Defi Meter C vs GNSS Circuit Logger
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Defi Meter C
Connects to the Defi Smart Adapter W via Bluetooth to display vehicle data from ADVANCE Control Unit or OBD on your iOS device. View various sensor readings like speed, RPM, and temperature in analog or digital formats.
- Bluetooth connectivity
- Displays vehicle sensor data
- Analog and digital meter views
- Customizable meter styles
- Supports various sensor readings
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本アプリはDefi Smart Adapter WとBluetoothで接続して使用するアプリです。 Defi Smart Adapter WはADVANCE Control UnitやOBDと接続して使用する製品で、 ADVANCE Control Unitに取り込んでいる車両情報またはOBDの車両情報をBluetoothでiOS端末に送信するアダプターです。 Defi Webサイトに記載の注意点および使用方法を必ずお読みになってからダウンロードしてください。 必ずDefiにて動作確認が取れた携帯端末をご使用ください。 動作確認が取れている携帯端末につきましてはDefi Webサイトに記載しております。 Defi ADVANCEコントロールユニットまたはOBDに入力されているセンサーデータがメーターとして表示されます。 表示可能な機種は、車速、エンジン回転数、吸気圧、油圧、燃圧、油温、水温、排気温度、電圧、スロットル開度、吸気温度、ギアポジションです。 アナログメーター表示やデジタルメーター表示機種をタッチすると、切り替えできます。 本アプリはADVANCE CR/BFのデザインとマッチしたスタイルです。 アプリが正常に動作しない場合や、ご不明点等がありましたら、下記Defi Webサイトの問い合わせフォームよりご連絡ください。 http://www.nippon-seiki.co.jp/defi/support/inquiry/
GNSS Circuit Logger
This application functions as a lap timer for circuit driving, utilizing GNSS technology. It supports various BLE devices for data logging and offers CSV, NMEA, and GPX output formats for lap times.
- GNSS lap timer for circuit driving
- BLE device compatibility (LNS and QSTARZ protocols)
- CSV, NMEA, GPX lap time output
- Data logging for circuit racing
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It’s a lap timer app for circuit driving that uses GNSS. Compatible with BLE devices (GL-770) that support the LNS protocol and BLE devices (BL-1000GT, BL-818GT, BL-1000ST) that support the QSTARZ protocol. CSV NMEA GPX output function for lap time.
Screenshots
Verdict
The clearest difference is review sentiment: GNSS Circuit Logger at 78% against Defi Meter C's 20%. GNSS Circuit Logger also leads on update cadence (every 11 days vs every 5 weeks). Defi Meter C's advantage is ads (none vs shown) and monetization model (free vs ad-supported). 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.
Defi Meter C ships an update every 5 weeks, GNSS Circuit Logger every 11 days. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.
| Parameter | Defi Meter C | GNSS Circuit Logger |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (4 ratings) — better | — |
| Positive reviews | 20.0% of reviews | 77.8% of reviews — better |
| Number of ratings | 4 — better | — |
| Update frequency | Every 5 weeks | Every 11 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 10.3 |
| Further details — not scored | ||
| Size | 6 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Defi | Yuji Kanda |
Customer experience
Defi Meter C
GNSS Circuit Logger
In-app purchases
Defi Meter C
No in-app purchases
GNSS Circuit Logger
No in-app purchases
Questions
Is Defi Meter C free?
Is GNSS Circuit Logger free?
Do Defi Meter C or GNSS Circuit Logger have ads?
Which is updated more often, Defi Meter C or GNSS Circuit Logger?
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