Start Line App vs RPLab
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Start Line App
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A simple app for the start of a race/training session. Really easy to use: - Set up the start intervals in settings - Press start First count down will be synchronized with the real time (on the minute).
RPLab
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RPLab is a precision race pace and split calculator built for paddlers and rowing athletes. Designed for kayak, canoe, dragon boat, SUP, and rowing, RPLab helps you turn boat speed into clear, actionable performance data. Whether you're preparing for sprint racing, interval training, or competition, RPLab delivers accurate pace calculations instantly. KEY FEATURES Speed Converter Convert boat speed (km/h) into exact race pace. Target Pace Converter Calculate the required speed to hit your target pace. Split Calculator Generate detailed split times for race execution and training. Supports 50m, 100m, 250m, and fully custom distances. BUILT FOR PERFORMANCE Developed from real-world coaching and elite racing experience, RPLab is designed for athletes who need precise and reliable data. SIMPLE. FAST. RELIABLE. • Works fully offline • No accounts required • No tracking or data collection Developed by Gergely Gyertyános World Champion & High Performance Coach
Screenshots
Verdict
The clearest difference is price: Start Line App at Free against RPLab's $4.99. Start Line App also leads on device support (3 vs 1). RPLab's advantage is update cadence (every 2 months vs every 27 months). On ads, in-app purchases 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
Start Line App is free to download; RPLab costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Start Line App ships an update every 27 months, RPLab every 2 months. The most recent releases landed on September 22, 2026 and September 21, 2026 respectively.
| Parameter | Start Line App | RPLab |
|---|---|---|
| Price | Free — better | $4.99 |
| Update frequency | Every 27 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 16.2 |
| Further details — not scored | ||
| Size | 1 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Inaki Gomez | Gergely Gyertyanos |
In-app purchases
Start Line App
No in-app purchases
RPLab
No in-app purchases
