Unit Converter vs UnitStack
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Unit Converter
This app offers a straightforward and user-friendly interface for converting various units of measurement. It categorizes essential conversions for daily life, ventilation, science, and other common needs.
- Intuitive and simple UI
- Categorized unit sets
- Basic conversions (length, area, weight, volume, temperature)
- Ventilation conversions (velocity, volume flow, pressure)
- Science conversions (force, speed, power)
- Time conversions
Read full descriptionHide full description
There are a lot of unit conversion apps on the market. However, most are inconvenient and difficult to use because of poor and complicated UI. This app has intuitive and simple UI, that is designed for casual user like you. Trust me. :) I've sorted essential unit sets for your daily life into 4 categories. - Basic : length (distance), area, weight (mass), volume (capacity), temperature - Ventilation : velocity, volume flow, pressure - Science : force, speed, power - Other. : time
UnitStack
This utility app allows for simultaneous unit and currency conversions, saving your progress and custom units. Its minimalist design ensures a clear and efficient user experience for all your measurement needs.
- Stack multiple conversions
- Persistent values
- Custom units of measure
- Minimalist interface
- Custom color themes
- Currency conversion
Read full descriptionHide full description
UnitStack lets you stack multiple unit conversions at once—so you never have to switch units or reselect conversions again. Your conversions are always saved. Open the app and start typing. Add custom units too—like that old reliable sauce spoon. Built for speed and clarity • Stack multiple conversions at once • Persistent values — pick up where you left off • Minimal, distraction-free interface • Custom color themes, including your own • Support for custom units of measure Whether you’re comparing measurements, converting currencies, or working across systems, UnitStack keeps everything visible and friction-free. Currency exchange rates are provided by Frankfurter (ECB reference rates).
Screenshots
Verdict
The clearest difference is update cadence: UnitStack at every 2 days against Unit Converter's every 3 months. Unit Converter's advantage is iOS requirement (8.0 vs 18.6). On price, ads, in-app purchases and monetization model 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.
Unit Converter ships an update every 3 months, UnitStack every 2 days. The most recent releases landed on October 6, 2026 and October 4, 2026 respectively.
| Parameter | Unit Converter | UnitStack |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 8.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 10 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Nikhil Subash Chander Goel | Michael Yang |
Customer experience
Unit Converter
UnitStack
In-app purchases
Unit Converter
No in-app purchases
UnitStack
No in-app purchases
