# Sartre vs Fluid Focus App

The clearest difference is in-app purchases: Sartre at none against Fluid Focus App's 2. Sartre also leads on iOS requirement (13.0 vs 17.0). Fluid Focus App's advantage is update cadence (every 10 days vs every 4 weeks). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Fluid Focus App sells 2 in-app purchases, starting at $5.99 per month. Sartre asks for nothing beyond the download.

Sartre ships an update every 4 weeks, Fluid Focus App every 10 days. The most recent releases landed on September 13, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Sartre | Fluid Focus App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (10 ratings)](https://appshunter.io/ios/app/fluid-focus-app/id6477136445/reviews)** |
| Number of ratings | — | **10** |
| Positive reviews | **100.0% of reviews** | 97.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 10 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 21 MB | 100 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Aliya Khan](https://appshunter.io/developer/1609220790) | [Fluid Focus Ltd](https://appshunter.io/developer/1728591405) |

## What reviewers say

### Sartre

[App page](https://appshunter.io/ios/app/sartre/id6446352868)

This app helps you manage daily tasks, assignments, and long-term projects to improve productivity and balance. It also includes features for relaxation, reflection, and habit building to support mental well-being.

**Highlights:** Daily task management with prioritized goals, Long-term project breakdown into achievable steps, Assignment tracking with due dates and categories, Daily reflection on happiness and productivity, Fun activities, quotes, and media recommendations, Habit building support

**Features:** macOS Compatibility

**In-app purchases:** none


### Fluid Focus App

[App page](https://appshunter.io/ios/app/fluid-focus-app/id6477136445)

This app helps you manage screen time and boost productivity by blocking distractions and rewarding healthy digital habits. It offers customizable focus sessions, guided meditations, and smart app blocking features to help you stay present and achieve your goals.

**Highlights:** Rewards for healthier screen time, Customizable focus and rest sessions, Guided meditation suite, Smart app blocking with schedules and time limits, Walk to Unlock feature, Progress tracking and analytics, Community support

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fluid Focus Pro | $5.99 | per month |
| Fluid Focus Pro | $59.99 | per year |

**What reviewers like**

- 👍 Great GUI. Easy to use
- 🚀 Helps with productivity and focus
- 💡 Charitable donation feature
- 🔑 Effective app blocking
- 🎨 Intuitive and user-friendly interface

**What reviewers complain about**

- 🐛 Timer issues when switching apps or locking screen
- 🔋 Battery drain when keeping app open

**Reported bugs**

- Coins not accruing properly
- Countdown timer canceling unexpectedly

**Requested features**

- Dark mode option
- More customization options for focus sessions


## Frequently asked questions

### Is Sartre free?

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

### Is Fluid Focus App free?

Fluid Focus App is free to download, with in-app purchases available.

### Do Sartre or Fluid Focus App have ads?

Neither Sartre nor Fluid Focus App shows ads.

### Which is updated more often, Sartre or Fluid Focus App?

Sartre ships an update every 4 weeks, and Fluid Focus App every 10 days. Most recently, Sartre was updated on September 13, 2026 and Fluid Focus App on September 28, 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.*