Compass Retro vs KuCalc3
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Compass Retro
Experience a photorealistic retro compass that transforms your device into an intuitive navigation tool. It offers a full-screen analog display with smooth needle alignment to true north. Choose between light and dark themes for a visually appealing experience.
- Full-screen photorealistic display
- Smooth true north alignment
- Intuitive analog instrument feel
- Light and dark theme support
- Purpose-built for reliable navigation
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A full-screen, photo-realistic retro compass fills your display, recreating the look and feel of a classic analog instrument. When you hold your device flat, the needle smoothly aligns to true north, turning your phone into a dedicated, intuitive navigation tool. The app supports both light and dark themes, each with its own carefully crafted photograph: in light mode, the compass rests in bright, daytime lighting; in dark mode, it's bathed in the warm glow of an evening sunset. This app is purpose-built for one thing only-being a beautiful, reliable compass-with no extra screens, menus, or distracting features.
KuCalc3
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KuCalc3は、計算履歴を端末内に自動保存し、結果をすぐ再利用できるiPhone/iPad向け電卓です。 主な機能 ・四則演算、パーセント計算 ・税率を設定できる+Tax / -Tax ・計算式と結果を自動保存する履歴 ・履歴をタップして結果を再利用 ・よく使う履歴の先頭移動、個別削除、全削除 ・計算結果や式を書き留められるメモパッド ・Black、White、i Color、Candy、Cat、Orangeの6テーマ ・Round、Floor、Ceilによる丸め ・PUSH / POPで使える一時値スタック ・iPhoneとiPadの縦向き・横向きに対応 ・iPadでは電卓と履歴を並べる2ペイン表示 アカウント登録やネットワーク接続なしで、日常の計算をすぐに始められます。 履歴、メモ、税率、テーマ設定は端末内に保存されます。計算内容を外部サーバーへ送信せず、広告や利用状況分析も使用しません。 毎日の買い物、割り勘、消費税の確認など、あとで見返したい計算にKuCalc3をご活用ください。
Screenshots
Verdict
The clearest difference is in-app purchases: KuCalc3 at none against Compass Retro's 1. KuCalc3 also leads on ads (none vs shown) and update cadence (daily vs every 8 days). On price, 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
Both are free to download. Compass Retro sells 1 one-off in-app purchase. KuCalc3 asks for nothing beyond the download.
Compass Retro ships an update every 8 days, KuCalc3 daily. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.
| Parameter | Compass Retro | KuCalc3 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 8 days | Daily — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 36 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | akira ohmachi | Mineaki Sakatoku |
In-app purchases
Compass Retro
- Remove Ads$1.99
KuCalc3
No in-app purchases









