Spark System vs GREEMS
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Spark System
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SPARK is a professional command-and-control platform built for emergency response teamsβhelping communities coordinate faster, communicate clearly, and manage incidents with confidence. WHAT SPARK DOES ALERTING * High-visibility pop-up alerts (in-app + optional phone call) * Persistent callback logic (can retry until acknowledged) * Real-time status: who received, who answered, who is available COMMAND & CONTROL * Live map of team deployment (location, role, key operational attributes) * Manage incidents directly on the map: meeting points, points of interest, notes * One-tap navigation to relevant locations COMMUNICATION * Instant Push-to-Talk (PTT) * Real-time operational conference calls * Cross-platform communication: mobile app + computer + landline support ADMINISTRATION * Shift registration and scheduling * Alert monitoring and shortage notifications * Event log and operational history * Role-based permissions and oversight tools BUILT FOR RELIABILITY IN THE FIELD * Operates via internet and/or telephony infrastructure (including landlines) * Automatic switching between infrastructures when needed * Load-resistant backend designed for high-demand moments SECURITY, PRIVACY, AND CONTROL * Multi-layer encryption and strict authentication * Runs on secured cloud infrastructure * Privacy-first location sharing: location is shown only with explicit user consent * Permission system tailored to roles, with safeguards for sensitive actions ACCESSIBILITY AND SIMPLICITY * Clear, user-friendly interface for all levels of tech experience * Built-in accessibility options (including visual accessibility support) BATTERY-SAVING MODE * Built-in power-saving controls managed by the user * Proven effective in extensive real-world use IMPORTANT: SPARK is intended for authorized emergency response organizations and official teams. It is not a replacement for national emergency services. In an immediate life-threatening emergency, contact your local emergency number.
GREEMS
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With Green Energy Management System, you have access to all public charging stations and can check for their nearest location, availability, and tariffs in real-time, as well as navigate to them. All via one app!
Screenshots
Verdict
Spark System and GREEMS are too close to call on the numbers: across 6 compared parameters β price, update cadence, ads and in-app purchases among them β neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Spark System ships an update fortnightly, GREEMS every 4 weeks. The most recent releases landed on September 20, 2026 and September 23, 2026 respectively.
| Parameter | Spark System | GREEMS |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly β better | Every 4 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 β better | 15.6 |
| Further details β not scored | ||
| Size | 151 MB | 83 MB |
| Age rating | 17+ | 4+ |
| Developer | mati skiba | Oren Gozlan |
In-app purchases
Spark System
No in-app purchases
GREEMS
No in-app purchases









