# SigmaNote vs DeckPrompt

The clearest difference is device support: DeckPrompt at 4 against SigmaNote's 2. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. SigmaNote sells 4 in-app purchases, starting at $8.99 per month and DeckPrompt sells 1 in-app purchase, starting at $9.99 per year. Whichever you choose, the download price is not the number that matters.

SigmaNote ships an update weekly, DeckPrompt every 10 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | SigmaNote | DeckPrompt |
| --- | --- | --- |
| 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 10 days |
| Monetization | Freemium | — |
| Size | 90 MB | 6 MB |
| Requires iOS | 18.0 | 18.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [SignifyID LLC](https://appshunter.io/developer/1793292360) | [X8IQ Ltd](https://appshunter.io/developer/1879752259) |

## 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 |


### DeckPrompt

[App page](https://appshunter.io/ios/app/deckprompt/id6760260042)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DeckPrompt AI Subscription. | $9.99 | per year |


## Frequently asked questions

### Is SigmaNote free?

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

### Is DeckPrompt free?

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

### Do SigmaNote or DeckPrompt have ads?

Neither SigmaNote nor DeckPrompt shows ads.

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

SigmaNote ships an update weekly, and DeckPrompt every 10 days. Most recently, SigmaNote was updated on October 30, 2026 and DeckPrompt on October 31, 2026.

---

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