Simple Calculator. + vs Zark Update
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Simple Calculator. +
This app offers a straightforward and dependable calculator for iPhone and iPad. It includes advanced features like tax calculation, cost/selling price/margin calculations, and memory operations. A free version is available to try before purchasing.
- 12-digit display
- Tax calculation
- Cost, selling price, and gross margin calculations
- Memory operations
- Grand total (GT)
- Percentage calculation
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Simple, reliable, and easy-to-use calculator app for iPhone/ iPad. If you would like to try out the calculator first, download the FREE version of the app from the developer profile. Calculator features:- * 12 digits * Tax calculation * Percentage (%) * Cost/ selling price/ gross margin calculations * Memory operations * Grand total (GT) * Square root * +/- (Sign change) * Arithmetic constant calculation * Digit grouping and decimal mark as per device locale
Zark Update
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This application goes with Zark NI and it helps service Shinkawa sensors and hubs.
Screenshots
Verdict
The clearest difference is price: Zark Update at Free against Simple Calculator. +'s $1.99. Zark Update also leads on iOS requirement (13.0 vs 15.6). On update cadence, ads, in-app purchases 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
Zark Update is free to download; Simple Calculator. + costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Simple Calculator. + ships an update every 3 months, Zark Update every 2 months. The most recent releases landed on September 23, 2026 and September 17, 2026 respectively.
| Parameter | Simple Calculator. + | Zark Update |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 4.7 (147 ratings) — better | — |
| Positive reviews | 72.7% of reviews | — |
| Number of ratings | 147 — better | — |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | tasser gyati | SEC of America Incorporated |
In-app purchases
Simple Calculator. +
No in-app purchases
Zark Update
No in-app purchases
Questions
Is Simple Calculator. + free?
Is Zark Update free?
Do Simple Calculator. + or Zark Update have ads?
Which is updated more often, Simple Calculator. + or Zark Update?
Other comparisons
