Groundspeed vs LB Altimeters
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Groundspeed
This app provides an extra-large display for ground speed, ideal for extreme sports like parachuting and paragliding. It also functions as a versatile speedometer for activities such as skating, cycling, running, or in a car, with customizable units and display options.
- Extra-large display for ground speed
- Supports parachuting, paragliding, skating, cycling, running, and car use
- Switchable units: mph, knots, m/s, km/h
- Adjustable decimal places
- Tap controls for MIN/MAX reset and help
- Rotation lock feature
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Groundspeed is a speedometer with an extra big-sized display - designed for parachuting and paragliding. As the name of this app implies, the displayed value is the speed above ground, it's not the air speed. It's nice with other sports too: skating, cycling and running. Or it can be a cool speedometer in your car. The unique 16-segment-digits are the fundament of the extraordinary design. The App offers a variety of controls: - Tap MIN and MAX to reset these values. - Tap the unit to switch the units to mph, knots, m/s and km/h. - Swipe the big speed digits to the left to add one decimal place. - Swipe the big speed digits to the right to hide one decimal place. - Tap the title to show help. - Tap the arrows in the lower right to lock rotation (be sure to lock rotation before you put on your gloves). WARNING: skydiving and paragliding are high risk activities. It's more important to stay safe than to read your speed!
LB Altimeters
This app serves as a digital logbook for skydiving, allowing users to track jumps, gear maintenance, and certifications. It can import jump data from compatible devices via Bluetooth and offers cloud backup for all logged information.
- USPA approved digital logbook
- Import jumps via Bluetooth
- Gear maintenance tracking
- Cloud-based backup
- Device control for altimeters
- Customizable logbook types
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JumpTrack includes a comprehensive, USPA approved digital logbook, allowing you to track your skydives and your gear maintenance needs. You can enter your jumps manually or download jumps from your OPTIMA3, QUATTRO3, or PROTRACK3 via Bluetooth. Export your jump data for a printout of your jumps, including a copy of the digital signature. Device Accessibility • Easily set your climb to altitude, high speed, and low speed warnings from your phone • Turn your OPTIMA3, QUATTRO3, or PROTRACK3 off from your phone • Set the time manually or sync the time from your phone • Select between and feet and meters from JumpTrack • Adjust the volume and pitch Logbook • USPA Approved Logbook • Import jumps from your OPTIMA3, QUATTRO3, or PROTRACK3 via Bluetooth • Export your logbook via email • Default settings to quickly enter jumps, including location, aircraft, gear, jump type, etc. • Includes cloud based backup of your logbook and jump information • Track jumps on your container, main, reserve, and AAD • Receive notifications when your gear is due for maintenance, from line set changes to AAD and reserve maintenance • Create multiple logbooks to track different types of jumps; AFF, Tandem, Coach, Organizing, Hop and Pop, Events, Dropzone etc. • Track your ratings and membership information • Signature and license number fields allow all your jumps to be verified for license and rating applications • JumpTrack includes cloud based backup of your logbook and jump information
Screenshots
Verdict
The clearest difference is price: LB Altimeters at Free against Groundspeed's $0.99. LB Altimeters also leads on rating (3.7 vs 1.0) and update cadence (every 9 months vs every 57 months). Groundspeed's advantage is review sentiment (86% vs 50%). On ratings volume, 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
LB Altimeters is free to download; Groundspeed costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
LB Altimeters holds the better App Store score, 3.7 against 1.0. Both are backed by a comparable volume of ratings — 2 and 3 respectively. Written reviews complicate that: 86% of Groundspeed's written reviews are positive against 50% of LB Altimeters's, so the app with the better star average is not the one people write more warmly about.
Groundspeed ships an update every 57 months, LB Altimeters every 9 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.
| Parameter | Groundspeed | LB Altimeters |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 1.0 (2 ratings) | 3.7 (3 ratings) — better |
| Positive reviews | 85.7% of reviews — better | 50.0% of reviews |
| Number of ratings | 2 | 3 — better |
| Update frequency | Every 57 months | Every 9 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 1 MB | 83 MB |
| Age rating | 4+ | 17+ |
| Developer | Heinrich Schnermann | Larsen and Brusgaard |
Customer experience
Groundspeed
LB Altimeters
In-app purchases
Groundspeed
No in-app purchases
LB Altimeters
No in-app purchases
Questions
Is Groundspeed free?
Is LB Altimeters free?
Which has better reviews, Groundspeed or LB Altimeters?
Do Groundspeed or LB Altimeters have ads?
Which is updated more often, Groundspeed or LB Altimeters?
Other comparisons
