# Epson Spectrometer vs tay.jp

The clearest difference is update cadence: tay.jp at every 3 weeks against Epson Spectrometer's every 3 months. tay.jp also leads on device support (4 vs 2). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Epson Spectrometer ships an update every 3 months, tay.jp every 3 weeks. The most recent releases landed on October 14, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Epson Spectrometer | tay.jp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/epson-spectrometer/id1558626654/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 57 MB | 69 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Seiko Epson Corporation](https://appshunter.io/developer/326876195) | [OPEN ESTATE JAPAN K.K.](https://appshunter.io/developer/1828843623) |

## What reviewers say

### Epson Spectrometer

[App page](https://appshunter.io/ios/app/epson-spectrometer/id1558626654)

This utility app enables precise color measurement of indoor and outdoor materials using a compatible spectrophotometer. It allows users to manage, compare, and adjust colors, and even check printer color reproduction capabilities.

**Highlights:** Portable color measurement, Import measurement data via Bluetooth, Manage colors as reference colors, Compare colors to Color Collections, Check printer color reproduction, Adjust color measurements, Create custom Color Collections

**Features:** Vision Pro support

**In-app purchases:** none


### tay.jp

[App page](https://appshunter.io/ios/app/tayjp/id6749119590)

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

**In-app purchases:** none


## Frequently asked questions

### Is Epson Spectrometer free?

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

### Is tay.jp free?

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

### Do Epson Spectrometer or tay.jp have ads?

Neither Epson Spectrometer nor tay.jp shows ads.

### Which is updated more often, Epson Spectrometer or tay.jp?

Epson Spectrometer ships an update every 3 months, and tay.jp every 3 weeks. Most recently, Epson Spectrometer was updated on October 14, 2026 and tay.jp on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*