Runbuds vs Sun Day Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Runbuds
This app allows you to run with friends in real-time, seeing each other's avatars on a virtual track. It includes a run tracker with lock screen support, group relay challenges, and detailed performance statistics with shareable visualizations.
- Real-time avatar tracking
- Live lock screen activities
- Group relay challenges
- Detailed run statistics
- Shareable run visualizations
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Runbuds is the social running app that is truly built for your friends first. /// THE TRACK /// ・ Your avatar moves around a physical track ・ Your friends move around the track with you ・ Pass (or get passed oh no !!!) by your friends /// LOG RUNS /// Our run tracker lets you choose between: ・ An in-app full screen view ・ Live activities on your lock screen /// GROUP RELAYS /// Run towards a shared goal: ・ Set a total distance target ・ Set a timeframe ・ Add your friends to the Relay ・ Run run run run run !!! /// BEAUTIFUL STATS & VISUALS /// ・ See beautiful visualizations of your past runs ・ Sort by date, pace, distance, or difficulty ・ Share images of your runs with your friends /// GET IN TOUCH /// ・ Hit us up with ANY feedback or requests !!! ・ Contact support@runbuds.app
Sun Day Tracker
Monitor your daily vitamin D absorption from sunlight exposure. This straightforward application helps you keep track of your sun-related vitamin D intake.
- Track daily vitamin D intake
- Sunlight exposure monitoring
- Simple interface
- Daily tracking
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A simple app to track you daily vitamin D intake from the sun.
Screenshots
Verdict
The clearest difference is update cadence: Runbuds at every 2 days against Sun Day Tracker's monthly. Runbuds also leads on rating (4.9 vs 4.6) and review sentiment (96% vs 83%). On price, ratings volume, ads and in-app purchases 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.
Runbuds holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 64 and 26 respectively. Written reviews point the same way: 96% of Runbuds's written reviews are positive against 83% of Sun Day Tracker's.
Runbuds ships an update every 2 days, Sun Day Tracker monthly. The most recent releases landed on October 14, 2026 and October 17, 2026 respectively.
| Parameter | Runbuds | Sun Day Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (64 ratings) — better | 4.6 (26 ratings) |
| Positive reviews | 96.3% of reviews — better | 83.3% of reviews |
| Number of ratings | 64 — better | 26 |
| Update frequency | Every 2 days — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, Apple Watch — better | iPhone |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 56 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Light Nudge | permissionless tech, llc |
Customer experience
Runbuds
Sun Day Tracker
In-app purchases
Runbuds
No in-app purchases
Sun Day Tracker
No in-app purchases
