DuckGPS vs Speedometer One
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DuckGPS
This navigation app features a customizable duck avatar that visually represents your speed with a spinning propeller. It offers 360° rotation and a night mode for comfortable viewing. Always prioritize safe driving and obey traffic laws.
- Customizable duck avatar
- Realistic propeller speed indicator
- 360° free rotation
- Dedicated Night Mode
- Continuous GPS usage for speed tracking
Read full descriptionHide full description
DuckGPS: The Fun GPS Speed App Choose from a variety of cute outfits for your duck! The decorative propeller spins realistically based on your current speed. Position your duck anywhere you like with 360° free rotation. A dedicated Night Mode protects your eyes during evening drives. 【Heads-up】 Ducky Speedometer continuously uses GPS location data to function, requiring location services to be enabled. This will use more battery power and can reduce battery life. Please always obey local traffic laws and prioritize safe driving. Do not interact with the app while operating a vehicle. Please note that GPS accuracy can vary due to the limitations of device hardware sensors.
Speedometer One
Read full descriptionHide full description
Speedometer One shows how fast you’re going in big, clear numbers on iPhone and Apple Watch. When GPS can’t give a reliable reading, it shows -- and tells you why, instead of a made-up 0 or an old speed. Features Big Numbers Your speed fills the middle of the screen, and the arc of the gauge fills as you go faster. Tap the number to switch between mph, km/h, and knots. The screen stays on while Speedometer One is open. Honest Readings Until there’s a reliable GPS fix, the speed shows -- with a status such as Locating… or Low GPS accuracy. If the signal is lost, for example in a tunnel, your last speed stays on screen, dimmed, with the time since the last fix, then clears. Apple Watch See your speed in big numbers on your wrist, and tap the screen to switch units. The Apple Watch app is included, with no purchase needed. Readable at Every Size The speed, labels, and buttons grow with your text size, up to the largest accessibility sizes. VoiceOver reads your speed in full and tells you when the GPS signal changes. Speedometer One Pro A one-time in-app purchase adds: • Map Background — A map sits behind your speed and turns with your direction of travel. The map is built into the app, so it works without a cellular or Wi-Fi connection. • Lock Screen and Dynamic Island — A Live Activity keeps your speed and max in view without opening the app. Turn on Start Automatically to start it when you leave the app while you’re moving. • Max Speed — Your top speed, from accurate GPS readings only, kept until you reset it. • Elevation — Your altitude below your speed, in feet or meters. • Heading — The direction you’re going, as an arrow and as a compass point with degrees. • Night Mode — The display turns red on black to protect your night vision, and the map and status bar are hidden. • Haptics — Feel a tap when you set a new max speed, and a tick when you change units. Privacy Speedometer One has no accounts, ads, or tracking. Your speed is worked out on your iPhone, and your location history isn’t saved. With the map on and an internet connection, Speedometer One asks Apple’s location services for the name of the nearest town or city to show on screen. Requirements: • Speedometer One Pro is a one-time purchase, with no subscription. The Apple Watch app doesn’t need Pro. • Dynamic Island is available on supported iPhone models. • Place names require an internet connection. The map shows where you are. It doesn’t give directions. Map data © OpenStreetMap contributors, Protomaps.
Screenshots
Verdict
The clearest difference is price: Speedometer One at Free against DuckGPS's $4.99. Speedometer One also leads on update cadence (every 2 weeks vs every 3 months). DuckGPS's advantage is in-app purchases (none vs 1). On ads, device support 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
Speedometer One is free to download; DuckGPS costs $4.99 up front. Speedometer One sells 1 one-off in-app purchase. DuckGPS asks for nothing beyond the download.
DuckGPS ships an update every 3 months, Speedometer One every 2 weeks. The most recent releases landed on November 13, 2026 and November 11, 2026 respectively.
| Parameter | DuckGPS | Speedometer One |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 4.8 (16 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 16 — better | — |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone | iPhone, Apple Watch — better |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 27 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | 欣明 封 | Sypnapse LLC |
In-app purchases
DuckGPS
No in-app purchases
Speedometer One
- Speedometer One Pro$2.99









