Summator vs LumiCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Summator
This utility app functions as a specialized calculator for tracking expenses. It allows users to add items and their values, storing both the running total and the individual entries. This makes it easier to manage costs and correct mistakes compared to a standard calculator.
- Itemized expense tracking
- Stores running total
- Remembers entered numbers
- Easy correction of entries
- Basic calculator function
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The program was conceived as a calculator for calculating the cost of the check. Put it in the cart the product and drive its value. The program remembers and outputs the result. Of course, you can count on a ordinary calculator. But, with the usual calculator, it is likely to make a mistake or lose the result in the middle of the list. The accumulator holds not only stores the sum, but the list of entered numbers. So to be mistaken difficult, and to correct easily. And the function of simple calculator is present.
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/
Screenshots
Verdict
The clearest difference is in-app purchases: Summator at none against LumiCalc's 1. LumiCalc's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.2). On price 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. LumiCalc sells 1 in-app purchase, starting at $2.99 per month. Summator asks for nothing beyond the download.
| Parameter | Summator | LumiCalc |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 83.3% of reviews | — |
| Update frequency | Every 14 months | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 17.2 | 13.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Dmitri Roudakov | 阳 赵 |
In-app purchases
Summator
No in-app purchases
LumiCalc
- Unlock Premium — Monthly3 Days trial$2.991 Month









