Dev Calc Pro (Hex Dec Oct Bin) vs eco検定 | 2026年対策問題
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Dev Calc Pro (Hex Dec Oct Bin)
This app converts numbers between binary, octal, decimal, and hexadecimal bases on a single screen. It also displays color hex codes and RGB values. It is designed for developers and does not include scientific or unit conversion functions.
- Binary, octal, decimal, hexadecimal conversion
- Color hex code and RGB display
- Large 19-digit decimal display
- Conversion reset toggle
- No ads (Pro Version)
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The Calculator for Developer ※What is for Pro Version: No Ad & Full Screen Developer Calc includes the following features: ■ Binary, octal, decimal, and hexadecimal in one screen ■ Color Hex code, RGB in one screen ■ The maximum value : 0x0FFF FFFF FFFF FFFF ■ The minimum value : 0xF000 0000 0000 0000 ■ The large 19-digit display of decimal ■ Conversion reset ON/OFF The following features are not included: (Just For Simple) ■ Scientific: trigonometric, hyperbolic, and logarithmic functions ■ Conversion: length, area, volume, speed, weight, temperature; unit arithmetic
eco検定 | 2026年対策問題
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「eco検定（環境社会検定試験）、これ一つで」 eco検定（環境社会検定試験）の対策に必要な知識をオリジナル900問で学べる買い切り型の学習アプリです。 学ぶ人がつまずきやすい論点を分野別に整理。 問題を解くだけでなく、正解・不正解それぞれの理由を確認できるため、なんとなく覚えるのではなく、知識を理解しながら進められます。 収録内容： ・eco検定（環境社会検定試験）の最新オリジナル問題900問 ・本試験形式に合わせた出題方式 ・分野別学習 ・ランダム出題 ・間違えた問題の復習 ・お気に入り問題 ・選択肢ごとの詳しい解説 ・オフライン利用対応 ・広告なし、追加課金なし 本アプリは、eco検定（環境社会検定試験）の学習補助を目的とした非公式アプリです。
Screenshots
Verdict
The clearest difference is update cadence: eco検定 | 2026年対策問題 at fortnightly against Dev Calc Pro (Hex Dec Oct Bin)'s every 7 months. eco検定 | 2026年対策問題 also leads on price ($1.99 vs $2.99). Dev Calc Pro (Hex Dec Oct Bin)'s advantage is iOS requirement (8.0 vs 17.0). On ads, in-app purchases and device support 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
Dev Calc Pro (Hex Dec Oct Bin) costs $2.99 and eco検定 | 2026年対策問題 $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Dev Calc Pro (Hex Dec Oct Bin) ships an update every 7 months, eco検定 | 2026年対策問題 fortnightly. The most recent releases landed on September 19, 2026 and September 23, 2026 respectively.
| Parameter | Dev Calc Pro (Hex Dec Oct Bin) | eco検定 | 2026年対策問題 |
|---|---|---|
| Price | $2.99 | $1.99 — better |
| Rating | 3.5 (2 ratings) — better | — |
| Positive reviews | 42.9% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 7 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 8.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 6 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | QQ TSUBASA | Masaki Kobayashi |
In-app purchases
Dev Calc Pro (Hex Dec Oct Bin)
No in-app purchases
eco検定 | 2026年対策問題
No in-app purchases
Questions
Is Dev Calc Pro (Hex Dec Oct Bin) free?
Is eco検定 | 2026年対策問題 free?
Do Dev Calc Pro (Hex Dec Oct Bin) or eco検定 | 2026年対策問題 have ads?
Which is updated more often, Dev Calc Pro (Hex Dec Oct Bin) or eco検定 | 2026年対策問題?
Other comparisons
