Comparison

Unit Converter vs ざっくり換算

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

Head to head
About

Unit Converter

This app offers a wide range of unit conversions for various measurements, from temperature to length. It features a user-friendly interface, customizable themes, and smart features that remember your frequent conversions. It also links to external apps for specialized tasks.

Highlights
  • Broad conversion spectrum
  • Personalizable themes
  • User-friendly interface
  • Smart features for frequent conversions
  • Links to specialized external apps
Features
Read full description

Discover the ultimate convenience in unit conversion with Unit Converter, an app that's as adaptable as it is accurate. Designed for anyone who deals with diverse measurements, this app not only provides a wide array of conversion options but also links to external applications for specialized tasks. Features: - Broad Conversion Spectrum: From temperatures to lengths, and angles to velocities, convert between various units with confidence. Our app supports an extensive range of categories to cater to all your conversion needs. - Personalizable Themes: Enjoy a personalized experience with our selection of themes. Whether you're a fan of minimal light modes or prefer the sleekness of dark themes, our app is designed to suit your aesthetic. - User-Friendly Interface: With its intuitive design, our app makes navigation and conversion simple and efficient. Instantly find the category you need with our clear and identifiable icons. - Smart Features: Our app remembers your most-used conversions, streamlining your tasks and enhancing productivity. - Unit Converter is not just an app; it's a comprehensive tool that bridges the gap to specialized applications, ensuring you're equipped for every measuring task. It's ideal for academics, professionals, and everyday life. Download Unit Converter now for a smarter, more connected way to handle all your unit conversion needs! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

ざっくり換算

Features
Read full description

When calculating something on your smartphone, entering each number one by one can be quite a hassle. This app eliminates the need to enter numbers when you want to convert. It's useful when you want to quickly get a rough calculation result. "New Conversion Method Proposal Q&A" Q1: How is this different from using a calculator? A1: With a calculator, you press each number key one by one. You have to be careful not to press the wrong key... If you use "Rough Conversion," it's easy: just align the red indicator with the scale and the converted value will appear. Q2: When repeating similar conversions, it's a hassle to have to re-enter numbers multiple times... A2: With "Rough Conversion," you can just slide the indicator along the scale and "see consecutive conversion results immediately." Q3: But it can't do a variety of calculations, right? A3: It can't do a variety of calculations like a calculator. However, if you register the conversions you frequently use in advance, you can use the "Rough Conversion" function to create something like your own "personal slide rule." [Features] - Easily convert values ​​without having to enter them yourself; simply slide your finger across the red indicator on the panel. - Quickly see approximate calculations. - You can freely customize the units you want to convert in advance. - You can also switch the conversion range, allowing you to convert over a wide or narrow range. - You can also freely set the title of the app's conversion screen. - The values ​​and units you set in the settings screen will remain the same the next time you launch the app. * The default setting is "tsubo" ←→ "m2" when converting land area. This can be freely customized. * The first time you use the app, please press Reset on the "Settings" screen. - You can freely register and save the conversions you want. ・You can easily use the app by simply tapping the title you want to use from the list of registered conversions to switch between them. ・You can freely change or delete registered conversion data at any time. ・You can also save registered conversion data on iCloud, so you can carry over your conversion data if you change your device. ・The registered list of conversion values ​​comes with several conversion patterns pre-loaded as examples (such as length and area conversions). *Please feel free to change or delete them as you like. *Conversion example data is automatically installed when you download this app for the first time. *If you are already using the app, the registered conversion value list may not be displayed even after updating. If this happens, please delete the app from your device and then download it again.

Screenshots

Unit Converter4 screens
ざっくり換算1 screens

Verdict

The call

The clearest difference is in-app purchases: ざっくり換算 at none against Unit Converter's 2. ざっくり換算 also leads on update cadence (every 2 months vs every 13 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. Unit Converter sells 2 in-app purchases, starting at $4.99 per month. ざっくり換算 asks for nothing beyond the download.

UpkeepUpdate frequency

Unit Converter ships an update every 13 months, ざっくり換算 every 2 months. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 7 level
Unit Converter versus ざっくり換算: the parameters behind the verdict, then further details
ParameterUnit Converterざっくり換算
PriceFreeFree
Rating4.8 (13 ratings) — better—
Number of ratings13 — better—
Update frequencyEvery 13 monthsEvery 2 months — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad — betteriPhone
Requires iOS16.4 — better16.6
Further details — not scored
Size50 MB4 MB
Age rating4+4+
DeveloperxNeat.comMasayuki Sato

In-app purchases

2 purchases

Unit Converter

Subscriptions2
  • Unit Converter3 Days trial$4.991 Month
  • Unit Converter3 Days trial$39.991 Year
None

ざっくり換算

No in-app purchases

Questions

Is Unit Converter free?
Unit Converter is free to download, with in-app purchases available.
Is ざっくり換算 free?
ざっくり換算 is free to download, with no in-app purchases.
Do Unit Converter or ざっくり換算 have ads?
Both Unit Converter and ざっくり換算 show ads.
Which is updated more often, Unit Converter or ざっくり換算?
Unit Converter ships an update every 13 months, and ざっくり換算 every 2 months. Most recently, Unit Converter was updated on November 2, 2026 and ざっくり換算 on October 30, 2026.

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