SOS Radar vs Chameleon GO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SOS Radar
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SOSRadar is a nearby search-assistance tool that helps people in distress and nearby searchers see each other more clearly. When SOS mode is active, the app broadcasts a nearby distress signal and shows discovered searchers on a radar. In Search mode, it scans for nearby SOS signals and uses distance and direction to help indicate where they may be. When a responder has shared a usable location, the target can also be opened in Apple Maps. Key features: - Nearby SOS broadcasting and device discovery - Search radar using distance, device heading, and available location data - Lists of nearby SOS signals and searchers - Nearby sharing of SOS location and status - Local warning sound requests for connected SOS devices - Keep-awake SOS screen for ongoing status visibility SOSRadar uses Bluetooth, local-network connectivity, and location services to improve nearby discovery and directional guidance. Distance, direction, and location may be affected by surroundings, device conditions, signal obstruction, and location accuracy. Important: SOSRadar is NOT a replacement for emergency services and does not automatically contact police, medical providers, or rescue organizations. In an emergency, call your local emergency number first and contact professional responders whenever possible.
Chameleon GO
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Control your Chameleon Ultra and Lite from your iPhone over Bluetooth. *Requires a Chameleon Ultra or Chameleon Lite device (sold separately). • Read HF (MIFARE, Ultralight, NTAG) and LF (EM410x, HID, and more) tags • Emulate cards in your device slots — 3 free, all 8 with a one-time unlock • Recover MIFARE Classic keys: dictionary, MFKey32/64, Nested • Write & copy magic cards (Gen1a,Gen2,Gen3,Gen4,T5577) • Manage slots, edit dumps, and update firmware (DFU) No ads, no tracking — your cards and keys never leave your device unless you export them. For research and cards you own or are authorized to test. Not affiliated with RFID Research Group. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula
Screenshots
Verdict
The clearest difference is in-app purchases: SOS Radar at none against Chameleon GO's 1. SOS Radar also leads on iOS requirement (13.3 vs 18.0). 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. Chameleon GO sells 1 one-off in-app purchase. SOS Radar asks for nothing beyond the download.
| Parameter | SOS Radar | Chameleon GO |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Fortnightly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 13.3 — better | 18.0 |
| Further details — not scored | ||
| Size | 5 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | jianwei du | Konstantin Rafikov |
In-app purchases
SOS Radar
No in-app purchases
Chameleon GO
- 8 Slots$4.99









