# 90 Day Challenge vs HabitStable

90 Day Challenge and HabitStable are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. 90 Day Challenge sells 5 in-app purchases, starting at $1.99 per month and HabitStable sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

90 Day Challenge ships an update monthly, HabitStable every 2 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 90 Day Challenge | HabitStable |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (16 ratings)](https://appshunter.io/ios/app/90-day-challenge-resettr/id6743643363/reviews)** | — |
| Number of ratings | **16** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 87 MB | 58 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [John Kevin Basco](https://appshunter.io/developer/1803746571) | [Gurkan Gul](https://appshunter.io/developer/1706151112) |

## What reviewers say

### 90 Day Challenge

[App page](https://appshunter.io/ios/app/90-day-challenge-resettr/id6743643363)

Build lasting habits with a personalized 90-day program tailored to your lifestyle and goals. This offline-first app offers custom tasks for sleep, water, exercise, and more, with progressive challenges and visual progress tracking.

**Highlights:** Personalized 90-day habit program, Customized daily tasks, Progressive difficulty, Offline functionality, Visual progress tracking, Focus on sleep, water, exercise, and screen time

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| monthly | $1.99 | per month |
| Yearly - Bonus | $4.49 | per year |
| Monthly Pro | $7.99 | per month |
| yearly | $14.99 | per year |
| Yearly Pro | $29.99 | per year |


### HabitStable

[App page](https://appshunter.io/ios/app/habitstable-habit-tracker/id6758837513)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HabitStable Pro - Monthly | $1.99 | per month |
| HabitStable Pro - Yearly | $7.99 | per year |


## Frequently asked questions

### Is 90 Day Challenge free?

90 Day Challenge is free to download, with in-app purchases available.

### Is HabitStable free?

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

### Do 90 Day Challenge or HabitStable have ads?

Neither 90 Day Challenge nor HabitStable shows ads.

### Which is updated more often, 90 Day Challenge or HabitStable?

90 Day Challenge ships an update monthly, and HabitStable every 2 weeks. Most recently, 90 Day Challenge was updated on October 30, 2026 and HabitStable on October 31, 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.*