JoyaTimer vs 開封証拠カメラ
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JoyaTimer
This app simulates the Japanese tradition of ringing a temple bell 108 times on New Year's Eve. It allows precise timing for each strike with sound and vibration, ensuring the final strike lands exactly at midnight. Features include customizable intervals, strike counts, and a special "Joya Mode" for automatic start time calculation.
- Customizable strike interval and count
- Joya Mode for automatic start time calculation
- Sound and vibration alerts
- Device stays awake while timer runs
- Compass for finding north
- Game Mode for timing challenges
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JoyaTimer is a specialized yet simple timer app inspired by a Japanese traditional New Year’s Eve event called “Joya no Kane”. At many Buddhist temples across Japan, priests strike the temple bell 108 times on New Year’s Eve. The final strike should sound exactly at 0:00 a.m. on January 1st. This app helps you ring the bell at precise timing with sound and vibration (iPhone only). I originally made this app for New Year’s Eve 2011 and actually used it. It was convenient, so I decided to publish it. Key Features • Set the interval (seconds) between strikes (default: 20 seconds) • Set the number of strikes (default: 108) • “Joya Mode” (default: ON) automatically calculates and displays when you should start the first strike so that the last strike finishes exactly at midnight • Sound alerts at the configured interval, plus vibration support (iPhone only) • If Joya Mode is OFF, you can pause the timer • While Joya Mode is ON, the Start button disappears after starting to prevent accidental taps • The device will not sleep while the timer is running (please watch your battery) • Compass: find north on the timer screen (supported devices only) Tip When you press Start, it counts as the first strike. If you plan to ring 108 times, setting the count to 109 and ignoring the first “strike” can make the operation easier. How-to Video https://youtu.be/CQwCRaXpC9I New Features from Ver. 7 • Start Now (Beta): quick-start support for late-evening use • Game Mode (Beta): timing challenge for accurate bell strikes • End-time setting: choose when the ringing should finish Improvements after Ver. 7 • (7.1) Improved judgement accuracy and score display • (7.1) Enhanced mic threshold tuning and effects • (7.2) Enhanced scoreboard and high-score effects • (7.3) Internal code optimization and maintainability improvements • (7.4) Added support for iPhone Duo. Notes / Important • Please make sure your iOS device clock is accurate • Airplane Mode is recommended (the app is configured not to run in the background) • Test and simulate the timer in advance • If pressing Start exactly at the first strike is difficult, set the count to 109 and begin from the second alert • “Time Correction” was added in Ver. 2.9 because it is hard to adjust iOS clocks at the second scale. If your device is 5 seconds ahead of actual time, set it to “-5”. Since Airplane Mode is recommended, network time sync (e.g., NTP) is not assumed; manual correction works best • If you find any bug, please contact the support page (Facebook page) Sound List (sound number mapping) Sound quality is not good yet; we plan to re-record in the future. 1. Electric sound 2. Big bell (Electric) 3. Big bell in Jyousenji temple (bad sound due to a crack) 4. Bell in Jyousenji (Large Kin) 5. Bell in Jyousenji (Medium Kin) 6. Sawari in Jyousenji
開封証拠カメラ
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フリマや通販の取引で、 「本当にこの状態で届いたのか?」 「発送時は問題なかったと証明できるか?」 と不安に思ったことはありませんか? 最近では、 届いた商品が「偽物だった」と言われたり、 正しく発送したはずなのに「違う商品が届いた」とされて返金を求められるなど、 購入者・出品者どちらの立場でもトラブルが増えています。 こうした状況では、 “記録があるかどうか”で結果が変わることもあります。 開封証拠カメラは、 もしもの時に備えて、取引の状態や手順をそのまま残しておける記録アプリです。 開封時の様子はもちろん、 発送前の商品状態や梱包の流れまで、 あとから確認できる形で記録できます。 ● こんな方におすすめ ・フリマアプリや通販を日常的に利用している方 ・発送前の状態をしっかり残しておきたい出品者 ・高額商品や限定品を扱う方 ・すり替えや返品トラブルに備えたい方 ・「言った・言わない」を避けたい方 ● 主な機能 ・商品名を入力してすぐ録画開始 ・録画中に静止画を追加保存 ・撮影日時、端末情報、任意の位置情報を記録 ・一覧から動画や静止画をすぐ見返せる ・証拠としてまとめて書き出し可能 ● 購入者側の使い方 1.商品名を入力して録画を開始 2.荷物の外装や封の状態を映す 3.開封の流れを止めずに撮影 4.気になる箇所は静止画でも保存 5.必要に応じて書き出し ● 出品者側の使い方 1.発送前の商品を準備 2.商品状態・付属品を記録 3.梱包の流れを動画で残す 4.封を閉じるまでの状態を記録 5.発送前の証拠として保存 ● こんな場面で役立ちます ・届いた箱に違和感があった ・注文内容と違う商品が届いた ・付属品が不足している ・すり替えや偽物を疑われた ・発送時点の状態を説明したい ・トラブル時に状況を整理したい ● 大切なお知らせ 本アプリは、取引時の状態や手順を記録・整理しやすくするためのツールです。 法的な証拠能力や各種サービスにおける判断結果を保証するものではありません。 ● 保存データについて 記録した動画、静止画、メタデータは主に端末内に保存されます。 広告表示には Google AdMob を利用しています。
Screenshots
Verdict
The clearest difference is in-app purchases: 開封証拠カメラ at none against JoyaTimer's 1. 開封証拠カメラ also leads on iOS requirement (13.0 vs 15.6). On price, ads 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. JoyaTimer sells 1 one-off in-app purchase. 開封証拠カメラ asks for nothing beyond the download.
| Parameter | JoyaTimer | 開封証拠カメラ |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (2 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 months | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 15 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | Daishin Ueyama | Haruki Takeshita |
In-app purchases
JoyaTimer
- Donate a cup of coffee.$0.99
開封証拠カメラ
No in-app purchases









