よろず換算アプリ 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.
よろず換算アプリ
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『よろず換算アプリ』は、温度、距離、長さ、速度、重さ、面積、広さなどの様々な単位の換算を行うアプリです。 ・温度換算アプリ 摂氏 ⇔ 華氏 の換算を行います。 ・距離換算アプリ① キロメートル(km)⇔ マイル(mile)の換算を行います。 ・距離換算アプリ② メートル(m)⇔ ヤード(yard)の換算を行います。 ・長さ換算アプリ① メートル(m)⇔ フィート(feet)の換算を行います。 ・長さ換算アプリ② センチメートル(cm)⇔ インチ(inch)の換算を行います。 ・速度換算アプリ キロメートル/時(km/h)⇔ マイル/時(mile/h)の換算を行います。 ・重さ換算アプリ① キログラム(kg)⇔ ポンド(lb)の換算をを行います。 ・重さ換算アプリ② グラム(g)⇔ オンス(oz)の換算をを行います。 ・面積換算アプリ① 平方メートル ⇔ 坪 の換算を行います。 ・面積換算アプリ② 平方メートル ⇔ 反 の換算を行います。 ・面積換算アプリ③ 平方メートル ⇔ 町 の換算を行います。 ・面積換算アプリ④ 坪 ⇔ 反 の換算を行います。 ・面積換算アプリ⑤ 坪 ⇔ 町 の換算を行います。 ・広さ換算アプリ① 平方メートル ⇔ 畳 の換算を行います。 ・広さ換算アプリ② 平方メートル ⇔ 江戸間(176cm × 88cm) の換算を行います。 ・広さ換算アプリ③ 平方メートル ⇔ 京間(191cm × 95.5cm) の換算を行います。 ・広さ換算アプリ④ 平方メートル ⇔ 安芸間(185cm × 92.5cm) の換算を行います。 ・広さ換算アプリ⑤ 平方メートル ⇔ 中京間(182cm × 91cm) の換算を行います。 ・広さ換算アプリ⑥ 平方メートル ⇔ 団地間(170cm × 85cm) の換算を行います。 ・馬力換算アプリ 馬力(PS)⇔ キロワット(kW) の換算を行います。 ・トルク換算アプリ トルク(kgf・m)⇔ (N・m) の換算を行います。
ざっくり換算
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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
Verdict
The clearest difference is iOS requirement: よろず換算アプリ at 11.0 against ざっくり換算's 16.6. On price, update cadence, ads and in-app purchases 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.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.
| Parameter | よろず換算アプリ | ざっくり換算 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months | Every 2 months |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 11.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 56 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Hirataka Saito | Masayuki Sato |
In-app purchases
よろず換算アプリ
No in-app purchases
ざっくり換算
No in-app purchases









