Comparison

Owl Decide vs Adam's Calc

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

Head to head
About

Owl Decide

This app helps users make decisions with various random selection tools. Features include yes/no answers, picking one option from a list with weighted choices, generating random numbers within a range, rolling multiple dice, and using a spinner to select from a circular list.

Highlights
  • Yes or No decision maker
  • Weighted choice picker
  • Random number generator
  • Multi-dice roller
  • Circular spinner tool
Features
Read full description

MAKING DECISIONS IS A HOOT WITH OWL DECIDE! Whether it’s picking a place for lunch, deciding who has to do a chore, or deciding which artisanal lettuce you want on your hipster sandwich, some decisions just aren’t easy. Owl Decide is here to help, featuring Moberto the Owl and his arsenal of features that help you and your friends choose between options in fair and fun ways: === Yes or No === Some answers are best left to fate. When you just need a yes or no answer, Owl Decide can give you guidance with its “Yes or No” feature. It’s like everyone’s favorite black-pool-ball-fortune-teller, but without the uncertainty. (You’ll never have to “ask again later”!) === Pick One === It can be hard to choose amongst multiple options. The “Pick One” feature lets you input all your options, and then have Moberto choose one at random. Favor one option slightly more than another? Not a problem. You can weight choices to your heart’s content before getting a decision. Perfect for picking an ice cream flavor. === Pick a Number === Whether you need a number between 1-10, or 6-135, Moberto’s got you covered. The “Pick a Number” feature allows you to quickly generate a random number between any interval. (And unlike the number of fingers behind your friend’s back, this number generator is guaranteed to be random!) === Dice === Dice have been used for thousands of years. But for just as long, people have forgotten them, accidentally eaten them, or had them roll under a couch. Owl Decide’s “Dice” feature lets you quickly and easily roll multiple (up to a dozen) dice at once on your iPhone or iPad. Never be without dice again! === Spinner === Around and around Moberto spins; where he lands, you’ll soon know. Owl Decide’s “Spinner” feature lets you quickly hone in on a random person or item in a circle. Moberto will slowly come to a stop, pointing toward one of the 22 points in a circle. (We do not condone the use of this feature for Spin the Bottle.)

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.

Screenshots

Owl Decide4 screens
Adam's Calc4 screens

Verdict

The call

The clearest difference is in-app purchases: Owl Decide at none against Adam's Calc's 1. Owl Decide also leads on ads (none vs shown) and ratings volume (9 vs 2). Adam's Calc's advantage is rating (5.0 vs 4.6) and update cadence (every 4 months vs every 14 months). On price 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. Adam's Calc sells 1 one-off in-app purchase. Owl Decide asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Adam's Calc holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 9 and 2 respectively.

UpkeepUpdate frequency

Owl Decide ships an update every 14 months, Adam's Calc every 4 months. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

Scorecard7 real differences · 3 level
Owl Decide versus Adam's Calc: the parameters behind the verdict, then further details
ParameterOwl DecideAdam's Calc
PriceFreeFree
Rating4.6 (9 ratings)5.0 (2 ratings) — better
Positive reviews83.3% of reviews—
Number of ratings9 — better2
Update frequencyEvery 14 monthsEvery 4 months — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.3 — better15.0
Further details — not scored
Size20 MB5 MB
Age rating4+4+
DeveloperBaydin Inc.RD Concepts

Customer experience

Owl Decide

All ratings9 ratings
Positive88.9%
Neutral0.0%
Negative11.1%
Written reviews6 reviews
Positive83.3%
Neutral0.0%
Negative16.7%

Adam's Calc

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Owl Decide

No in-app purchases

1 purchases

Adam's Calc

One-time1
  • Remove Advertising$2.99

Questions

Is Owl Decide free?
Owl Decide is free to download, with no in-app purchases.
Is Adam's Calc free?
Adam's Calc is free to download, with in-app purchases available.
Which has better reviews, Owl Decide or Adam's Calc?
Adam's Calc is rated higher. Owl Decide averages 4.6 out of 5 from 9 ratings, while Adam's Calc averages 5.0 from 2 ratings.
Do Owl Decide or Adam's Calc have ads?
Adam's Calc shows ads; Owl Decide does not.
Which is updated more often, Owl Decide or Adam's Calc?
Owl Decide ships an update every 14 months, and Adam's Calc every 4 months. Most recently, Owl Decide was updated on October 24, 2026 and Adam's Calc on October 9, 2026.

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