STS TESSmobile vs Flash Tree
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
STS TESSmobile
Monitor and control traffic light systems remotely. View real-time traffic signal status and adjust configurations for efficient traffic management.
- View traffic light status
- Manage traffic light configuration
- Remote monitoring
- Real-time data
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View current traffic light status and manage configuration.
Flash Tree
Synchronize countdown timers across multiple devices for group races or events. Start races instantly without needing external assistance. Ideal for competitive activities where precise timing is crucial.
- Synced countdown timers
- Group race functionality
- Start races instantly
- Multi-device synchronization
- Customizable countdowns
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Flash Tree is like having a synced countdown in your pocket. No more having to ask someone to start a race. Just select your preferred countdown, hit start, and GO! You can sync multiple devices to the same countdown for a group race. Flash Tree has 2 payment options Free: You can join any race invited by others for free Paid: The app asks for $1.99/month subscription to start race and invite others. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: STS TESSmobile at 5.0 against Flash Tree's 4.0. STS TESSmobile also leads on in-app purchases (none vs 1). Flash Tree's advantage is update cadence (every 10 days vs every 4 months) and iOS requirement (11.0 vs 15.0). On price, ratings volume, 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. Flash Tree sells 1 in-app purchase, starting at $9.99 per month. STS TESSmobile asks for nothing beyond the download.
STS TESSmobile holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 4 respectively.
STS TESSmobile ships an update every 4 months, Flash Tree every 10 days. The most recent releases landed on June 1, 2026 and June 4, 2026 respectively.
| Parameter | STS TESSmobile | Flash Tree |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.0 (4 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 2 | 4 — better |
| Update frequency | Every 4 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 14 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Superior Traffic Services, LLC | BUILDMYPAGE, LLC |
Customer experience
STS TESSmobile
Flash Tree
In-app purchases
STS TESSmobile
No in-app purchases
Flash Tree
- Flash Tree Subscription$9.991 Month
