Defi Meter C vs GPS Lap Timer
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/
GPS Lap Timer
Accurately measure lap and sector times for race tracks using your iPhone's GPS. This app employs proprietary algorithms for precise timing without external receivers. It saves approximately 10,000 laps and supports numerous circuits worldwide.
- Accurate lap and sector timing
- Uses iPhone GPS
- Proprietary measurement algorithms
- Saves up to 10,000 laps
- Supports numerous global circuits
- Stand-by mode for pocket use
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• "GPS Lap Timer" is a lap timer app for racing circuits that utilizes the iPhone's GPS function. • Easily and accurately measure lap times and sector times using only your iPhone. No external GPS receiver is required. • The accuracy of a GPS lap timer is not determined solely by the GPS update frequency. This app achieves highly accurate lap time measurement through its unique measurement logic. • Approximately 10,000 measured lap times are saved and can be viewed and shared. • Enjoy a fulfilling racing life with this app! (How to use) Please see "https://gpslaptimer.blogspot.com/2026/08/gps-lap-timer-free-ios-app.html”. You can also access it from “Settings” → “User Guide” in the app. (Measurable circuits) Planned to be added. Please let us know if you have any requests. Please also report any bugs or issues. (Australia) Sydney Motorsport Park (Brabham, Gardner GP, Druitt North) Sydney Motorsport Park Amaroo South (Canada) Calabogie Motorsports Park CTMP Driver Development Track CTMP Grand Prix Track CTMP Karting Track (CCW) CTMP Karting Track (CW) Toronto Motorsports Park (CCW) Toronto Motorsports Park (CW) (France) Circuit Paul Ricard (Gernany) Nürburgring Nordschleife Nürburgring Nordschleife (BTG) (Japan) Please see “https://gpslaptimer.blogspot.com/2026/08/list-of-japanese-circuits.html”. (Malaysia) Sepang International Circuit (Taiwan) Lihpao G2 Circuit (Thailand) Chang International Circuit (United Kingdom) Oulton Park Circuit Silverstone International Circuit Silverstone Grand Prix Circuit Silverstone Stowe Circuit Silverstone National Circuit Donington Park Circuit Brands Hatch GP Circuit Brands Hatch Indy Circuit (United States) Blackhawk Farms Raceway BRP Kart CCW1 BRP Kart CW1 BRP Race CCW1 BRP Race CW1 BRP Race CCW2 BRP Race CW2 BRP The Circuit CCW (Buttonwillow Raceway Park) BRP The Circuit CW (Buttonwillow Raceway Park) Laguna Seca Road America Sebring Raceway GP Road Course Sonoma Raceway Summit Point Motorsports Park (Main) Summit Point (Jefferson Circuit CCW) Summit Point (Shenandoah Circuit CCW) VIR Grand∙Full Course VIR North Course VIR South Course VIR Patriot Course Waterford Hills Road Racing The developer assumes no responsibility for any accident, violation, loss or claims by third parties which may arise from the use of this app. Terms of Use: This application is provided under the Apple Standard End User License Agreement (EULA). https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is review sentiment: GPS Lap Timer at 62% against Defi Meter C's 20%. GPS Lap Timer also leads on update cadence (every 6 days vs every 5 weeks). Defi Meter C's advantage is in-app purchases (none vs 3) and ads (none vs shown). On price 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. GPS Lap Timer sells 3 in-app purchases, starting at $3.99 per 3 months. Defi Meter C asks for nothing beyond the download.
Defi Meter C ships an update every 5 weeks, GPS Lap Timer every 6 days. The most recent releases landed on October 8, 2026 and October 16, 2026 respectively.
| Parameter | Defi Meter C | GPS Lap Timer |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (4 ratings) — better | — |
| Positive reviews | 20.0% of reviews | 61.9% of reviews — better |
| Number of ratings | 4 — better | — |
| Update frequency | Every 5 weeks | Every 6 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 6 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Defi | Takao Ichimura |
Customer experience
Defi Meter C
GPS Lap Timer
In-app purchases
Defi Meter C
No in-app purchases
GPS Lap Timer
- Unlimited Measurements$3.993 Months
- Unlimited Measurements$5.991 Year
- Unlimited measurements$9.99
Questions
Is Defi Meter C free?
Is GPS Lap Timer free?
Do Defi Meter C or GPS Lap Timer have ads?
Which is updated more often, Defi Meter C or GPS Lap Timer?
Other comparisons
