The Sync Score

Latency

The delay between a partner pressing a control and the toy reacting, in-room and across long distance. We don't measure latency, so this axis is scored from published specs and how each connection works (Bluetooth pairing, internet relay, two-way sync).

Stability

How likely the connection is to drop over a session. A toy that disconnects mid-use fails its one job, and it's worse across distance where you can't just re-pair quickly. Scored from published specs and how each connection works (Bluetooth pairing, internet relay, two-way sync).

Range

Two ranges in one axis: Bluetooth reach (phone-to-toy, in-room) and internet-relay reliability (partner control from anywhere). The first covers walls and rooms; the second covers cities and countries.

Fidelity

How accurately the toy follows what it's told — custom patterns, music sync, and two-way sync between paired toys. High fidelity means the toy does what the controlling partner intends, not an approximation.

What is the Sync Score?

The Sync Score is CoupleToyLab's standardized 0-10 editorial rating of how reliable an app-controlled or long-distance toy's connection is likely to be. It's the average of four axes — latency, stability, range, and fidelity — scored from published specs and how each connection works (Bluetooth pairing, internet relay, two-way sync), not from lab testing. We are not aware of another connection-reliability score published in the couples-toy category.

Why does connection reliability matter more than features?

For an app-controlled toy, the connection is the product. A toy with great hardware that drops every few minutes or lags a full second is unusable across distance. Feature lists don't tell you whether a toy will actually work when your partner is in another country — the Sync Score does.

How is the Sync Score calculated?

Each toy is rated on the four axes for both in-room (Bluetooth) and long-distance (partner control routed over the internet) use. The four axis scores are averaged into the 0-10 total. We have not hands-on tested the toys and we don't measure latency or drop rate, so it is an editorial rating, not a measurement. Each axis is scored from published specs and how each connection works (Bluetooth pairing, internet relay, two-way sync).

Does a high Sync Score mean a toy feels better?

Not directly — the Sync Score measures connection reliability, not sensation. A toy can feel great and still score low if its app is unreliable. We rate sensation, build, and value separately on each product's review. For long-distance couples, though, the Sync Score is usually the deciding factor.