QRコードメーカー vs UltraStop
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
QRコードメーカー
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■QRコードメーカー■ 好きな文章をQRコード化するアプリです。 QRコードは好きな色を指定することができます。 一度作成したQRコードは一覧で管理できます！ 手紙の代わりに友人へのメッセージで作成したQRコードを送りつけたり自己紹介文章を送りあったりして遊べます。
UltraStop
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A high-performance stopwatch app designed for tasks requiring ultra-precise time measurement. It measures time down to milliseconds and microseconds with exceptional accuracy, making it perfect for experiments, sports, programming tests, and more. With an intuitive interface, anyone can effortlessly record precise timings.
Screenshots
Verdict
The clearest difference is ads: UltraStop at none against QRコードメーカー's shown. QRコードメーカー's advantage is update cadence (every 2 months vs every 12 months) and iOS requirement (9.0 vs 15.0). On price, 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.
QRコードメーカー ships an update every 2 months, UltraStop every 12 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.
| Parameter | QRコードメーカー | UltraStop |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months — better | Every 12 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 56 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Yukiya Ueda | JUHWAN LEE |
In-app purchases
QRコードメーカー
No in-app purchases
UltraStop
No in-app purchases
