Summator vs Smart Instant Calculator
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
Read full descriptionHide full description
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.
Smart Instant Calculator
Read full descriptionHide full description
◇Why Smart Calculator?◇ ・Real-time results: No “=” required—answers appear as you type. ・Widget-first: Do the math right on the Home Screen, then hand off values to the app. ・Keep & Drop: Ditch confusing M+/M−. Save a value with Keep, remove it with Drop—simple and intuitive. ・Only the essentials: All the everyday functions you actually use. ・Designed for comfort: Clean UI and eye-friendly colors for long sessions. ・Completely free: Every feature, no paywall. ◇Recommended For◇ ・You want a clean, straightforward calculator ・The default calculator feels limited ・You prefer instant results and minimal taps ・Opening an app for every quick calc is a hassle
Screenshots
Verdict
The clearest difference is ads: Summator at none against Smart Instant Calculator's shown. Smart Instant Calculator's advantage is update cadence (every 2 months vs every 14 months). On price, in-app purchases, 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. Neither carries in-app purchases, so what you see is what you pay.
Summator ships an update every 14 months, Smart Instant Calculator every 2 months. The most recent releases landed on September 10, 2026 and September 19, 2026 respectively.
| Parameter | Summator | Smart Instant Calculator |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 83.3% of reviews | — |
| Update frequency | Every 14 months | Every 2 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.2 — better | 18.0 |
| Further details — not scored | ||
| Size | 1 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Dmitri Roudakov | Ichi Hosotsuji |
In-app purchases
Summator
No in-app purchases
Smart Instant Calculator
No in-app purchases
Questions
Is Summator free?
Is Smart Instant Calculator free?
Do Summator or Smart Instant Calculator have ads?
Which is updated more often, Summator or Smart Instant Calculator?
Other comparisons
