Colorwise vs Undertone
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Colorwise
This app allows you to sample colors from your camera or images. It converts sampled colors into various formats like RGB, HSB, and CMYK, and can assign names to colors using built-in libraries. You can also export and import color swatches in popular design formats.
- Sample colors from camera
- Sample colors from images
- Convert colors to RGB, HSB, CMYK, etc.
- Assign names to sampled colors
- Export swatches in ASE, ACO, CSV formats
- Import swatches from design software
- Color picker for swatch creation/modification
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Colorwise is an iOS color sampler. Colorwise can sample colors straight from the camera or from an image. The sampled color is displayed along with the color components converted into a variety of formats including RGB, HSB, CMYK, CMY, Lab, hLab and XYZ. Libraries of colors can also be used to assign colors appropriate names. Sampled colors are stored in a list of swatches that can be exported in a variety of formats including Adobe Swatch Exchange (ASE) format that can be used in popular design programs such as Adobe Photoshop, Adobe Color File (ACO) format as used by Adobe Photoshop, Adobe Color Book (ACB) format as used by Adobe Photoshop color libraries. Additional formats include a simple text format that can be edited from Colorwise and CSV (comma separated value) format which can be used in spreadsheet applications such as Numbers and Excel. An HTML page can be generated showing the colors and color values. Colorwise can also import ASE, ACO, ACB, Text and CSV files. This makes it possible to import colors from Photoshop and other graphic software. Color libraries can be exported to the iTunes documents folder emailed, sent in messages, uploaded to iCloud Drive, Google Drive, Dropbox, shared with AirDrop and sent to other apps. Use color libraries to match colors sampled by Colorwise. When a color is sampled, the closest color match in the library is used to provide the color with a name. Included are eight color libraries with over 4500 named colors. A color picker is provided similar to those in popular color programs to create color swatches or modify colors. To demonstrate the effect of color on the human eye two complimentary visual effects are included. Feature List: • Sample colors straight from camera • Use either camera, torch, HD or SD camera options (if available) • Sample colors from images • Convert color samples to RGB, HSB, CMYK, CMY, LAB, hLAB and XYZ • Display greyscale version of color • Display closest color match from selected matching libraries • Store colors as list of swatches • Export swatches as ASE, ACO, ACB, Text, HTML or CSV • Import swatches as ASE, ACO, ACB, Text or CSV • Share with Dropbox, Google Drive, iCloud Drive, other apps, Email, Messages, AirDrop, etc • Select from complimentary colors for a swatch, including triads, tetrads, monochromatic variations and analogous colors • Color picker to create swatches or modify colors • Complimentary color visual effect • Help file including color formulas used
Undertone
Analyze images like a painter by visualizing values, color temperatures, and composition. Understand the underlying structure and pigment colors of any reference photo or artwork. Save your analyses for future reference.
- Value study (grayscale tonal zones)
- Warm/cool temperature map
- Composition analysis (rule of thirds, golden ratio)
- Real pigment color palette
- Saturation visualization
- Contrast mapping
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See any image the way a painter does. Bring in a reference photo, a master painting or a screenshot. In seconds, Undertone shows what sits underneath it: the values, the warm and cool, the composition and the real pigment colors. The things a painter checks before the first brushstroke, made visible. All processing happens on your device. Your images never leave it. Value study. The image stripped to grayscale and divided into clear tonal zones. Two values give you a notan, three give you light, middle and dark. Value does more work than color: a painting with strong values and wrong colors still reads. This automates the painter's squint. Composition. The structure under the image, from the rule of thirds and the golden ratio to triangles, leading lines, symmetry and framing. Ten types, and Undertone only shows the ones the image actually follows, each with how closely it matches. Premium. Warm and cool. A temperature map over the image. Muddy shadows? Probably warm paint leaking into your cools. Golden hour? Warm light forces cool shadows by contrast. Toggle the map on, and what you couldn't diagnose becomes obvious. Palette with real pigment names. Dominant colors shown by actual weight, each matched to the closest real pigment. Yellow Ochre, not "Autumn Sunset Dream." Undertone names the closest harmony and plots the colors on a wheel so you see the geometry. Saturation. Vivid areas glow, muted areas recede. See whether the intensity sits where you want the eye to go. Contrast. Where the eye lands first. Rings mark the strongest areas. Premium. Made for painters and artists: studying a master painting, planning a piece from a reference photo, or finding out why the shadows went muddy. Photographers use it to understand why a light works so they can find it again. Every analysis is saved, and over time your history becomes your own color reference. Free: 20 analyses at a time with the Original, Temperature, Values and Saturation modes, plus the palette and harmony for every image. Premium: Composition (10 guide types), Contrast, tinted value bands, the 2-value notan and 2 to 9 tonal steps, unlimited history, higher-resolution export. One-time purchase. No subscription. Stop guessing. Start seeing.
Screenshots
Verdict
The clearest difference is review sentiment: Undertone at 100% against Colorwise's 33%. Undertone also leads on price (Free vs $3.99) and rating (5.0 vs 4.0). Colorwise's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 15.0). On ratings volume, ads and device support 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
Undertone is free to download; Colorwise costs $3.99 up front. Undertone sells 1 one-off in-app purchase. Colorwise asks for nothing beyond the download.
Undertone holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 33% of Colorwise's written reviews are positive against 100% of Undertone's.
Colorwise ships an update every 62 months, Undertone every 10 days. The most recent releases landed on November 1, 2026 and November 8, 2026 respectively.
| Parameter | Colorwise | Undertone |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 4.0 (2 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 33.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 62 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 12 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | Sunshine Valley Systems | Paintingstack Technologies SpA |
Customer experience
Colorwise
Undertone
In-app purchases
Colorwise
No in-app purchases
Undertone
- Lifetime Premium$12.99









