Attach rate: definition and use in a computer club

Attach rate — bar-to-session conversion

Attach rate (bar attachment rate) — the share of sessions in which a player made a bar order. It shows how effectively the bar “attaches” to the core product — game time.

Definition

Attach rate is a specific type of internal conversion: out of N players who came to the club, what percentage also made a purchase at the bar? The term comes from retail and tech commerce, where the share of accessory purchases relative to a main product is tracked.

In a computer club, the bar is the second most important revenue center after game time. But the bar only generates revenue when players use it. Attach rate measures how actively they do.

Attach rate ≠ bar revenue. High bar revenue with low attach rate means a few players buy a lot. High attach rate with moderate revenue means many players buy a little. For sustainable growth, attach rate matters most: it shows that bar purchases have become a habit, not a one-off event.

How it is calculated

Attach rate = number of sessions with a bar order ÷ total sessions in the period × 100%

Example: 800 sessions closed in a month. 240 of them included a bar order. Attach rate = 240 ÷ 800 = 30%.

Important: calculate per sessions, not per unique players. One player may have visited 10 times and ordered at the bar in 3 of them — their attach rate = 30% at the session level. This is more accurate than “player ordered at least once.”

An additional breakdown — attach rate by time of day or day of week. It is often lower during daytime hours (schoolchildren with limited budgets) and higher in the evening (students and adults).

Where to view in IZI

In the Analytics section by comparing the number of sessions with bar orders to the total number of sessions for a period. The bar sales report shows the share of sessions with a purchase relative to total traffic.

Effect on AOV and revenue

Attach rate is a direct lever on AOV:

AOV gain from attach rate growth = (new attach rate − old) × average bar order value

Parametrically: if attach rate grew from 20% to 35% and the average bar order = B, then AOV gain = 0.15 × B. With 500 sessions per month that is 0.15 × 500 × B in additional bar revenue — without changing tariffs.

Tools to grow attach rate

Visibility: menu, equipment, and products must be visible to the player without special effort. A menu card at the monitor outperforms a poster at the entrance.

Timing: the best moment is session registration. Administrator at launch: “Anything from the bar?” — this standard script raises attach rate by 5–10 p.p. in most clubs.

Payment convenience: in IZI a bar order is placed at the same cashier as the session — no separate queue. This reduces friction and increases attach rate compared to clubs where players have to go to a separate counter.

Combo offers: “1 hour + drink” as a single tariff sets the expectation of a bundle, not an optional add-on.

Common mistakes

• Not tracking attach rate separately from bar revenue — revenue may grow due to price increases while attach rate falls. These are different signals.
• Not segmenting by time of day — low attach rate in morning hours is normal; don’t try to “fix” something that behaves as expected.
• Evaluating administrators only on revenue, not attach rate — an administrator who sells a small amount of expensive items may have low attach rate. Both metrics matter.

Related

• AOV — attach rate directly affects average check
• Upsell rate — attach rate is a type of upsell rate for the bar
• Shift — bar sales results are recorded in the shift report
• Hall utilization — high utilization with low attach rate = missed revenue

FAQ

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