LumiCalc vs Chain Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LumiCalc
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LumiCalc combines a calculator with your keyboard: bring it up in any app to calculate, convert units, and type—with themes and colors you choose. Look good, work well Preset themes (Caramel Dune, Aurora Night, Violet Night, and more)—switch in one tap Custom keycap colors and backlight, including mosaic-style gradients Adjustable keycap and highlight corners for your own style Calculate & convert Basic math: addition, subtraction, multiplication, division—free to use Scientific (SCI): trig, log, square root, and more—requires subscription after trial Unit conversion (UNIT): length, weight, temperature, area, and more—requires subscription after trial English and Chinese UI and unit labels supported Subscription 3-day free trial. During the trial you can use scientific and unit conversion; after the trial, SCI and UNIT require a subscription. Themes, custom colors, saving designs, and other premium features also require a subscription. Built for anyone who wants a keyboard that’s both useful and looks the way you like. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Chain Calculator
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[Key Features] - Edit & Auto-Update : Modify any past value and watch all connected results update in real-time. - Save History : Save your frequently used formulas to your favorites and reuse them whenever you need. - Dark Mode Support : Enjoy a sleek, eye-friendly dark mode that adapts to your system settings. - Ad-Free Experience : Enjoy a clean, distraction-free environment with absolutely no ads.
Screenshots
Verdict
The clearest difference is in-app purchases: Chain Calculator at none against LumiCalc's 1. On price, ads, device support and iOS requirement 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. LumiCalc sells 1 in-app purchase, starting at $2.99 per month. Chain Calculator asks for nothing beyond the download.
| Parameter | LumiCalc | Chain Calculator |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Monthly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 3 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | 阳 赵 | seongkuk park |
In-app purchases
LumiCalc
- Unlock Premium — Monthly3 Days trial$2.991 Month
Chain Calculator
No in-app purchases








