MENTA
👤 Shingo Irie (A build-in-public solopreneur whose note.com and X following of aspiring devs became both the mentors and the learners.)🌐 siteiritec.jp𝕏
A 30-time solo builder turned mentorship into a recurring marketplace, then sold it to Lancers for about $1.9M.
Will it work? · our read
A clean exit. The insight was real: recurring mentorship beats one-off gigs. But the software was cloneable, so the real moat was Irie's audience — and he sold before bigger rivals caught up.
01How the money moves
Learner picks a mentor's monthly plan, from ¥3,000 ($28)
→
Unlimited chat all month; MENTA escrows the payment
→
MENTA takes about 20% from the mentor plus 10% from the learner
02The numbers
$13K MRRStatedFounder-stated, Jan 2020
2020-01source:
140 man yen per month (JPY 1.4M/mo)
$185K/mo is GMV (turnover), not revenue; MENTA kept about 20-30% of each deal. Nikkei on the buyout
About $13K/mo revenue in early 2020; sold to Lancers for about $1.9M that October.
🔒
You have the verdict. Members get the work behind it.
- The CENTS scorecard — where it's strong, where it's soft
- The founder's key move, and the counter-move
- How it could die — the evidence, and how sure we are
- The case against our own call
- A 🚀 launchpad prompt — the case, as a plan for your business
We rate our own confidence — and argue against ourselves. Nobody else in this category does.
Sources always public on all 560 cases · cancel anytime · 14-day refund
See a full teardown, free → ImportYetiSourcesSources last checked 25 August 2026
Irie: how a solo project hit $13K/mo (note.com, first-party)Nikkei: Lancers acquires MENTA mentor-matching service (2020)M&A Cloud: the about $1.9M Lancers-Iritec deal, 20% takeMENTA fee structure: mentors pay 20%, learners pay 10% (menta.work)Shingo Irie (note, @iritec) — the founder's own blog.
Revenue is first-party: founder Shingo Irie disclosed ¥1.4M/mo (about $13K) in Jan 2020 on his own note.com — STATED, verified. GMV of $185K/mo (Sep 2020) and the about $1.9M (¥200M) Lancers buyout come from Nikkei and M&A Cloud; GMV is turnover, not revenue. The disintermediation 'dies' case and the audience-as-moat read are our inference [our read], not founder claims. The $13K/mo figure predates the final GMV doubling, so revenue at the Oct 2020 acquisition was likely higher but was not disclosed. We never score you.