# FlowStack vs Caroline

The clearest difference is update cadence: FlowStack at every 5 days against Caroline's fortnightly. FlowStack also leads on ratings volume (8 vs 1). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. FlowStack sells 3 in-app purchases, starting at $4.99 per month and Caroline sells 2 in-app purchases, starting at $24.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.9 for FlowStack against 5.0 for Caroline. That said, the two scores are not equally well evidenced: FlowStack has 8 ratings behind it against 1, so its average is the more settled of the two.

FlowStack ships an update every 5 days, Caroline fortnightly. The most recent releases landed on October 10, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | FlowStack | Caroline |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (8 ratings)](https://appshunter.io/ios/app/flowstack-focus-and-routine/id6739469633/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/caroline-ai-to-do-list/id6759112586/reviews)** |
| Number of ratings | **8** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Fortnightly |
| Monetization | Freemium | Free with in-app purchases |
| Size | 115 MB | 58 MB |
| Requires iOS | 16.2 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Nero studios](https://appshunter.io/developer/1785499015) | [Caroline AI](https://appshunter.io/developer/1876936339) |

## What reviewers say

### 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 |


### Caroline

[App page](https://appshunter.io/ios/app/caroline-ai-to-do-list/id6759112586)

This AI assistant manages your calendar, handling scheduling, rescheduling, and conflicts through natural conversation. It syncs with Google Calendar to keep your week organized and prioritize your time effectively.

**Highlights:** AI-powered calendar management, Natural language scheduling, Google Calendar sync, Automatic conflict resolution, Time prioritization, Weekly organization

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Caroline Pro Monthly | $24.99 | per month |
| Caroline Pro Annual | $239.99 | per year |


## Frequently asked questions

### Is FlowStack free?

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

### Is Caroline free?

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

### Which has better reviews, FlowStack or Caroline?

Caroline is rated higher. FlowStack averages 4.9 out of 5 from 8 ratings, while Caroline averages 5.0 from 1 ratings.

### Do FlowStack or Caroline have ads?

Neither FlowStack nor Caroline shows ads.

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

FlowStack ships an update every 5 days, and Caroline fortnightly. Most recently, FlowStack was updated on October 10, 2026 and Caroline on October 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*