# Personal colorimeter vs ZeroPamine

The clearest difference is in-app purchases: Personal colorimeter at none against ZeroPamine's 2. Personal colorimeter also leads on ads (none vs shown) and iOS requirement (12.0 vs 16.2). ZeroPamine's advantage is update cadence (weekly vs every 2 weeks). On price and device support there is nothing between them.

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

Personal colorimeter ships an update every 2 weeks, ZeroPamine weekly. Both last shipped on October 25, 2026.

## The numbers

| Metric | Personal colorimeter | ZeroPamine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/zeropamine-focus-timer/id6756612361/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 40.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 42 MB | 95 MB |
| Requires iOS | **12.0** | 16.2 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Korea Fashion Shimri Research Institute Co., Ltd.](https://appshunter.io/developer/1793486557) | [Dong Seok Lee](https://appshunter.io/developer/1446240630) |

## What reviewers say

### Personal colorimeter

[App page](https://appshunter.io/ios/app/personal-colorimeter/id6741187236)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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, Vision Pro support

**In-app purchases (2)**

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


## Frequently asked questions

### Is Personal colorimeter free?

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

### Is ZeroPamine free?

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

### Do Personal colorimeter or ZeroPamine have ads?

ZeroPamine shows ads; Personal colorimeter does not.

### Which is updated more often, Personal colorimeter or ZeroPamine?

Personal colorimeter ships an update every 2 weeks, and ZeroPamine weekly. Most recently, Personal colorimeter was updated on October 25, 2026 and ZeroPamine on October 25, 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.*