# Stack vs MicroHabit Physics

The clearest difference is ads: Stack at none against MicroHabit Physics's shown. Stack also leads on iOS requirement (15.1 vs 18.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Stack sells 3 in-app purchases, starting at $3.99 per month and MicroHabit Physics sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Stack ships an update every 6 days, MicroHabit Physics every 10 days. The most recent releases landed on October 13, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Stack | MicroHabit Physics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/microhabit-physics/id6779247649/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 6 days** | Every 10 days |
| Monetization | — | Free with in-app purchases |
| Size | 62 MB | 16 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Naveen Senapathi](https://appshunter.io/developer/1889130875) | [Khawaja Salman Nadeem](https://appshunter.io/developer/6771928141) |

## What reviewers say

### Stack

[App page](https://appshunter.io/ios/app/stack-routine-tracker/id6761363465)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stack Pro Monthly | $3.99 | per month |
| Stack Pro Annual | $39.99 | per year |
| Stack Pro Lifetime | $79.99 | one-time |


### MicroHabit Physics

[App page](https://appshunter.io/ios/app/microhabit-physics/id6779247649)

This app helps you understand the long-term impact of your daily habits. It visualizes your progress, identifies habits that help or hinder you, and allows you to explore how changes might affect your overall trajectory.

**Highlights:** Track daily habits and consistency, Visualize habit momentum and trajectory, Identify habits that help or hinder progress, Explore 'what-if' habit change scenarios, View analytics and weekly reviews, Create custom habits or use templates, Home and Lock Screen widgets

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $1.99 | per month |
| Pro Yearly | $14.99 | per year |
| Lifetime Access | $29.99 | one-time |


## Frequently asked questions

### Is Stack free?

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

### Is MicroHabit Physics free?

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

### Do Stack or MicroHabit Physics have ads?

MicroHabit Physics shows ads; Stack does not.

### Which is updated more often, Stack or MicroHabit Physics?

Stack ships an update every 6 days, and MicroHabit Physics every 10 days. Most recently, Stack was updated on October 13, 2026 and MicroHabit Physics on October 21, 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.*