# pHyter vs ColorMetric

The clearest difference is in-app purchases: pHyter at none against ColorMetric's 1. pHyter also leads on iOS requirement (10.0 vs 17.0). ColorMetric's advantage is update cadence (weekly vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. ColorMetric sells 1 in-app purchase, starting at $9.99 per year. pHyter asks for nothing beyond the download.

pHyter ships an update every 5 months, ColorMetric weekly. The most recent releases landed on September 8, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | pHyter | ColorMetric |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/phyter/id1447278006/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Weekly** |
| Monetization | Free | — |
| Size | 38 MB | 6 MB |
| Requires iOS | **10.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [James Beck](https://appshunter.io/developer/1483869106) | [Lance Zukel](https://appshunter.io/developer/1874053672) |

## What reviewers say

### pHyter

[App page](https://appshunter.io/ios/app/phyter/id1447278006)

This utility app connects to a handheld pH instrument, allowing users to view and manage their readings. It facilitates data logging and analysis for various applications.

**Highlights:** Connects to pH instrument, View pH readings, Manage data logs, Data analysis tools, iOS compatible

**Features:** macOS Compatibility

**In-app purchases:** none


### ColorMetric

[App page](https://appshunter.io/ios/app/colormetric/id6758633408)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ColorMetric Annual Ad Free | $9.99 | per year |


## Frequently asked questions

### Is pHyter free?

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

### Is ColorMetric free?

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

### Do pHyter or ColorMetric have ads?

Neither pHyter nor ColorMetric shows ads.

### Which is updated more often, pHyter or ColorMetric?

pHyter ships an update every 5 months, and ColorMetric weekly. Most recently, pHyter was updated on September 8, 2026 and ColorMetric on September 9, 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.*