# OptionBridge vs NoteLM

The clearest difference is update cadence: NoteLM at every 9 days against OptionBridge's every 4 months. NoteLM also leads on device support (4 vs 1) and iOS requirement (15.1 vs 18.6). On price, ads and in-app purchases there is nothing between them.

Both are free to download. OptionBridge sells 2 in-app purchases, starting at $3.99 per month and NoteLM sells 3 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

OptionBridge ships an update every 4 months, NoteLM every 9 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | OptionBridge | NoteLM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/notelm-private-ai/id6761753447/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 9 days** |
| Monetization | — | Freemium |
| Size | 4 MB | 120 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Nicholas Daniel](https://appshunter.io/developer/1855681416) | [xuezai lan](https://appshunter.io/developer/1871106100) |

## What reviewers say

### OptionBridge

[App page](https://appshunter.io/ios/app/optionbridge/id6760360958)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OptionBridgeMonthly2 | $3.99 | per month |
| OptionBridge Annual | $24.99 | per year |


### NoteLM

[App page](https://appshunter.io/ios/app/notelm-private-ai/id6761753447)

Transform your notes, files, and voice recordings into a private, searchable AI knowledge base. Chat with your documents and find information using semantic search, all offline and without tracking.

**Highlights:** Multi-format document import, Semantic and full-text search, Chat with your knowledge base, Local LLM support, 100% offline and private, Vector search for concept matching

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $5.99 | per month |
| Pro Yearly | $59.99 | per year |
| GemmaNote Pro Lifetime | $149.99 | one-time |


## Frequently asked questions

### Is OptionBridge free?

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

### Is NoteLM free?

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

### Do OptionBridge or NoteLM have ads?

Neither OptionBridge nor NoteLM shows ads.

### Which is updated more often, OptionBridge or NoteLM?

OptionBridge ships an update every 4 months, and NoteLM every 9 days. Most recently, OptionBridge was updated on October 28, 2026 and NoteLM 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.*