OTenkeyCalc vs calone
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OTenkeyCalc
Read full descriptionHide full description
Numeric ten keypad calculator that also displays the current temperature and weather at your current location * Weather information source: Apple Weather Service https://developer.apple.com/weatherkit/data-source-attribution/ https://support.apple.com/ja-jp/105038
calone
Read full descriptionHide full description
シンプルで多機能な電卓アプリ。 一般的な計算から関数電卓、単位変換、通貨換算まで、20以上の機能をこれ1つで。 完全無料・広告なし。 快適な計算体験を、ずっと無料で。 【主な機能】 ・基本電卓 ・関数電卓（sin, cos, tan, log など） ・単位変換 ・通貨換算（リアルタイムレート） ・履歴機能 ・その他20以上の便利機能 【対応言語】 日本語・英語・中国語
Screenshots
Verdict
The clearest difference is ads: calone at none against OTenkeyCalc's shown. calone also leads on iOS requirement (13.0 vs 16.7.10). On price, update cadence, 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
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 weeks. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.
| Parameter | OTenkeyCalc | calone |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.7.10 | 13.0 — better |
| Further details — not scored | ||
| Size | 37 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Hideaki Uchikoshi | MAMORU TAKANAMI |
In-app purchases
OTenkeyCalc
No in-app purchases
calone
No in-app purchases
