts and memories with a powerful note-taking app. It offers advanced search, filtering by people, places, and topics, and connects related entries. Premium features provide deeper insights and customization options.

**Highlights:** Advanced text search, Filter by people, places, dates, topics, Connected terms and related entries, Automatic draft saving, iCloud sync, TXT and CSV export, Premium insights and patterns

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Onuri Premium | $2.99 | per month |


## Frequently asked questions

### Is SigmaNote free?

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

### Is Onuri free?

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

### Which has better reviews, SigmaNote or Onuri?

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

### Do SigmaNote or Onuri have ads?

Neither SigmaNote nor Onuri shows ads.

### Which is updated more often, SigmaNote or Onuri?

SigmaNote ships an update weekly, and Onuri every 2 months. Most recently, SigmaNote was updated on November 5, 2026 and Onuri 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.*