突然の死 vs UnitConverter byNSDev
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
突然の死
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「突然の死」として知られる吹き出しのAAを作成するためのユーティリティです。 【主な機能】 - 簡単なコピー＆ペースト - Twitterへ投稿（「設定」アプリでTwitterの設定をしている場合のみ） - その他、iOSがサポートしている様々なサービスへ投稿 - 画像として出力 - 余白などの設定 - 履歴の記録 … 他
UnitConverter byNSDev
This tool converts between 26 different types of units, displaying conversion rates and allowing you to specify decimal places. It supports a vast array of units across categories like length, mass, volume, and more.
- Converts 26 types of units
- Displays conversion rates
- Customizable decimal places
- Supports numerous units in various categories
- User-submitted unit requests
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Tool to convert each of 26 types of units. When you select a unit of value that you enter, you create a table to calculate all the other units. It also displays the conversion rate. You can also specify the number of decimal places. 23 units in Length 18 units in Area 31 units in Volume 15 units in Mass 5 units in Angle 4 units in Temperature 7 units in Time 3 units in Frequency 5 units in Force 17 units in Pressure 6 units in Energy 6 units in Power rate 13 units in Speed 14 units in Acceleration 2 units in Dynamic viscosity 4 units in Kinematic viscosity 3 units in Magnetic flux density 2 units in Magnetic flux 7 units in Luminance 4 units in Illuminance 3 units in Radiation - source activity 2 units in Radiation - absorbed dose 2 units in Radiation - equivalent dose 2 units in Radiation - exposure 7 units in Infomation 7 units in Resolution Because we want to support units around the world, We will wait for the name and unit conversion information. Please enter your review.
Screenshots
Verdict
The clearest difference is review sentiment: 突然の死 at 86% against UnitConverter byNSDev's 20%. 突然の死 also leads on iOS requirement (11.4 vs 15.6). 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 5 months. The most recent releases landed on October 6, 2026 and October 4, 2026 respectively.
| Parameter | 突然の死 | UnitConverter byNSDev |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 85.7% of reviews — better | 20.0% of reviews |
| Update frequency | Every 5 months | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 11.4 — better | 15.6 |
| Further details — not scored | ||
| Size | 4 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Tadahisa Motooka | NIHON SYSTEM DEVELOPER CORPORATION |
Customer experience
突然の死
UnitConverter byNSDev
In-app purchases
突然の死
No in-app purchases
UnitConverter byNSDev
No in-app purchases
Questions
Is 突然の死 free?
Is UnitConverter byNSDev free?
Do 突然の死 or UnitConverter byNSDev have ads?
Which is updated more often, 突然の死 or UnitConverter byNSDev?
Other comparisons
