Comparison

Simple Calculator. + vs いわぽんReader

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

Simple Calculator. +

Business calculator. No Ads.

$1.99

🔧 Utilities

★ 4.7147 ratingsView app →

About

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.

Highlights

12-digit display
Tax calculation
Cost, selling price, and gross margin calculations
Memory operations
Grand total (GT)
Percentage calculation

Features

Read full description

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

About

いわぽんReader

Features

Read full description

■飛び出す映像　「いわぽんReader」は、「南極探見500日　岩手日報特別報道記録集」で楽しむことができるスマートフォン向けのアプリです。南極探見500日に掲載されているアイコンをアプリで読み取ると、さまざまな映像がスマートフォンからご覧いただけます。

Screenshots

Simple Calculator. +4 screens

いわぽんReader3 screens

Verdict

The call

The clearest difference is price: いわぽんReader at Free against Simple Calculator. +'s $1.99. いわぽんReader also leads on update cadence (every 2 months vs every 3 months). On ads, 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

CostPrice · In-app purchases · Ads · Monetization

いわぽんReader is free to download; Simple Calculator. + costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Simple Calculator. + ships an update every 3 months, いわぽんReader every 2 months. The most recent releases landed on November 2, 2026 and October 27, 2026 respectively.

Scorecard2 real differences · 8 level

Simple Calculator. + versus いわぽんReader: the parameters behind the verdict, then further details
Parameter	Simple Calculator. +	いわぽんReader
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	15.6
Further details — not scored
Size	1 MB	71 MB
Age rating	4+	12+
Developer	tasser gyati	岩手日報社

In-app purchases

None

Simple Calculator. +

No in-app purchases

None

いわぽんReader

No in-app purchases

Questions

Is Simple Calculator. + free?

Simple Calculator. + costs $1.99, with no in-app purchases.

Is いわぽんReader free?

いわぽんReader is free to download, with no in-app purchases.

Do Simple Calculator. + or いわぽんReader have ads?

Neither Simple Calculator. + nor いわぽんReader shows ads.

Which is updated more often, Simple Calculator. + or いわぽんReader?

Simple Calculator. + ships an update every 3 months, and いわぽんReader every 2 months. Most recently, Simple Calculator. + was updated on November 2, 2026 and いわぽんReader on October 27, 2026.