ColorContrastChecker vs Token Validator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ColorContrastChecker
This utility app calculates the contrast ratio between two colors in real-time. Adjust RGB components using sliders to meet accessibility standards.
- Real-time contrast ratio calculation
- Adjustable RGB component sliders
- WCAG 2.0 compliance testing
- Instant visual feedback
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ColorContrastChecker is an application that test has been proposed in the Web Content Accessibility Guidelines (WCAG) 2.0, the color of the contrast ratio achieved standards . The contrast ratio is calculated in real-time two of the color by manipulating the slider of each RGB component , and displays .
Token Validator
Verify the RFID tag embedded in game equipment tokens using your phone's NFC reader. This utility requires internet access to confirm the accuracy of the information within the tag.
- Verify RFID tags
- Utilizes NFC reader
- Requires internet for validation
- Supports True Dungeon Tokens
- iPhone and iPod compatible
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This utility will allow users to verify the RFID tag embedded in their game equipment tokens. The first instance of this style of token is the Charm of Avarice. This app does require internet to validate the accuracy of the information contained in the RFID tag, and does require access to the NFC reader contained in the user phone. NOTE: This app will only install and function on iPhones equipped with an NFC reader.
Screenshots
Verdict
The clearest difference is rating: Token Validator at 5.0 against ColorContrastChecker's 1.0. ColorContrastChecker's advantage is update cadence (daily vs every 9 months) and iOS requirement (8.0 vs 13.0). On price, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Token Validator holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
ColorContrastChecker ships an update daily, Token Validator every 9 months. The most recent releases landed on October 3, 2026 and October 9, 2026 respectively.
| Parameter | ColorContrastChecker | Token Validator |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) | 5.0 (2 ratings) — better |
| Number of ratings | 1 | 2 — better |
| Update frequency | Daily — better | Every 9 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 8.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 13 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Yukio YOKOTA | Charles Jennings |
Customer experience
ColorContrastChecker
Token Validator
In-app purchases
ColorContrastChecker
No in-app purchases
Token Validator
No in-app purchases
Questions
Is ColorContrastChecker free?
Is Token Validator free?
Which has better reviews, ColorContrastChecker or Token Validator?
Do ColorContrastChecker or Token Validator have ads?
Which is updated more often, ColorContrastChecker or Token Validator?
Other comparisons
