# ARC vs Stack

The clearest difference is iOS requirement: Stack at 15.1 against ARC's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

ARC ships an update every 4 days, Stack every 6 days. The most recent releases landed on September 5, 2026 and June 12, 2026 respectively.

## The numbers

| Metric | ARC | Stack |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 6 days |
| Size | 60 MB | 62 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPod, Apple Watch** |
| Age rating | 12+ | 4+ |
| Developer | [Martin Condet](https://appshunter.io/developer/1696467493) | [Naveen Senapathi](https://appshunter.io/developer/1889130875) |

## What reviewers say

### ARC

[App page](https://appshunter.io/ios/app/arc-freedom-through-focus/id6757255635)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Patron | $9.99 | one-time |
| Commander | $29.99 | one-time |
| Conqueror | $99.99 | one-time |


### 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 |


## Frequently asked questions

### Is ARC free?

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

### Is Stack free?

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

### Do ARC or Stack have ads?

Neither ARC nor Stack shows ads.

### Which is updated more often, ARC or Stack?

ARC ships an update every 4 days, and Stack every 6 days. Most recently, ARC was updated on September 5, 2026 and Stack on June 12, 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.*