Comparison

Level One vs TRUE ECHO

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

Head to head

APG's TRUE ECHO

About

Level One

Read full description

80G 雷达物位计，液位计，蓝牙调试软件,雷达物位计，液位计，超声

About

TRUE ECHO

Features

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Easily setup your APG TRUE ECHO® Radar via Bluetooth for your level application. Connect to your radar level sensor to read measurements, change settings, and optimize the performance of your radar. For complete TRUE ECHO app instructions with setting descriptions and recommended uses, go to https://www.apgsensors.com/wp-content/uploads/2024/06/TRUE-ECHO-CR-L.pdf For help, contact our sales team at sales@apgsensors.com or call (888) 525-7300 or (435) 753-7300

Screenshots

Level One4 screens

TRUE ECHO4 screens

Verdict

The call

The clearest difference is update cadence: TRUE ECHO at every 2 months against Level One's every 5 months. TRUE ECHO also leads on iOS requirement (13.0 vs 15.6). 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

Level One ships an update every 5 months, TRUE ECHO every 2 months. The most recent releases landed on September 19, 2026 and September 17, 2026 respectively.

Scorecard2 real differences · 4 level

Level One versus TRUE ECHO: the parameters behind the verdict, then further details
Parameter	Level One	TRUE ECHO
Price	Free	Free
Update frequency	Every 5 months	Every 2 months — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPod	iPhone, iPod
Requires iOS	15.6	13.0 — better
Further details — not scored
Size	18 MB	29 MB
Age rating	4+	4+
Developer	Zhidu Zhou	Automation Products Group, Inc.

In-app purchases

None

Level One

No in-app purchases

None

TRUE ECHO

No in-app purchases

Questions

Is Level One free?

Level One is free to download, with no in-app purchases.

Is TRUE ECHO free?

TRUE ECHO is free to download, with no in-app purchases.

Do Level One or TRUE ECHO have ads?

Neither Level One nor TRUE ECHO shows ads.

Which is updated more often, Level One or TRUE ECHO?

Level One ships an update every 5 months, and TRUE ECHO every 2 months. Most recently, Level One was updated on September 19, 2026 and TRUE ECHO on September 17, 2026.