# Weights & Biases vs OpenMark

The clearest difference is price: Weights & Biases at Free against OpenMark's $9.99. Weights & Biases also leads on update cadence (weekly vs every 6 months). OpenMark's advantage is chart position (#56 vs unranked) and device support (3 vs 1). On review sentiment, ads, in-app purchases and iOS requirement there is nothing between them.

Weights & Biases is free to download; OpenMark costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Weights & Biases ships an update weekly, OpenMark every 6 months. Both last shipped on November 5, 2026.

## The numbers

| Metric | Weights & Biases | OpenMark |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[4.1 (14 ratings)](https://appshunter.io/ios/app/weights-and-biases/id6755162576/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | **76.9% of reviews** | 71.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 6 months |
| Monetization | **Free** | Paid |
| Best chart rank | — | **#56** |
| Size | 49 MB | 8 MB |
| Requires iOS | 18.0 | 18 |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Weights and Biases](https://appshunter.io/developer/1852334234) | [Rotate, LLC.](https://appshunter.io/developer/1435998437) |

## What reviewers say

### Weights & Biases

[App page](https://appshunter.io/ios/app/weights-and-biases/id6755162576)

Monitor machine learning experiments in real time from your mobile device. Get notified about important events like run completion or metric changes. Quickly review results and track key performance indicators for your training runs.

**Highlights:** Monitor live and completed runs, View training curves, Track loss, accuracy, and custom metrics, Receive run completion notifications, Get alerted on key metric changes, Sanity-check results quickly

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

**In-app purchases:** none


### OpenMark

[App page](https://appshunter.io/ios/app/openmark-markdown-viewer/id6759467015)

**Currently charting:** #56 Top Paid · Developer Tools (US App Store)

View and render markdown files with advanced features like Mermaid diagrams and LaTeX math. Supports various themes, code highlighting, and offline access. Ideal for developers and writers working with markdown on iOS devices.

**Highlights:** Mermaid diagram rendering, LaTeX math support, Code block highlighting, GitHub-style alerts, Interactive checkboxes, Offline functionality, Multiple themes

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Weights & Biases free?

Weights & Biases is free to download, with no in-app purchases.

### Is OpenMark free?

OpenMark costs $9.99, with no in-app purchases.

### Do Weights & Biases or OpenMark have ads?

Neither Weights & Biases nor OpenMark shows ads.

### Which is updated more often, Weights & Biases or OpenMark?

Weights & Biases ships an update weekly, and OpenMark every 6 months. Most recently, Weights & Biases was updated on November 5, 2026 and OpenMark 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.*