# SigmaNote vs Sidekick Pro

SigmaNote and Sidekick Pro are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. SigmaNote sells 4 in-app purchases, starting at $8.99 per month and Sidekick Pro sells 3 in-app purchases, starting at $59.00 per month. Whichever you choose, the download price is not the number that matters.

SigmaNote ships an update weekly, Sidekick Pro every 2 weeks. Both last shipped on November 5, 2026.

## The numbers

| Metric | SigmaNote | Sidekick Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sigmanote/id6744374542/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | Freemium | — |
| Size | 90 MB | 21 MB |
| Requires iOS | 18.0 | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [SignifyID LLC](https://appshunter.io/developer/1793292360) | [Gadget Labs](https://appshunter.io/developer/1893483456) |

## 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 |


### Sidekick Pro

[App page](https://appshunter.io/ios/app/sidekick-pro/id6762234474)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus | $59.00 | per month |
| Business | $149.00 | per month |
| Ultra | $200.00 | per month |


## Frequently asked questions

### Is SigmaNote free?

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

### Is Sidekick Pro free?

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

### Do SigmaNote or Sidekick Pro have ads?

Neither SigmaNote nor Sidekick Pro shows ads.

### Which is updated more often, SigmaNote or Sidekick Pro?

SigmaNote ships an update weekly, and Sidekick Pro every 2 weeks. Most recently, SigmaNote was updated on November 5, 2026 and Sidekick Pro on November 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*