Three (Rule of 3 Calculator) vs Sortify
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Three (Rule of 3 Calculator)
This utility app helps users perform quick calculations for everyday scenarios like fuel consumption, currency conversion, and grocery shopping. It features a simple interface with options for result display customization and supports dark/light modes.
- Rule of 3 calculations
- Currency conversion
- Measurement conversions
- Grocery shopping calculations
- Simple and modern interface
- Result display customization
- Dark/light mode support
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For example: If my car consumes an average 8.8 litres of gas per 100 kilometers, a 350 kilometer trip will consume 30.8 litres (and therefore $61.6 if gas price is $2/litre)... ...or a fast currency converter: if 1 Euro is about 1.09 US dollars, 33.9 EUR is 36,92 USD. Three can also be used for measurements, image sizes, grocery shopping and more. As simple and trivial it is, the rule is used daily in practical arithmetics. The application has a simple and modern interface to perform fast calculations and includes some basic options to facilitate the displaying results (thousands separator, decimal digits) including color customization in dark/light modes.
Sortify
Manage your inventory with ease using this mobile app. Create, add, remove, and log items and categories for household, office, business, or warehouse needs. Streamline your inventory tracking directly from your smartphone.
- Create inventory items
- Add and remove items
- Log items and categories
- Manage household inventory
- Track office and business inventory
- Support for warehouse inventory
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Do you have a problem with keeping, maintaining, or finding inventory items? Do you find it hard to add or remove items from your inventory daily? Sortify is a phone-based app that will help create, add, remove, and log items as well as categories from the simple household, small to medium size of the office, business, and warehouse with the click of your smartphone.
Screenshots
Verdict
The clearest difference is monetization model: Three (Rule of 3 Calculator) at free against Sortify's free with in-app purchases. Sortify's advantage is ratings volume (10 vs 2) and iOS requirement (10.0 vs 15.0). On price, rating, update cadence and ads 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.
On the App Store both sit at effectively the same score — 5.0 for Three (Rule of 3 Calculator) against 5.0 for Sortify. That said, the two scores are not equally well evidenced: Sortify has 10 ratings behind it against 2, so its average is the more settled of the two.
Three (Rule of 3 Calculator) ships an update every 3 months, Sortify every 2 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.
| Parameter | Three (Rule of 3 Calculator) | Sortify |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (10 ratings) |
| Positive reviews | — | 80.0% of reviews |
| Number of ratings | 2 | 10 — better |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Pericles Maravelakis | ORACLE MULTIMEDIA ENTERPRISES LLC |
Customer experience
Three (Rule of 3 Calculator)
Sortify
In-app purchases
Three (Rule of 3 Calculator)
No in-app purchases
Sortify
No in-app purchases
Questions
Is Three (Rule of 3 Calculator) free?
Is Sortify free?
Which has better reviews, Three (Rule of 3 Calculator) or Sortify?
Do Three (Rule of 3 Calculator) or Sortify have ads?
Which is updated more often, Three (Rule of 3 Calculator) or Sortify?
Other comparisons
