Comparison

Simple Calculator Multi vs Retro Calc

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

Head to head
About

Simple Calculator Multi

Features
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This is a simple calculator that comes in handy when you want to do some quick calculations. It does not display ads and does not use unnecessary permissions. It supports multiple screens, so you can perform multiple calculations at the same time. You can change the look and feel with themes and customize it yourself. How to operate - Clear Button long press ... All clear - Backspace Button long press... Clear. - Screen long press - Copy or Paste - History long press... Copy or delete history. - Custom Theme long press... Delete or Rename.

About

Retro Calc

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A beautifully simple calculator with a nostalgic retro design. Featuring a classic seven-segment display and warm, vintage colors, Retro Calc makes everyday math feel pleasant and effortless. No clutter, no distractions — just the essentials, crafted with care. Highlights - Focused on the four basic operations (+ − × ÷) - A seven-segment display drawn like the real thing, with tapered, softly rounded strokes - Up to 12 digits, with comma grouping that keeps large numbers readable at a glance - Sculpted keys that feel good to press, with haptic feedback on every tap - Large, easy-to-read key labels - Safe error handling for division by zero and overflow - VoiceOver support Your privacy, respected - No internet connection, ever - No data collection of any kind - No ads - No account required Simple by design. A calculator you'll reach for every day.

Screenshots

Simple Calculator Multi4 screens
Retro Calc4 screens

Verdict

The call

The clearest difference is update cadence: Retro Calc at every 3 weeks against Simple Calculator Multi's every 13 months. Simple Calculator Multi's advantage is iOS requirement (15.1 vs 17.0). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Simple Calculator Multi ships an update every 13 months, Retro Calc every 3 weeks. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

Scorecard2 real differences · 4 level
Simple Calculator Multi versus Retro Calc: the parameters behind the verdict, then further details
ParameterSimple Calculator MultiRetro Calc
PriceFreeFree
Update frequencyEvery 13 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPod — betteriPhone
Requires iOS15.1 — better17.0
Further details — not scored
Size25 MB0 MB
Age rating4+4+
Developertadashi endoShuji Okuno

In-app purchases

None

Simple Calculator Multi

No in-app purchases

None

Retro Calc

No in-app purchases

Questions

Is Simple Calculator Multi free?
Simple Calculator Multi is free to download, with no in-app purchases.
Is Retro Calc free?
Retro Calc is free to download, with no in-app purchases.
Do Simple Calculator Multi or Retro Calc have ads?
Neither Simple Calculator Multi nor Retro Calc shows ads.
Which is updated more often, Simple Calculator Multi or Retro Calc?
Simple Calculator Multi ships an update every 13 months, and Retro Calc every 3 weeks. Most recently, Simple Calculator Multi was updated on October 25, 2026 and Retro Calc on October 28, 2026.

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