# ZeroPamine vs Stellar

The clearest difference is in-app purchases: Stellar at none against ZeroPamine's 2. Stellar also leads on ads (none vs shown). ZeroPamine's advantage is update cadence (weekly vs every 2 months) and iOS requirement (16.2 vs 18.0). On price and device support there is nothing between them.

Both are free to download. ZeroPamine sells 2 one-off in-app purchases. Stellar asks for nothing beyond the download.

ZeroPamine ships an update weekly, Stellar every 2 months. The most recent releases landed on October 17, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | ZeroPamine | Stellar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/zeropamine-focus-timer/id6756612361/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 95 MB | 7 MB |
| Requires iOS | **16.2** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dong Seok Lee](https://appshunter.io/developer/1446240630) | [Julian Khuy](https://appshunter.io/developer/1878590402) |

## What reviewers say

### ZeroPamine

[App page](https://appshunter.io/ios/app/zeropamine-focus-timer/id6756612361)

This app helps you stay focused using a Pomodoro timer with animated themes that evolve as you concentrate. It offers features for sorting focus time, saving routines, and tracking progress with detailed statistics. Start a dopamine detox and improve your productivity with this tool.

**Highlights:** Animated focus themes, Categorize focus time, Save routines and presets, Detailed statistics (daily, weekly, monthly, yearly), Lock screen timer, Cloud sync

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Campfire Theme - Cozy Fire | $1.99 | one-time |
| zeropamine pro | $9.99 | one-time |


### Stellar

[App page](https://appshunter.io/ios/app/stellar-study-timer/id6760194209)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ZeroPamine free?

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

### Is Stellar free?

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

### Do ZeroPamine or Stellar have ads?

ZeroPamine shows ads; Stellar does not.

### Which is updated more often, ZeroPamine or Stellar?

ZeroPamine ships an update weekly, and Stellar every 2 months. Most recently, ZeroPamine was updated on October 17, 2026 and Stellar on October 3, 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.*