Brandwave

Optifast vs Weight Watchers:Which is more popular in New Zealand?

In October 2026, Optifast had more branded searches than Weight Watchers among weight loss programmes in New Zealand. Optifast had about 4,360 branded searches, while Weight Watchers had 1,000. Optifast made up 57% of all weight loss programme searches we track, and Weight Watchers accounted for 13.1%. When we asked ChatGPT and Google AI Overviews about weight loss programmes, Optifast and Weight Watchers each appeared in one of the five answers.

Among weight loss programmes in New Zealand in October 2026

Who do people search for more?

Optifast, about 4 searches for every 1 for Weight Watchers

Optifast 4.4K searchesWeight Watchers 1K searches

Who does AI mention more?

Both were mentioned in 1 of 5 answers.

Optifast in 1 of 5Weight Watchers in 1 of 5

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Top weight loss programmes in ChatGPT and Google AI Overviews

In three ChatGPT questions and two Google AI Overviews, Optifast was mentioned in one out of five: not in any of the three ChatGPT answers, but in one of the two Google AI Overviews. Weight Watchers was mentioned in one out of five: in one of the three ChatGPT answers, but not in either of the two Google AI Overviews.

Mentioned by AI

Each dot is one answer, filled in when that answer mentions the brand.

  • Green Prescription3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Optifast1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Weight Watchers1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Jenny Craig0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers

See every answer about weight loss programmes

5 answers

  • Asked ChatGPT

    “Which weight loss programme should I join in New Zealand?”

    1. 1Weight Watchers
    2. 2Green Prescription

  • Asked ChatGPT

    “What are the best weight loss programmes in New Zealand?”

    1. 1Green Prescription

  • Asked ChatGPT

    “What's the best weight loss programme in New Zealand for steady weight loss?”

    1. 1Green Prescription

  • Searched Google, AI Overview

    “weight loss programme nz”

    1. 1Optifast

  • Searched Google, AI Overview

    “weight loss plan nz”

    Not named in any answer:

    Brands are shown in the order each answer named them. The survey took place in New Zealand on October 21, 2026.

    Is Optifast or Weight Watchers more popular in search?

    This chart shows how often people search Google for Optifast and Weight Watchers by name. Each line represents a brand's share of searches for all four weight loss programmes we track, month by month, from searches in New Zealand.

    Optifast and Weight Watchers among weight loss programmes in New Zealand, by month

    Share of searches by month for Optifast, Weight Watchers. The figures are in the table below the chart.

    View monthly share of searches table
    MonthOptifastGreen PrescriptionWeight WatchersJenny Craig
    Nov 202557.2%14.7%21.7%6.5%
    Dec 202545.7%14.4%32.1%7.8%
    Jan 202647.2%13.2%31.8%7.8%
    Feb 202653%17.5%22.7%6.8%
    Mar 202649.4%22%22%6.6%
    Apr 202650.7%17.7%23%8.5%
    May 202646.2%21.3%26.2%6.4%
    Jun 202650.3%21.6%21.6%6.5%
    Jul 202655.7%18.5%18.5%7.2%
    Aug 202656.1%18.4%18.4%7.2%
    Sep 202656%21.2%16.3%6.4%
    Oct 202657%24.8%13.1%5.1%

    How has branded search for Optifast and Weight Watchers changed in New Zealand over the last 12 months?

    3 findings

    How did search popularity change for New Zealand weight loss programmes in October 2026?

    2 changes

    1. In October 2026, Optifast gained share of searches among weight loss programmes in New Zealand, from 56% to 57%.

    2. In October 2026, Weight Watchers lost share of searches among weight loss programmes in New Zealand, from 16.3% to 13.1%.

    How are Optifast’s and Weight Watchers’ branded searches counted?

    11 search terms

    Brandwave collects information about searches that people make online using Optifast’s and Weight Watchers’ names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.

    Optifast

    10 branded search terms

    • chocolate optifast
    • optifast
    • optifast bars
    • optifast chocolate bars
    • optifast dessert
    • optifast diet
    • optifast protein plus
    • optifast soup
    • optifast vlcd
    • optifast weight loss

    Weight Watchers

    1 branded search term

    • weight watchers

    How the Brand Demand Index is measured

    Other head-to-heads among weight loss programmes

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