# Habit Builder・Atomic Habits AI vs Plainchecks

The clearest difference is update cadence: Habit Builder・Atomic Habits AI at every 2 weeks against Plainchecks's every 2 months. Habit Builder・Atomic Habits AI also leads on device support (3 vs 1) and iOS requirement (18.6 vs 26.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Habit Builder・Atomic Habits AI sells 7 in-app purchases, starting at $1.99 per 7 days and Plainchecks sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Habit Builder・Atomic Habits AI ships an update every 2 weeks, Plainchecks every 2 months. The most recent releases landed on November 3, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Habit Builder・Atomic Habits AI | Plainchecks |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (19 ratings)](https://appshunter.io/ios/app/habit-builderatomic-habits-ai/id6443798772/reviews)** | — |
| Number of ratings | **19** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Freemium | — |
| Size | 50 MB | 2 MB |
| Requires iOS | **18.6** | 26.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Maryna Aliakseichyk](https://appshunter.io/developer/1489645070) | [SEIRAN SOFT LLC](https://appshunter.io/developer/1896113954) |

## What reviewers say

### Habit Builder・Atomic Habits AI

[App page](https://appshunter.io/ios/app/habit-builderatomic-habits-ai/id6443798772)

This application helps users build positive habits and break negative ones through a structured approach. It utilizes a 'habit loop' with cues, routines, and rewards to make behaviors automatic. Track progress, set reminders, and gain daily inspiration to achieve your goals.

**Highlights:** Habit loop for automatic behavior formation, Habit Wheel for visualizing weekly goals, Daily 'Wisdom of the Day' inspiration, Calendar tracking for consistent completion, Diary for progress reflection, Customizable mantras and reminders, 21-day and 28-day habit formation modes

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Habster Pro: Weekly | $1.99 | per 7 days |
| Habster Pro: Monthly | $7.99 | per month |
| Habit Builder Premium | $7.99 | per month |
| Habster Pro: Quarterly | $12.99 | per 3 months |
| Habster Pro: Yearly | $19.99 | per year |
| Habit Builder Premium | $19.99 | per year |
| Habtser: Lifetime | $19.99 | one-time |


### Plainchecks

[App page](https://appshunter.io/ios/app/plainchecks/id6770185776)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee | $0.99 | one-time |
| Lunch | $2.99 | one-time |
| Dinner | $9.99 | one-time |


## Frequently asked questions

### Is Habit Builder・Atomic Habits AI free?

Habit Builder・Atomic Habits AI is free to download, with in-app purchases available.

### Is Plainchecks free?

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

### Do Habit Builder・Atomic Habits AI or Plainchecks have ads?

Neither Habit Builder・Atomic Habits AI nor Plainchecks shows ads.

### Which is updated more often, Habit Builder・Atomic Habits AI or Plainchecks?

Habit Builder・Atomic Habits AI ships an update every 2 weeks, and Plainchecks every 2 months. Most recently, Habit Builder・Atomic Habits AI was updated on November 3, 2026 and Plainchecks on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*