ARSA(アーサ) vs HEART KNIFE
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ARSA(アーサ)
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ARSA(アーサ)の公式アプリです。 【概要】 ■ アプリ上から24時間いつでも予約が可能 指名予約にも対応しているので担当スタッフのスケジュールを確認してからの予約が可能です。 ■ クーポン お得なクーポンが配信されます。ネット予約時にクーポン利用での予約も可能なので来店時もスムーズに施術頂けます。 ■ スタッフが施術したスタイルを掲載 前もって画像を確認しておけばスムーズなオーダーが可能です。 ■ マイページ機能 予約状況の確認やキャンセルがマイページ上から行えます。スタッフの登録が出来るので前もって担当者を登録しておけばマイページからスムーズな指名予約が可能です。
HEART KNIFE
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This is an application for playing messages of HEART KNIFE's kitchen knife. If you hold your smartphone's camera over the sound waveform engraved on the knife, you can play back the recorded sound. You can listen to messages from the sender with one smartphone at any time any where, so you can always feel close to your important one. You can also create an original kitchen knife with a message like the one you received, so easily send the joy you felt when you received a kitchen knife to the person who is important to you.
Screenshots
Verdict
The clearest difference is update cadence: HEART KNIFE at monthly against ARSA(アーサ)'s every 16 months. ARSA(アーサ)'s advantage is iOS requirement (8.0 vs 11.0). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ARSA(アーサ) ships an update every 16 months, HEART KNIFE monthly. Both last shipped on November 11, 2026.
| Parameter | ARSA(アーサ) | HEART KNIFE |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 16 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 8.0 — better | 11.0 |
| Further details — not scored | ||
| Size | 3 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | shingo kamei | STEELSTYLE K.K. |
In-app purchases
ARSA(アーサ)
No in-app purchases
HEART KNIFE
No in-app purchases








