# Runner's Shadow vs Obsidian Flow Studio

The clearest difference is update cadence: Obsidian Flow Studio at every 2 weeks against Runner's Shadow's every 6 weeks. Obsidian Flow Studio also leads on iOS requirement (16.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Runner's Shadow ships an update every 6 weeks, Obsidian Flow Studio every 2 weeks. The most recent releases landed on November 3, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | Runner's Shadow | Obsidian Flow Studio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/runners-shadow/id1579410078/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 26 MB | 192 MB |
| Requires iOS | 26.0 | **16.0** |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Alumra Ltd](https://appshunter.io/developer/764172195) | [Obsidian Flow LLC](https://appshunter.io/developer/1793356707) |

## What reviewers say

### Runner's Shadow

[App page](https://appshunter.io/ios/app/runners-shadow/id1579410078)

This app acts as a comprehensive companion for outdoor runners, consolidating run history from various sources. It helps track personal records, analyze courses, manage laps, and journal run experiences. Additionally, it offers shoe mileage tracking and photo integration for a complete running log.

**Highlights:** Consolidated run history from any supported app, Course tracking and personal bests, Interval lap management, Journaling for run reflections, Shoe mileage and lifespan tracking, Integration with Apple Health/Activity, Apple Watch app for on-the-go tracking

**Features:** Apple Watch app

**In-app purchases:** none


### Obsidian Flow Studio

[App page](https://appshunter.io/ios/app/obsidian-flow-studio/id6775567219)

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

**In-app purchases:** none


## Frequently asked questions

### Is Runner's Shadow free?

Runner's Shadow is free to download, with no in-app purchases.

### Is Obsidian Flow Studio free?

Obsidian Flow Studio is free to download, with no in-app purchases.

### Do Runner's Shadow or Obsidian Flow Studio have ads?

Neither Runner's Shadow nor Obsidian Flow Studio shows ads.

### Which is updated more often, Runner's Shadow or Obsidian Flow Studio?

Runner's Shadow ships an update every 6 weeks, and Obsidian Flow Studio every 2 weeks. Most recently, Runner's Shadow was updated on November 3, 2026 and Obsidian Flow Studio on November 13, 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.*