# Outside In. vs StackFlow

The clearest difference is in-app purchases: Outside In. at none against StackFlow's 2. On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. StackFlow sells 2 in-app purchases, starting at $4.99 per month. Outside In. asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Outside In. against 5.0 for StackFlow. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

## The numbers

| Metric | Outside In. | StackFlow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/outside-in/id6759529344/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/stackflow-supplement-planner/id6761324946/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 5 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Christopher Bennett](https://appshunter.io/developer/1459777634) | [航东 郭](https://appshunter.io/developer/1874353215) |

## What reviewers say

### Outside In.

[App page](https://appshunter.io/ios/app/outside-in/id6759529344)

Stream live outdoor sounds from one iPhone to another over Wi-Fi. Use a spare phone as an outdoor microphone to fall asleep to real-time nature sounds, reducing late-night scrolling. Audio plays continuously in the background, even with the screen locked.

**Highlights:** Live audio streaming over Wi-Fi, Use spare phone as outdoor mic, Background audio playback, Screen lock compatible, Face-down listening mode, No cloud or recording, No account required

**Features:** macOS Compatibility

**In-app purchases:** none


### StackFlow

[App page](https://appshunter.io/ios/app/stackflow-supplement-planner/id6761324946)

This app helps you manage complex supplement routines by scanning labels, providing AI-driven timing suggestions based on ingredient interactions, and tracking your body's response. It visualizes synergy and spacing for optimal intake.

**Highlights:** AI-powered supplement timing, Supplement label scanning, Ingredient-level intelligence, Synergy and spacing visualization, Daily routine tracking, Body response logging, Daily insights feed

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| StackFlow Pro Monthly | $4.99 | per month |
| StackFlow Pro Annual | $29.99 | per year |


## Frequently asked questions

### Is Outside In. free?

Outside In. is free to download, with no in-app purchases.

### Is StackFlow free?

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

### Which has better reviews, Outside In. or StackFlow?

Outside In. and StackFlow are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Outside In. or StackFlow have ads?

Neither Outside In. nor StackFlow shows ads.

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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.*