A wonderfully simple side hustle: open a webpage, see a dog, click “dog,” repeat. Earn a little money every day without installing an app or finding customers. Building a website and monetizing its traffic is another route, but creating a site has become easier than attracting visitors. Microtask platforms offer someone else’s existing demand instead.
There is one critical distinction: a service having a website, jobs running in a browser, and those jobs working entirely on a phone are not the same thing.
1. What is data labeling?
Tasks can involve classifying pictures as dogs, cats or cars, drawing boxes around vehicles, identifying positive and negative reviews, judging search relevance, or comparing AI answers. The last two may require research, explanations, training and certification. Basic labeling is not equivalent to professional AI quality assessment.
2. Two starting points for phone users in Japan
CrowdWorks has a task format where answers are entered directly on the platform. Its official guide says submissions must be approved for payment and may be rejected if they fail the requirements. Surveys and data entry are typical uses; each listing still decides whether a phone is sufficient. [1]
Lancers lists information collection, search-result copying and list building. Some listings specifically allow smartphones, but the whole data-entry category is not mobile-ready. [2] You might sign up to classify dog pictures and end up copying URLs. The dog has vanished; at least the browser survived.
3. Specialist AI platforms have hardware requirements
OneForma lists image-labeling and search-evaluation projects available to eligible applicants in Japan. Its conditions include a laptop or desktop, verified phone number, Microsoft account, Payoneer and assessments. It is not phone-only. [3]
RWS TrainAI covers text, image, audio and search evaluation. Its official FAQ requires a Windows or Mac computer and current Chrome. [4] A Japanese quality-assurance listing at TELUS Digital similarly asks for a computer, smartphone and qualification steps. [5]
Clickworker has a particularly awkward catch: its official help says its mobile app is mandatory to approve login, even when the workplace is opened in a web browser. A strict no-app user must rule it out. [6] The shop is on the web; its doorman demands an app.
4. Five yen per task: how long to reach ¥5,000?
A snapshot of Lancers listings showed examples paying ¥5 and ¥22 per task. These were individual listings, not guaranteed continuing work. [2] Before fees and rejected submissions, 1,000 approved tasks at ¥5 reach ¥5,000, whereas 228 tasks at ¥22 exceed it. If each took an assumed two minutes, the hourly equivalents would be ¥150 and ¥660. These are illustrative calculations, not measured working speeds. Finding jobs, applying and waiting for approval also consume time.
The useful figure is money actually received divided by all time spent. Clicking “Next” forever is not a retirement plan.
5. Screen the listings before working
Look for explicit phone compatibility, browser-only workflow, clear approval terms, fees and withdrawal rules. Check for mandatory software, PC use and identity verification. Avoid upfront payments, paid training demands, immediate transfers to private chats and fake-review work. AI can help organize listings, but secretly automating tasks requiring your own judgment may violate project rules.
For a phone browser only, start with compatible CrowdWorks or Lancers tasks. With a computer, OneForma and RWS become additional options. No platform guarantees daily work or income. Running your own site requires traffic; doing microtasks requires enough tasks at an acceptable rate.
You came to classify dogs. Your first classification should be the listings themselves: phone-compatible, PC-required, or app-required.
References (6)
- CrowdWorks task guide crowdworks.jp
- Lancers listings lancers.jp
- OneForma requirements oneforma.com
- RWS TrainAI FAQ rws.com
- TELUS Digital Japanese role jobs.telusdigital.com
- Clickworker app verification support-workplace.clickworker.com





