# Circuit Colors vs FieldStack

The clearest difference is price: FieldStack at Free against Circuit Colors's $1.99. FieldStack also leads on update cadence (every 8 days vs every 9 months). Circuit Colors's advantage is chart position (#38 vs unranked) and device support (3 vs 1). On ads and in-app purchases there is nothing between them.

FieldStack is free to download; Circuit Colors costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Circuit Colors ships an update every 9 months, FieldStack every 8 days. The most recent releases landed on September 21, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Circuit Colors | FieldStack |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[3.7 (24 ratings)](https://appshunter.io/ios/app/circuit-colors/id412920859/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 58.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 8 days** |
| Monetization | Paid | — |
| Best chart rank | **#38** | — |
| Size | 2 MB | 10 MB |
| Requires iOS | **17.6** | 26.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Francisco Alcala](https://appshunter.io/developer/339407925) | [Dylan Russell](https://appshunter.io/developer/1869725372) |

## What reviewers say

### Circuit Colors

[App page](https://appshunter.io/ios/app/circuit-colors/id412920859)

**Currently charting:** #38 Top Paid · Productivity (US App Store)

Quickly determine the phase color for any circuit number across various international electrical systems. This app simplifies electrical work by eliminating the need for manual calculations or reference sheets.

**Highlights:** Determine phase color by circuit number, Supports US, Canada, EU, and UK systems, Add unlimited electrical panels, Configurable single or three-phase, Customizable phase color combinations, Multiple circuit numbering styles, Supports 4 to 1000 circuits

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### FieldStack

[App page](https://appshunter.io/ios/app/fieldstack/id6792173715)

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

**In-app purchases:** none


## Frequently asked questions

### Is Circuit Colors free?

Circuit Colors costs $1.99, with no in-app purchases.

### Is FieldStack free?

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

### Do Circuit Colors or FieldStack have ads?

Neither Circuit Colors nor FieldStack shows ads.

### Which is updated more often, Circuit Colors or FieldStack?

Circuit Colors ships an update every 9 months, and FieldStack every 8 days. Most recently, Circuit Colors was updated on September 21, 2026 and FieldStack on September 16, 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.*