Comparison

Adam's Calc vs Octuple Calc

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

Head to head

Adam's Calc

Help remember answers

Free

🔧 Utilities

★ 5.02 ratingsView app →

About

Adam's Calc

A utility calculator that adds memory functionality to standard calculations. Designed to make your device's calculator more helpful by remembering previous results.

Highlights

Memory function for calculations
Enhanced utility calculator
Intuitive design
Remembers previous results

Features

Read full description

Adam's Calc is a utility calculator designed by rdConcepts. This design is intended to help make the standard calculator more useful by building some "memory" into the device. Inspiration -> Donald Norman.

About

Octuple Calc

Features

Read full description

Display eight calculators and perform calculations with each one.

Screenshots

Adam's Calc4 screens

Octuple Calc1 screens

Verdict

The call

The clearest difference is in-app purchases: Octuple Calc at none against Adam's Calc's 1. Octuple Calc also leads on update cadence (every 2 weeks vs every 4 months). On price, ads, 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

Both are free to download. Adam's Calc sells 1 one-off in-app purchase. Octuple Calc asks for nothing beyond the download.

UpkeepUpdate frequency

Adam's Calc ships an update every 4 months, Octuple Calc every 2 weeks. The most recent releases landed on September 23, 2026 and September 28, 2026 respectively.

Scorecard2 real differences · 7 level

Adam's Calc versus Octuple Calc: the parameters behind the verdict, then further details
Parameter	Adam's Calc	Octuple Calc
Price	Free	Free
Rating	5.0 (2 ratings) — better	—
Number of ratings	2 — better	—
Update frequency	Every 4 months	Every 2 weeks — better
Ads	Yes	Yes
In-app purchases	Yes	No — better
Monetization	Free with in-app purchases	—
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	15.0 — better	15.8.3
Further details — not scored
Size	5 MB	36 MB
Age rating	4+	4+
Developer	RD Concepts	Hideaki Uchikoshi

In-app purchases

1 purchases

Adam's Calc

One-time1

Remove Advertising$2.99

None

Octuple Calc

No in-app purchases

Questions

Is Adam's Calc free?

Adam's Calc is free to download, with in-app purchases available.

Is Octuple Calc free?

Octuple Calc is free to download, with no in-app purchases.

Do Adam's Calc or Octuple Calc have ads?

Both Adam's Calc and Octuple Calc show ads.

Which is updated more often, Adam's Calc or Octuple Calc?

Adam's Calc ships an update every 4 months, and Octuple Calc every 2 weeks. Most recently, Adam's Calc was updated on September 23, 2026 and Octuple Calc on September 28, 2026.