Comparison

TR4 Report vs ウォッチロガー

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

TR4 Report

For TR4A/TR4 PDF Report Output

About

TR4 Report

Features

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■ App Description “TR4 Report” is a user-friendly app compatible with T&D’s TR4A Series and TR4 Series data loggers for creating PDF reports of recorded data for specified periods. ■ Features - Simple operation to create, print, save or share a PDF report with a graph - Alert display on report based on the set upper/lower limits ■ Compatible Data Loggers - TR41A/42A/43A - TR41/42/45 - RT61/62/63

About

ウォッチロガー

Features

Read full description

温度・湿度・衝撃を測定する藤田電機製作所のデータロガー「WATCH LOGGER」用の標準(推奨) iOSアプリです。その場で測定開始設定や、測定記録データの閲覧・メール添付送信・FTPサーバへの転送・ファイル保存が行えます。本アプリで送信・転送または保存したLOGファイルは、Windows版アプリのStandard Editionで読み込みでき、測定データ収集の効率化が図れます。 ■製品に関するお問い合わせは以下までお願いいたします hpinfo01jp@f-log.jp

Screenshots

TR4 Report3 screens

ウォッチロガー4 screens

Verdict

The call

The clearest difference is update cadence: ウォッチロガー at every 2 months against TR4 Report's every 16 months. TR4 Report's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

TR4 Report ships an update every 16 months, ウォッチロガー every 2 months. The most recent releases landed on September 14, 2026 and September 18, 2026 respectively.

Scorecard2 real differences · 4 level

TR4 Report versus ウォッチロガー: the parameters behind the verdict, then further details
Parameter	TR4 Report	ウォッチロガー
Price	Free	Free
Update frequency	Every 16 months	Every 2 months — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod — better	iPhone
Requires iOS	15.0 — better	16.6
Further details — not scored
Size	117 MB	7 MB
Age rating	4+	4+
Developer	T&D Corporation	FUJITA ELECTRIC WORKS, LTD.

In-app purchases

None

TR4 Report

No in-app purchases

None

ウォッチロガー

No in-app purchases

Questions

Is TR4 Report free?

TR4 Report is free to download, with no in-app purchases.

Is ウォッチロガー free?

ウォッチロガー is free to download, with no in-app purchases.

Do TR4 Report or ウォッチロガー have ads?

Neither TR4 Report nor ウォッチロガー shows ads.

Which is updated more often, TR4 Report or ウォッチロガー?

TR4 Report ships an update every 16 months, and ウォッチロガー every 2 months. Most recently, TR4 Report was updated on September 14, 2026 and ウォッチロガー on September 18, 2026.