Table 1.
Tracing apps in the world. Dep: deployer, government (gov), private (priv), academic (acad), and NGO, Pen: penetration, Tech: used technology, Dest: destroys data when finished, Min: minimized data, Transp: transparency, Central: centralized or decentralized data storage, Status: launched or in development (Source: Adapted from MIT Technology Review [15]).
| Name | Location | Continent | Dep | Users | Pen | Tech | Voluntary | Limited | Min | Transp | Central | Status | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Algeria’s App | Algeria | Africa | Launched | ||||||||||
| COVIDSafe | Australia | Australia | gov | 7,160,909 | 28.64% | Bluetooth | Y | Y | Y | Y | Y | Centralized | Launched |
| Stopp Corona | Austria | Europe | ong | 600,000 | 6.77% | Bluetooth, Google/Apple | Y | Y | Y | Y | Y | Decentralized | Launched |
| BeAware | Bahrain | Asia | gov | 400,000 | 25.49% | Bluetooth, Location | Y | Y | N | N | Centralized | Launched | |
| Corona Tracer BD | Bangladesh | Asia | priv | 500,000 | 0.3% | Bluetooth, GPS | Y | Y | N | N | Centralized | Launched | |
| Coronalert | Belgium | Europe | gov | 970,000 | 8.37% | Bluetooth, Google/Apple, DP3T | Y | Y | Y | Y | Y | Decentralized | Launched |
| ViruSafe | Bulgaria | Europe | priv, gov | 55,000 | 0.79% | Location | Y | Y | Y | N | Y | Centralized | Launched |
| COVID Alert | Canada | America | priv | 5,314,026 | 14.03% | Bluetooth, Google/Apple | Y | Y | Y | Y | Y | Decentralized | Launched |
| Chinese health code system | China | Asia | gov | Location, Data mining | N | N | N | N | N | Centralized | Launched | ||
| CovTracer | Cyprus | Europe | acad | 9000 | 0.77% | Location | Y | N | Y | Y | Y | Decentralized | Launched |
| eRouska | Czech Republic | Europe | gov | 240,000 | 2.25% | Bluetooth | Y | Y | Y | Y | Y | Decentralized | Launched |
| Smitte|stop | Denmark | Europe | priv | 619,000 | 10.69% | Bluetooth, Google/Apple | Y | Y | Y | Y | Y | Decentralized | Launched |
| HOIA | Estonia | Europe | priv | 250,944 | 18.88% | Bluetooth, DP-3T, Google/Apple | Y | Y | Y | Decentralized | Launched | ||
| CareFiji | Fiji | Asia | gov | 27,000 | 3.06% | Bluetooth | Y | Y | Y | Decentralized | Launched | ||
| Koronavilkku | Finland | Europe | gov, priv | 2,500,000 | 45.31% | Bluetooth, Google/Apple | Y | Y | Y | Y | Y | Decentralized | Launched |
| TousAntiCovid | France | Europe | acad | 2,400,000 | 3.58% | Bluetooth | Y | Y | Y | Y | Y | Centralized | Re-launched |
| Corona-Warn-App | Germany | Europe | priv | 18,000,000 | 21.68% | Bluetooth, Google/Apple | Y | Y | Y | Y | Y | Decentralized | Launched |
| GH COVID-19 Tracker | Ghana | Africa | gov | Location | Y | N | N | N | Launched | ||||
| Beat Covid Gibraltar | Gibraltar | Europe | priv | 9000 | 26.69% | Bluetooth | Y | Y | Y | Y | Y | Decentralized | Launched |
| VirusRadar | Hungary | Europe | gov, priv | 35,000 | 0.36% | Bluetooth | Y | Y | Y | Y | Centralized | Launched | |
| Rakning C-19 | Iceland | Europe | gov | 140,000 | 38.45% | Location | Y | Y | Y | Y | Y | Both? | Launched |
| Aarogya Setu | India | Asia | gov | 163,000,000 | 12.05% | Bluetooth, Location | N | Y | Y | N | N | Centralized | Launched |
| PeduliLindungi | Indonesia | Asia | gov | 4,600,000 | 1.72% | Bluetooth, Location | Y | N | N | N | N | Centralized | Launched |
| AC19 | Iran | Asia | acad | 0 | 0.00% | NA | N | N | N | N | N | Launched | |
| Covid Tracker | Ireland | Europe | gov | 1,300,000 | 26.33% | Bluetooth, Google/Apple | Y | Y | Y | Y | Y | Decentralized | Launched |
| HaMagen 2.0 | Israel | Asia | gov | 2,000,000 | 22.51% | Location | N | Y | Y | Y | Y | Centralized | Launched |
| Immuni | Italy | Europe | priv | 9,769,449 | 16.19% | Bluetooth, Google/Apple | Y | Y | Y | Y | Y | Decentralized | Launched |
| COCOA | Japan | Asia | gov | 7,700,000 | 6.09% | Bluetooth, Google/Apple | Y | Y | Y | Y | Y | Decentralized | Launched |
| Shlonik | Kuwait | Asia | gov | Location | Y | N | N | N | Centralized | Launched | |||
| MyTrace | Malaysia | Asia | gov | 100,000 | 0.32% | Bluetooth | Y | N | Y | N | N | Decentralized | Launched |
| CovidRadar | Mexico | America | gov | 50,000 | 0.04% | Bluetooth | Y | N | N | N | N | Centralized | Launched |
| NZ COVID Tracer | New Zealand | Australia | gov | 605,751 | 12.45% | Bluetooth, QR codes, Google/Apple | Y | Y | Y | N | Y | Centralized | Launched |
| StopKorona | North Macedonia | Europe | priv | Bluetooth | Y | Y | Y | Y | Y | Decentralized | Launched | ||
| StopCOVID NI | Northern Ireland | Europe | gov | Bluetooth, Google/Apple | Y | Decentralized | Launched | ||||||
| Smittestopp | Norway | Europe | gov | 158,000 | 2.94% | Bluetooth, Google/Apple | Y | Y | Y | Y | Y | Decentralized | Launched |
| StaySafe | Philippines | Asia | priv | 2,000,000 | 1.87% | Bluetooth | Y | N | N | N | N | Decentralized | Launched |
| ProteGO Safe | Poland | Europe | gov | 725,000 | 1.91% | Bluetooth, Google/Apple | Y | Y | Y | Y | Y | Decentralized | Launched |
| Ehteraz | Qatar | Asia | gov | 2,531,620 | 91.00% | Bluetooth, Location | N | N | N | N | Centralized | Launched | |
| Tawakkalna | Saudi Arabia | Asia | gov | 7,000,000 | 20.77% | Location | Y | N | Y | N | N | Centralized | Launched |
| Tabaud | Saudi Arabia | Asia | gov | Bluetooth, Google/Apple | Y | Y | Y | Y | N | Decentralized | Launched | ||
| TraceTogether | Singapore | Asia | gov | 4,511,200 | 80.00% | Bluetooth, BlueTrace | N | N | Y | N | Y | Centralized | Launched |
| COVID Alert SA | South Africa | Africa | gov | 600,000 | 1.0% | Bluetooth, Google/Apple | Y | Y | Y | Y | Decentralized | Launched | |
| RadarCOVID | Spain | Europe | priv | 7.033.536 | 17% | Bluetooth, DP-3T, Google/Apple | Y | Y | Y | Y | Decentralized | Launched | |
| SwissCovid | Switzerland | Europe | acad | 1,600,000 | 18.67% | Bluetooth, DP-3T, Google/Apple | Y | Y | Y | Y | Y | Decentralized | Launched |
| MorChana | Thailand | Asia | gov | 3,690,000 | 53.15% | Bluetooth, Location | Y | N | N | Decentralized | Launched | ||
| E7mi | Tunisia | Asia | gov | 23,140 | 0.20% | Bluetooth | Y | Y | Y | N | N | Centralized | Launched |
| Hayat Eve Sığar | Turkey | Asia | gov | 14,186,000 | 17.30% | Bluetooth, Location | N | N | N | Y | N | Centralized | Launched |
| TraceCovid | UAE | America | gov | Bluetooth | N | Y | N | Decentralized | Launched | ||||
| NHS COVID-19 App | UK | Europe | gov | 19,000,000 | 28.51% | Bluetooth, Google/Apple | Y | Y | Y | Y | Y | Decentralized | Launched |
| BlueZone | Vietnam | Asia | gov | 20,000,000 | 20.93% | Bluetooth | Y | Y | N | N | Y | Decentralized | Launched |