# Mind Window vs MindSampler

The clearest difference is rating: Mind Window at 4.0 against MindSampler's 2.0. Mind Window also leads on ratings volume (18 vs 4). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Mind Window holds the better App Store score, 4.0 against 2.0. Both are backed by a comparable volume of ratings — 18 and 4 respectively.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 6, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | Mind Window | MindSampler |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (18 ratings)](https://appshunter.io/ios/app/mind-window/id1501731777/reviews)** | [2.0 (4 ratings)](https://appshunter.io/ios/app/mindsampler/id1617535718/reviews) |
| Number of ratings | **18** | 4 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | Free |
| Size | 85 MB | 52 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [University of Arizona](https://appshunter.io/developer/437682109) | [MindSampler Inc.](https://appshunter.io/developer/1732037708) |

## What reviewers say

### Mind Window

[App page](https://appshunter.io/ios/app/mind-window/id1501731777)

This app helps you track your thought patterns and understand how they may impact your well-being. By answering random check-ins throughout the day, you contribute to a scientific research database. Discover insights into your thinking and explore changes over time.

**Highlights:** Track thought patterns, Contribute to research database, Daily check-in reminders, Discover thinking statistics, Explore changes over time, Customizable assistant guide

**Features:** macOS Compatibility

**In-app purchases:** none


### MindSampler

[App page](https://appshunter.io/ios/app/mindsampler/id1617535718)

Participate in scientific research by answering short questions and experiments throughout your day. Contribute to understanding human thought, feelings, and behavior.

**Highlights:** Contribute to scientific understanding, Receive daily experiment notifications, Answer short questions, Enter study codes, Track daily life insights

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mind Window free?

Mind Window is free to download, with no in-app purchases.

### Is MindSampler free?

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

### Which has better reviews, Mind Window or MindSampler?

Mind Window is rated higher. Mind Window averages 4.0 out of 5 from 18 ratings, while MindSampler averages 2.0 from 4 ratings.

### Do Mind Window or MindSampler have ads?

Neither Mind Window nor MindSampler shows ads.

### Which is updated more often, Mind Window or MindSampler?

Mind Window ships an update every 2 months, and MindSampler every 2 months. Most recently, Mind Window was updated on September 6, 2026 and MindSampler on June 5, 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.*