JAN Reader vs KeyLocK
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JAN Reader
This utility app scans JAN, EAN, and ITF14 barcodes, allowing you to copy the scanned numbers for use in other applications. It stores up to 999 scan histories with a line break separator and provides haptic feedback on detection for compatible iPhones.
- Scans JAN, EAN, and ITF14 barcodes
- Copy scanned numbers
- Up to 999 scan history
- Line break separator for history
- Haptic feedback on detection
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JAN Reader is an app that can scan JAN / EAN / ITF14 barcode. You can copy the scanned number and use it with other applications. You can keep up to 999 copy history. The format copied history is a line break separator. Feedback on Detect When barcode is detected, it notifies you by vibration (Haptic Feedback) of iPhone. (* 1) (* 1) It works only on iPhone 7 and later models.
KeyLocK
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こんな悩みありませんか？ 推し活費用や趣味〜の金額を管理しませんか？ 一人暮らし、同棲を始めて、支出を見える化しませんか？ 光熱費の節約したい方 前月と比較して使いすぎていないかチェックしよう！ 好きな背景にして楽しく記録しよう！ ■■■■ 機能 ■■■■ ・何月分の光熱費を支払ったのか管理できます！ ・自由に背景を設定できます！ ■■■■ 特徴 ■■■■ ・マイルールを設定して自分（ここ）だけのオリジナル記録を作れます！ ・前月や前年の金額と簡単に比較できます！ ・その他欄にオリジナルの項目を作成できます！ ・入力は簡単！ ・通知機能やグラフ機能はアップデートにより公開予定！
Screenshots
Verdict
The clearest difference is update cadence: KeyLocK at every 10 days against JAN Reader's every 68 months. JAN Reader's advantage is iOS requirement (13.6 vs 18.2). 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.
JAN Reader ships an update every 68 months, KeyLocK every 10 days. The most recent releases landed on September 28, 2026 and October 1, 2026 respectively.
| Parameter | JAN Reader | KeyLocK |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 66.7% of reviews | — |
| Update frequency | Every 68 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 13.6 — better | 18.2 |
| Further details — not scored | ||
| Size | 1 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Itoh Tomoaki | yuta kobayashi |
In-app purchases
JAN Reader
No in-app purchases
KeyLocK
No in-app purchases
