# GOLDWELL EDUCATION PLUS vs Digital Stamp Decoder

The clearest difference is price: GOLDWELL EDUCATION PLUS at Free against Digital Stamp Decoder's $2.99. GOLDWELL EDUCATION PLUS also leads on update cadence (monthly vs every 5 months) and ratings volume (9 vs 2). Digital Stamp Decoder's advantage is rating (5.0 vs 3.7). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

GOLDWELL EDUCATION PLUS is free to download; Digital Stamp Decoder costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Digital Stamp Decoder holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 9 and 2 respectively.

GOLDWELL EDUCATION PLUS ships an update monthly, Digital Stamp Decoder every 5 months. The most recent releases landed on September 4, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | GOLDWELL EDUCATION PLUS | Digital Stamp Decoder |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | [3.7 (9 ratings)](https://appshunter.io/ios/app/goldwell-education-plus/id924005909/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/digital-stamp-decoder/id1671241165/reviews)** |
| Number of ratings | **9** | 2 |
| Positive reviews | 14.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 months |
| Monetization | **Free** | Paid |
| Size | 812 MB | 205 MB |
| Requires iOS | 16.6 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kao USA INC.](https://appshunter.io/developer/1211758404) | [Graphic Security Systems Corp.](https://appshunter.io/developer/1176688211) |

## What reviewers say

### GOLDWELL EDUCATION PLUS

[App page](https://appshunter.io/ios/app/goldwell-education-plus/id924005909)

This app provides hairdressers with tools and resources to enhance their skills. Explore product knowledge, select hair colors, mix custom shades virtually, and book expert-led seminars. Access Goldwell's extensive experience for inspiration and professional development.

**Highlights:** In-depth product knowledge, Hair color shade selector, Virtual color mixing tool, Product navigator for lighteners, Color recipe encyclopedia, Seminar booking

**Features:** Vision Pro support

**In-app purchases:** none


### Digital Stamp Decoder

[App page](https://appshunter.io/ios/app/digital-stamp-decoder/id1671241165)

Reveal hidden images on USPS postage stamps using advanced Scrambled Indicia® technology. Originally designed for anti-counterfeiting, this app offers stamp collectors a unique way to authenticate and appreciate their collection. Explore the innovative world of philately with this modern collector's tool.

**Highlights:** Reveal hidden stamp images, Utilizes Scrambled Indicia® technology, Authenticates USPS postage stamps, Aids stamp collectors and philatelists, Showcase stamp collection

**In-app purchases:** none


## Frequently asked questions

### Is GOLDWELL EDUCATION PLUS free?

GOLDWELL EDUCATION PLUS is free to download, with no in-app purchases.

### Is Digital Stamp Decoder free?

Digital Stamp Decoder costs $2.99, with no in-app purchases.

### Which has better reviews, GOLDWELL EDUCATION PLUS or Digital Stamp Decoder?

Digital Stamp Decoder is rated higher. GOLDWELL EDUCATION PLUS averages 3.7 out of 5 from 9 ratings, while Digital Stamp Decoder averages 5.0 from 2 ratings.

### Do GOLDWELL EDUCATION PLUS or Digital Stamp Decoder have ads?

Neither GOLDWELL EDUCATION PLUS nor Digital Stamp Decoder shows ads.

### Which is updated more often, GOLDWELL EDUCATION PLUS or Digital Stamp Decoder?

GOLDWELL EDUCATION PLUS ships an update monthly, and Digital Stamp Decoder every 5 months. Most recently, GOLDWELL EDUCATION PLUS was updated on September 4, 2026 and Digital Stamp Decoder on June 1, 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.*