DevInstant vs YooniKey
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DevInstant
This utility app helps designers and developers quickly find color themes, symbols, icons, and characters. It offers features like color picking from images, Unicode character lookup, and code generation for design elements. It also includes unit conversion and device information.
- Color theme finder
- Symbol and icon library
- Unicode character lookup
- Code generation
- Unit conversion
- Image filters
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Welcome to DEVInstant, it is an easy&quick tool for designers and developers, support quickly find color themes, symbols, icons, character, views&controls and others, to help you get the information about these items. Help you easy to find design inspiration, improve the efficiency of development and creation. - About Color: System colors of ios and osx, light or dark mode. Many color cards and gradient themes. HTML5 standard colors and Web safe colors. Find color with Color palette, Effect previews. Picker color from image. - About Symbol: ios and osx system symbols & images. Unicode symbol characters. Emoji symbols. SF Symbols. - About Character: Unicode Character Encyclopedia. HTML5 entity character table. System FontStyle viewing. - Code generation: Copy the value, name, code of the color, character or symbol to clipboard. - Quick Searching: Searching with keywords and values. - Views&Controls: Explore the appearance of various types of views and controls in iOS. - Image Filters: CoreImage's Image Filters browsing, viewing features. - Others: Apple devices information and resolution query. Unit conversion features, support length, area, volume, pressure, mass, energy..., 19 kinds. Accelerometer, magnetometer, gyroscope data display MD5, SHA, BASE64 encoder
YooniKey
Access and type a vast array of special characters not found on standard keyboards. This app and its integrated keyboard provide a searchable Unicode browser, allowing you to find, use, and explore code points and code blocks with ease. Create custom text styles and manage your favorite characters.
- Searchable Unicode browser
- Embedded keyboard for any app
- Code block and code point exploration
- Favorite and recently used characters
- Styled alphabet converter
- Long-press for character info and filtering
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Are you frequently wanting to type characters that aren't in standard keyboards? I know I was, and didn't want to pay extra just to get to the characters I needed. So I wrote YooniKey, a full Unicode® browser application and an embedded keyboard that can be used by any application. Both the app and the keyboard offer a searchable list of Unicode® code blocks and code points. Keyboard highlights: ⁍Quickly jump to any code block, sorted by name or natural position. ⁍When searching in the keyboard, a simple ASCII keyboard appears that allows you to type the limited characters allowed in code point names. ⁍See and type favorite and recently used code points. ⁍Long-press on a code point for more information about it. Releasing with your finger inside the info balloon will filter on the tapped code point's related code points. That makes for fast, simple exploration without having to visit the app! App highlights: ⁍Quickly jump to any code block, sorted by name or natural position. ⁍Customize the index shown on the right for even faster access to your favorite code blocks. ⁍Tap on a code point for more information about it, include its hex value, name, aliases, and related characters. ⁍Long-press a code point to add it to or remove it from favorites or to filter on its related code points. ⁍Long-press on a related character in the info area to look up that code point, include its hex value, name, and related characters. ⁍Tap code points to enter them into the edit field, then tap the Copy to Pasteboard button so your text can be pasted elsewhere. ⁍Styled alphabet converter makes it easy to create custom text in assorted typefaces found in the Mathematical Alphanumeric Symbols code block. Unicode and the Unicode Logo are registered trademarks of Unicode, Inc. in the United States and other countries.
Screenshots
Verdict
The clearest difference is rating: YooniKey at 4.8 against DevInstant's 4.0. YooniKey also leads on in-app purchases (none vs 2). DevInstant's advantage is update cadence (monthly vs every 9 months). On price, review sentiment, ratings volume and ads 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. DevInstant sells 2 in-app purchases, starting at $1.99 per year. YooniKey asks for nothing beyond the download.
YooniKey holds the better App Store score, 4.8 against 4.0. Both are backed by a comparable volume of ratings — 4 and 11 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
DevInstant ships an update monthly, YooniKey every 9 months. The most recent releases landed on July 17, 2026 and June 3, 2026 respectively.
| Parameter | DevInstant | YooniKey |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (4 ratings) | 4.8 (11 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 4 | 11 — better |
| Update frequency | Monthly — better | Every 9 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 24 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | 苏斌 牟 | Steve Mills |
Customer experience
DevInstant
YooniKey
In-app purchases
DevInstant
- Yearly Subscription$1.991 Year
- Official Version$5.99
YooniKey
No in-app purchases








