SOS Viewer vs Winder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SOS Viewer
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Smart Orchard System (Viewer) is a user-friendly app designed for durian tree investors and enthusiasts. It allows users to effortlessly monitor and access detailed information about the health, growth, and status of their durian trees in real time. With its intuitive interface, you can track tree conditions, review investment performance, and explore key orchard data with ease. Stay informed and ensure your durian investments thrive with Smart Orchard System (Viewer) —your smart solution for smarter farming.
Winder
This app provides highly accurate time synchronization with atomic time servers. It features beautifully crafted, animated watch dials and optional sound cues for precise timekeeping. Designed for watch enthusiasts, it prioritizes privacy with no data collection.
- Atomic time synchronization (NTP)
- Drift strip for device offset
- Continuous-sweep second hand
- Analog and digital display options
- 12 handcrafted, animated dial themes
- Optional countdown sound cues
- No data collection or tracking
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Winder syncs to public NTP atomic time servers and shows you time you can trust, accurate to the millisecond. Open the app, read the time, set your watch. That's it. Built for collectors who care about the seconds. WHAT YOU GET Atomic time synchronization via NTP (NIST, PTB). The drift strip at the top of the screen shows your device's exact offset from atomic time. No guessing, no rounding. A continuous-sweep second hand that glides like a Spring Drive. Analog face, digital display, or both. Dauphine hands with a center ridge that catches light. Four bundled typefaces. Optional countdown sound cues (mechanical or electronic) so you can set your crown without watching the screen. 12 dial themes drawn from real watch materials: meteorite with Widmanstätten crystal lines, aventurine glass with 1,375 shimmering inclusions, sunburst rays with a rotating specular beam, tapisserie grids, black ceramic waves, and more. Every surface animates. Light sweeps slowly across crystal boundaries. Inclusions catch and release a migrating glow. Specular beams rotate over hours. These are not wallpapers. They are living dial surfaces. Three themes are free. Winder Pro unlocks the full collection with a single purchase. No subscription. PRIVACY Winder collects no data. No accounts. No analytics. No tracking. No crash reporting. Your preferences stay on your device. The only network request is the NTP time sync. That's the entire privacy policy. BUILT BY A WATCH COLLECTOR I couldn't find a precision clock on the phone that felt worthy of the watches it was meant to serve, so I built one. Every dial, every animation, every pixel is crafted with the same care you'd expect from the watches Winder serves. Made in Mexico. Part of the Watchdex ecosystem. watchdex.app
Screenshots
Verdict
The clearest difference is in-app purchases: SOS Viewer at none against Winder's 1. SOS Viewer also leads on iOS requirement (15.6 vs 26.2). Winder's advantage is update cadence (every 5 days vs fortnightly). On price, ads 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
Both are free to download. Winder sells 1 one-off in-app purchase. SOS Viewer asks for nothing beyond the download.
SOS Viewer ships an update fortnightly, Winder every 5 days. The most recent releases landed on October 12, 2026 and October 13, 2026 respectively.
| Parameter | SOS Viewer | Winder |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Fortnightly | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.6 — better | 26.2 |
| Further details — not scored | ||
| Size | 66 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Tech Tree Sdn Bhd | IVAN ALEJANDRO MUNGUIA CRUZ |
In-app purchases
SOS Viewer
No in-app purchases
Winder
- Winder Pro$4.99
