# FourStage vs FlowStack

The clearest difference is in-app purchases: FourStage at none against FlowStack's 3. FourStage also leads on iOS requirement (13.0 vs 16.2). FlowStack's advantage is update cadence (every 5 days vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. FlowStack sells 3 in-app purchases, starting at $4.99 per month. FourStage asks for nothing beyond the download.

FourStage ships an update every 4 months, FlowStack every 5 days. The most recent releases landed on October 5, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | FourStage | FlowStack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (8 ratings)](https://appshunter.io/ios/app/flowstack-focus-and-routine/id6739469633/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 days** |
| Monetization | — | Freemium |
| Size | 149 MB | 115 MB |
| Requires iOS | **13.0** | 16.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Vertical Axion, LLC](https://appshunter.io/developer/1697138155) | [Nero studios](https://appshunter.io/developer/1785499015) |

## What reviewers say

### FourStage

[App page](https://appshunter.io/ios/app/fourstage/id6451203518)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### FlowStack

[App page](https://appshunter.io/ios/app/flowstack-focus-and-routine/id6739469633)

This app helps you beat procrastination and sharpen focus with a simple timer and task manager. Organize your day into routines, stack tasks sequentially, and track your progress with built-in statistics. Ideal for individuals with ADHD, students, and professionals seeking enhanced productivity.

**Highlights:** Flexible task timer, Stack tasks sequentially, Build habits with daily routines, ADHD-friendly focus, Live Activities and Dynamic Island integration, Track daily & weekly stats, Unlimited tasks (free version)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium access monthly | $4.99 | per month |
| Premium access yearly | $22.99 | per year |
| Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is FourStage free?

FourStage is free to download, with no in-app purchases.

### Is FlowStack free?

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

### Do FourStage or FlowStack have ads?

Neither FourStage nor FlowStack shows ads.

### Which is updated more often, FourStage or FlowStack?

FourStage ships an update every 4 months, and FlowStack every 5 days. Most recently, FourStage was updated on October 5, 2026 and FlowStack on October 10, 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.*