CalcKit vs Achromator
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
CalcKit
Design and build your own custom calculators with personalized formulas and input labels. Organize them into groups for easy access. Ideal for students, scientists, and engineers needing more than standard calculator functions.
- Design calculators with custom formulas
- Up to seven user-defined variables
- Built-in trig and math functions
- Organize calculators into groups
- Unlimited personal calculator creation
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CalcKit lets you create your own personalized calculators. With CalcKit you can: - Design calculators using your own formulas and input labels - Enter formulas with up to seven user-defined variables - Make use of built-in trig and other math functions - Organize your calculators into convenient groups CalcKit has a simple, intuitive interface, and it comes with a set of example calculators to get you started. You can create an unlimited number of personal calculators. Each formula can be as simple or as complex as you need. CalcKit is ideal for students, scientists, engineers and others who do everyday calculations and need more than a limited set of canned formulas.
Achromator
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Ever wondered why everyone keeps going on about the beautiful colors of the sunset? Having trouble seeing if a tomato is ripe? What about bananas? Or maybe you just find the world to colorful and want to keep it a little more black-and-white for the day? Achromator translates all color from the phone video stream into unique animated textures. It encodes all hues and shades - without loss of information! It even keeps much of the structure found in color, like mixing, gradual blending and complementary hues. The pattern generator can be adjusted to your personal preference - pattern size, speed and selection of individual colors.
Screenshots
Verdict
The clearest difference is update cadence: Achromator at monthly against CalcKit's every 30 months. CalcKit's advantage is iOS requirement (15.6 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
CalcKit ships an update every 30 months, Achromator monthly. The most recent releases landed on June 11, 2026 and September 22, 2026 respectively.
| Parameter | CalcKit | Achromator |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 80.0% of reviews | β |
| Update frequency | Every 30 months | Monthly β better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | β |
| Devices | iPhone, iPod β better | iPhone |
| Requires iOS | 15.6 β better | 17.6 |
| Further details β not scored | ||
| Size | 0 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Akkyra Systems | HANS-JURGEN GRAF GROTE |
In-app purchases
CalcKit
No in-app purchases
Achromator
No in-app purchases









