# Systemic Habits vs Two Days

The clearest difference is in-app purchases: Systemic Habits at none against Two Days's 3. Systemic Habits also leads on update cadence (every 4 days vs every 3 weeks) and iOS requirement (15.0 vs 18.6). On price, ads and device support there is nothing between them.

Both are free to download. Two Days sells 3 in-app purchases, starting at $4.99 per month. Systemic Habits asks for nothing beyond the download.

Systemic Habits ships an update every 4 days, Two Days every 3 weeks. Both last shipped on November 5, 2026.

## The numbers

| Metric | Systemic Habits | Two Days |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/systemic-habits/id6760133668/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 3 weeks |
| Monetization | Free | — |
| Size | 9 MB | 16 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Mustafa Abu Daham](https://appshunter.io/developer/1882816452) | [Devforge Agency](https://appshunter.io/developer/1725546874) |

## What reviewers say

### Systemic Habits

[App page](https://appshunter.io/ios/app/systemic-habits/id6760133668)

This app helps you build positive daily routines and reduce unwanted habits through a structured system. It focuses on consistency and awareness rather than pressure or complex scoring, making habit change achievable.

**Highlights:** Smart Habit Tracking, Custom Reminders, Life Categories, AI Habit Suggestions, Cloud Sync, Export Data, Archive & Recovery

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

**In-app purchases:** none


### Two Days

[App page](https://appshunter.io/ios/app/two-days-habit-tracker/id6763483288)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Two Days Pro (Monthly) | $4.99 | per month |
| Two Days Pro (Yearly) | $34.99 | per year |
| 2Days Lifetime | $89.99 | one-time |


## Frequently asked questions

### Is Systemic Habits free?

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

### Is Two Days free?

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

### Do Systemic Habits or Two Days have ads?

Neither Systemic Habits nor Two Days shows ads.

### Which is updated more often, Systemic Habits or Two Days?

Systemic Habits ships an update every 4 days, and Two Days every 3 weeks. Most recently, Systemic Habits was updated on November 5, 2026 and Two Days on November 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.*