# Owl Decide vs Adam's Calc

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.

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

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.

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.

## The numbers

| Metric | Owl Decide | Adam's Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (9 ratings)](https://appshunter.io/ios/app/owl-decide/id1123860591/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/adams-calc/id1296681283/reviews)** |
| Number of ratings | **9** | 2 |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 14 months | **Every 4 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 20 MB | 5 MB |
| Requires iOS | **9.3** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Baydin Inc.](https://appshunter.io/developer/1121758661) | [RD Concepts](https://appshunter.io/developer/1293498470) |

## What reviewers say

### Owl Decide

[App page](https://appshunter.io/ios/app/owl-decide/id1123860591)

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:** Vision Pro support

**In-app purchases:** none


### Adam's Calc

[App page](https://appshunter.io/ios/app/adams-calc/id1296681283)

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:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Advertising | $2.99 | one-time |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*