# Discipline App by reformer vs Stack

The clearest difference is in-app purchases: Discipline App by reformer at none against Stack's 3. Stack's advantage is update cadence (every 6 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Stack sells 3 in-app purchases, starting at $3.99 per month. Discipline App by reformer asks for nothing beyond the download.

Discipline App by reformer ships an update monthly, Stack every 6 days. The most recent releases landed on September 28, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Discipline App by reformer | Stack |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 6 days** |
| Size | 29 MB | 62 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Manan Pareek](https://appshunter.io/developer/1882215016) | [Naveen Senapathi](https://appshunter.io/developer/1889130875) |

## What reviewers say

### Discipline App by reformer

[App page](https://appshunter.io/ios/app/discipline-app-by-reformer/id6760017724)

**In-app purchases:** none


### 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 Discipline App by reformer free?

Discipline App by reformer is free to download, with no in-app purchases.

### Is Stack free?

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

### Do Discipline App by reformer or Stack have ads?

Neither Discipline App by reformer nor Stack shows ads.

### Which is updated more often, Discipline App by reformer or Stack?

Discipline App by reformer ships an update monthly, and Stack every 6 days. Most recently, Discipline App by reformer was updated on September 28, 2026 and Stack on October 13, 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.*