ESF Mobile vs Relationship tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ESF Mobile
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ESF Mobile makes it easy to manage the UC Merced Experimental Smart Farm by bringing field data and imagery straight to your phone. View farm maps with crop boundaries, explore satellite and drone imagery over time, and track crop health with simple visualization tools. The app helps you stay organized with crop types, field details, giving you a clear picture of what’s happening across the farm in one place.
Relationship tracker
This app provides a private space for couples to track their relationship journey. It offers features like a live dating counter, a shared timeline for memories and milestones, and widgets to display relationship progress. It's designed to help couples celebrate their connection, whether they are new, long-distance, or married.
- Live dating counter
- Shared moments timeline
- Memory mapping
- Private couple space
- Home screen widgets
- Distance tracking for LDRs
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Duo is a private couple space and relationship tracker designed for two people. Start solo and invite your partner anytime with a simple invite code. Whether you’re a new couple building memories, in love and tracking your relationship, in a long-distance relationship, or already married, Duo helps couples track their relationship and celebrate their journey together. Why couples use Duo - See how long you’ve been together with a live dating counter and love counter - Track your relationship with a simple relationship tracker and dating tracker - Save special memories, milestones, and love notes in your couple timeline - Use widgets to see your relationship progress directly on your screen - Keep a private space built just for you and your partner Duo makes it easy to remember the little things and celebrate the big ones. Features Time Together Counter See exactly how long you’ve been together from your chosen start date. Display your relationship time in years, months, days, hours, or minutes. Perfect for anniversaries, milestones, and everyday reminders of your relationship. Moments Timeline Save memories, events, and milestones in a shared relationship timeline. Capture both past memories and upcoming events so you can revisit your story anytime. Rich Moment Details Add photos, notes, dates, and locations to your moments. Search and filter memories easily to rediscover important parts of your relationship. Map + Distance See distance and shared location context when you both enable location sharing. Great for long-distance couples who want to feel more connected. Memory Map Explore your shared memories visually on a map and see where important moments happened. Private Duo Space Create or join a couple using a secure invite code. Your shared relationship space stays private between you and your partner. Widgets (Duo Pro) Add beautiful widgets to your Home Screen or Lock Screen. Widgets make it easy to keep your relationship visible throughout the day. Built for real relationships Whether you’re a new happy couple building memories, in love and looking for something to track, in a long-distance relationship, or a perfect match or married, Duo helps couples track their relationship and celebrate their journey together. Start your shared timeline today. Download Duo and begin building your relationship story together. ============= Terms of Service: https://keinois.com/duo/terms-of-service Privacy Policy: https://keinois.com/duo/privacy-policy
Screenshots
Verdict
The clearest difference is in-app purchases: ESF Mobile at none against Relationship tracker's 6. ESF Mobile also leads on device support (3 vs 1) and iOS requirement (13.0 vs 18.0). On price, update cadence and ads 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. Relationship tracker sells 6 in-app purchases, starting at $0.99 per 7 days. ESF Mobile asks for nothing beyond the download.
ESF Mobile ships an update fortnightly, Relationship tracker every 2 weeks. The most recent releases landed on October 11, 2026 and October 8, 2026 respectively.
| Parameter | ESF Mobile | Relationship tracker |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.6 (11 ratings) — better |
| Number of ratings | — | 11 — better |
| Update frequency | Fortnightly | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 82 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | UC Merced | Lyndavan Doan |
In-app purchases
ESF Mobile
No in-app purchases
Relationship tracker
- Duo Pro (Week)$0.997 Days
- Duo Pro (Week)3 Days trial$2.997 Days
- Duo Pro (Annual)$8.991 Year
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- Duo Pro (Annual)$17.991 Year
- Duo Pro (Lifetime)$14.99
- Duo Pro (Lifetime)$29.99
Questions
Is ESF Mobile free?
Is Relationship tracker free?
Do ESF Mobile or Relationship tracker have ads?
Which is updated more often, ESF Mobile or Relationship tracker?
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