# Arbitrium vs GRIT Habit

The clearest difference is update cadence: GRIT Habit at every 4 days against Arbitrium's every 28 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Arbitrium sells 1 one-off in-app purchase and GRIT Habit sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Arbitrium ships an update every 28 months, GRIT Habit every 4 days. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Arbitrium | GRIT Habit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (11 ratings)](https://appshunter.io/ios/app/arbitrium/id1369876075/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 48 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [The Lost Project](https://appshunter.io/developer/380868134) | [Caleb Orhomre](https://appshunter.io/developer/1825925334) |

## What reviewers say

### Arbitrium

[App page](https://appshunter.io/ios/app/arbitrium/id1369876075)

This app assists in making rational decisions by allowing you to define criteria and rate your options. It uses a weighted decision matrix to help you identify the best choice for various life scenarios.

**Highlights:** Define decision criteria, Rate available options, Weighted decision matrix, Identify best choice, Save and manage decisions

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Mode | $0.99 | one-time |


### GRIT Habit

[App page](https://appshunter.io/ios/app/grit-habit/id6748471606)

**Features:** Apple Wallet

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 30 Days | $9.99 | per month |
| 12 Months | $59.99 | per year |


## Frequently asked questions

### Is Arbitrium free?

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

### Is GRIT Habit free?

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

### Do Arbitrium or GRIT Habit have ads?

Neither Arbitrium nor GRIT Habit shows ads.

### Which is updated more often, Arbitrium or GRIT Habit?

Arbitrium ships an update every 28 months, and GRIT Habit every 4 days. Most recently, Arbitrium was updated on October 24, 2026 and GRIT Habit on October 9, 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.*