Comparison

Thermo Log vs TR4 Report

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

Head to head

For TR4A/TR4 PDF Report Output

Free

💼 Business

No ratingsView app →

About

Thermo Log

Features

Read full description

●専用アプリThermo Logで温度/湿度データロガーの温度/湿度の記録間隔などの設定ができます。 ●温度/湿度データのダウンロードができます。 ●データロガーで記録を続けながらスマートフォンなどの端末へデータを送信ができます。 ●アプリのレポート機能でCSVファイルやPDFファイルを作成、保存することができます。 ●スマートフォンなどに保存した温度や湿度データはメール機能などでパソコンへ転送することができます。 ●外部温度センサープローブを使うことで（AD-5327TT）離れた場所や物の内部温度記録ができます。 ●1台のスマートフォンで通信範囲内の複数台のデータロガーと接続できます。 ●データロガーの機器IDを設定可能、複数台使用しても識別ができます。 ●記録開始時間の遅延機能（遅延スタート機能）の設定ができます。 ●4種類の停止モードの設定ができます。　①メモリー満杯または記録停止操作。　②メモリー満杯または設定した記録停止時分。　③記録停止するまでループ。　④設定して記録停止時分までループ。

About

TR4 Report

Features

Read full description

■ 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

Screenshots

Thermo Log4 screens

TR4 Report3 screens

Verdict

The call

The clearest difference is update cadence: Thermo Log at every 5 months against TR4 Report's every 16 months. Thermo Log also leads on iOS requirement (11.0 vs 15.0). 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

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

Thermo Log ships an update every 5 months, TR4 Report every 16 months. The most recent releases landed on September 10, 2026 and September 14, 2026 respectively.

Scorecard2 real differences · 4 level

Thermo Log versus TR4 Report: the parameters behind the verdict, then further details
Parameter	Thermo Log	TR4 Report
Price	Free	Free
Update frequency	Every 5 months — better	Every 16 months
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPod	iPhone, iPad, iPod — better
Requires iOS	11.0 — better	15.0
Further details — not scored
Size	10 MB	117 MB
Age rating	4+	4+
Developer	A&D Company, Limited	T&D Corporation

In-app purchases

None

Thermo Log

No in-app purchases

None

TR4 Report

No in-app purchases

Questions

Is Thermo Log free?

Thermo Log is free to download, with no in-app purchases.

Is TR4 Report free?

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

Do Thermo Log or TR4 Report have ads?

Neither Thermo Log nor TR4 Report shows ads.

Which is updated more often, Thermo Log or TR4 Report?

Thermo Log ships an update every 5 months, and TR4 Report every 16 months. Most recently, Thermo Log was updated on September 10, 2026 and TR4 Report on September 14, 2026.