Simple Calculator. vs 昭和レトロ電卓
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Simple Calculator.
A straightforward calculator designed for speed and accuracy, mimicking classic pocket calculators. It offers real-world logic, business-focused calculations like cost, sell, and margin, and a clean interface for effortless use.
- Real-world logic, no forced order of operations
- Running total display
- Cost, sell, margin calculations
- Add/subtract percentages in one step
- Clean, intuitive interface with large buttons
- Minimal, non-intrusive ads
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This is the calculator that gets it right—built for professionals, retailers, and anyone who needs fast, accurate math without the complexity. • Work smarter with real-world logic No forced order of operations—just like a classic pocket calculator with a running total. • Perfect for business use Easily handle cost, sell, and margin calculations. Add or subtract percentages in one step. • Clean, intuitive interface Large, labeled buttons and a crisp display make every calculation effortless. • Reliable and distraction-free Minimal ads, never intrusive—so you can stay focused, even in front of clients. Inspired by the Casio calculators you know and trust—modernized for your iPhone/ iPad. Download now and make everyday math faster, clearer, and smarter.
昭和レトロ電卓
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昭和家電のような「蛍光表示管（VFD）」風の光り方と、カチカチ音で“触って気持ちいい”電卓です。 【主な機能】 四則演算・小数・％・符号反転 紙テープ履歴（端末内のみ保存） クリック音／ボタン振動のON/OFF ※広告（AdMob）を表示します。データは原則端末内で完結します。
Screenshots
Verdict
The clearest difference is ads: 昭和レトロ電卓 at none against Simple Calculator.'s shown. On price, update cadence, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Simple Calculator. ships an update every 3 months, 昭和レトロ電卓 every 5 months. The most recent releases landed on October 18, 2026 and October 3, 2026 respectively.
| Parameter | Simple Calculator. | 昭和レトロ電卓 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (1.6K ratings) — better | — |
| Positive reviews | 65.1% of reviews | — |
| Number of ratings | 1.6K — better | — |
| Update frequency | Every 3 months — better | Every 5 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 5 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | tasser gyati | Masaki Takahashi |
Bugs and requests
Simple Calculator.
Reported bugs
2 issues- Incorrect calculation results in some cases
- Ads appearing during critical usage scenarios
Requested features
3 requests- Add a dedicated 'C' clear button
- Provide more customization options for key layout
- Implement a history/memory function
昭和レトロ電卓
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Simple Calculator.
No in-app purchases
昭和レトロ電卓
No in-app purchases
Questions
Is Simple Calculator. free?
Is 昭和レトロ電卓 free?
Do Simple Calculator. or 昭和レトロ電卓 have ads?
Which is updated more often, Simple Calculator. or 昭和レトロ電卓?
Other comparisons
