Lumi
Concept · v0.3 · Apr 2026

School management,
spoken into existence.

Lumi is the first Conversational SMS for SEA preschools — teachers narrate the child's day by voice, principals run the school through conversation. Forms and menus recede; AI drafts, humans approve, the system executes.

01 — VOICE-FIRST
Teachers narrate, no typing
90 seconds of voice → full daily report. Borrowed from medical scribe patterns (Abridge, DAX).
02 — CHAT-DRIVEN OPS
Principals command, no clicks
Refunds, form chase-ups, NL analytics — one sentence and done. AI shows the draft, owner approves with one tap.
03 — REVIEW-BEFORE-SIGN
AI drafts, humans sign
Every write-action has an immutable audit trail. Large amounts require explicit tap confirmation — never voice-only.
CONTENTS
  1. A · Voice-to-Daily-Report3
  2. · Today / Sunflower class01
  3. · Recording — Minh02
  4. · Parsed report draft03
  5. B · Chat-Driven Operations5
  6. · Admin home04
  7. · Refund · confirm-before-execute05
  8. · Form chase · bulk reminders06
  9. · Natural-language analytics07
  10. · Audit log08
LEGEND
highlight Extracted by AI from voice
highlight Needs confirmation / manual edit
FLOW A 3 SCREENS

Teacher · narrating the child's day

She just speaks. Lumi listens, extracts, drafts the report — she reviews and sends to parents via Zalo within 90 seconds.

FLOW B 5 SCREENS

Principal · running ops through conversation

Refunds, chasing forms, asking for numbers — one line of chat. AI builds the action, the audit trail captures it, owner approves in one tap.

9:41
WEDNESDAY · APR 29
Sunflower class
Ms. Huong · 18 kids · 14 checked in
LUMI · SUGGESTION FOR TODAY
14:32
4 kids still don't have an afternoon log. Start with Minh — he usually leaves early.
PENDING LOG · 4
Done · 14
MH
Nguyễn Bảo Minh
3 yrs · pickup 16:30 · mom Lan
PENDING
AN
Trần Quỳnh Anh
4 yrs · pickup 17:00
PENDING
PK
Lê Phương Khanh
3 yrs · pickup 17:15
PENDING
HK
Dang Hoang Khang
3 yrs · pickup 17:30
DONE
Tap to log for one child
or type manually
01 · TODAY
Class list + AI nudge suggesting which child to log first. One dominant mic button — no forms.
9:42
REC · 00:47
MH
LOGGING FOR
Nguyen Bao Minh
LISTENING · VIETNAMESE
LIVE TRANSCRIPT
This morning Minh ate half a portion of chicken rice, refused to eat vegetables. At noon he napped for an hour and a half, a bit restless. In the afternoon he was a little fussy from teething, I gave him warm water. Ms. Huong took 2 photos while he played with blocks
Lumi extracted 3 fields: meals · nap · health notes. Keep speaking or tap stop to review the draft.
Pause · Stop & review draft · Attach photo
02 · RECORDING
Dark mode to reduce distraction. Real-time Vietnamese transcription with AI highlighting the extracted fields.
9:43
DRAFT · NOT SENT
MH
Daily log · Minh
29/04/2026 · Ms. Huong · from 00:47 of voice
Confidence 92% · 3 fields extracted, 1 needs confirmation 2 min
MEALS
AI
Lunch · chicken rice, half portion · no vegetables
NAP
AI
1 hour 30 minutes · 12:30 → 14:00 · light restless sleep
MOOD · NEEDS CONFIRMATION
EDIT
Afternoon a little fussy from teething
PHOTOS · 2
TEACHER APPROVES · LUMI SENDS · WRITES AUDIT
03 · PARSED DRAFT
AI filled 4 fields, highlighting the parts extracted from voice. Low-confidence fields get an orange border and require teacher confirmation before sending.
9:41
Lumi
● ONLINE · ANH DUONG PRESCHOOL
TODAY · 9:41
Hi Mai. 3 items waiting for your review this morning:
  • ●4 parents haven't paid May tuition (due May 5)
  • ●7 parents haven't submitted the health-check form
  • ●Ms. Huong is off Friday — Ms. Lien is covering
9:41 · LUMI
Create a refund for Minh for May — he was out sick for 2 weeks
9:42 · MAI
BUILDING REFUND
Pulled invoice INV-2526-014, prorating 2/4 weeks, drafting the message…
VI · EN · HOLD MIC TO SPEAK · ↵ TO SEND
04 · ADMIN HOME
A chat surface in place of a dashboard. AI briefs the 3 things to handle, suggests contextual chips, accepts voice + text input.
9:42
Refund · Minh · May/2026
LUMI UNDERSTOOD · CONFIDENCE 96%
Refund tuition for Nguyễn Bảo Minh, reason sick leave 2 weeks in May (medical confirmation on 12/4).
ORIGINAL INVOICE INV-2526-014
Tuition May/20264.800.000 ₫
Meals (20 days)600.000 ₫
Paid 02/055.400.000 ₫
PRORATE · LUMI CALCULATED
Tuition refund · 2/4 weeks2.400.000 ₫
Meal refund · 10/20 days300.000 ₫
TOTAL REFUND
2.700.000 ₫
TRANSFER TO
Vietcombank
**** 4827
DRAFT TO MOM LAN · ZALO
"Hi Lan, the school has confirmed a refund of 2.700.000 ₫ for Minh's May tuition since he was out sick for 2 weeks. The money will arrive at Vietcombank **** 4827 in 1-2 business days. ❤️"
TAP TO CONFIRM · VOICE-ONLY NOT ACCEPTED FOR > 1M
AI HEARD · ADMIN APPROVE · SYSTEM EXECUTE → AUDIT LOG
05 · REFUND · CONFIRM-BEFORE-EXECUTE
Amount printed large in mono. "AI heard 96%" banner + clear approve button + audit trail at the bottom. Voice-only blocked for transactions >1M.
9:44
Chase health-check form
7/86 parents haven't submitted the 2025-26 health-check form. Lumi has drafted personalized reminders matching each parent's preferred channel. Approve one by one or send all 7.
MH
Mẹ Minh · Sunflower
ZALO
4 days overdue · 1 reminder sent
"Hi Lan, tomorrow is Minh's first day of the school year. Could you submit the health-check form by 5pm today? Form here 👉 link"
AN
Bố Quỳnh Anh · Sunflower
SMS
2 days overdue · doesn't use Zalo
"AD MAM NON ANH DUONG: Anh Tuan oi, form kham SK be Quynh Anh con thieu. Nop o: a.lumi.vn/f/9zk7. Cam on!"
PK
Mẹ Phương Khanh · Tulip
EMAIL
1 day overdue · expat parent
"Hi Sarah, just a gentle reminder — Khanh's annual health form is due. Kindly submit before EOD Friday. Link: …/f/8h2 🌸"
TN
DT
VL
+1
4 other parents · Zalo
7/7 selected 3 ZALO · 2 SMS · 2 EMAIL
06 · FORM CHASE · BULK
Each reminder written per channel preference (Zalo casual, SMS no-diacritics, email English for expats). One button sends all 7 messages.
9:46
ANALYTICS · WEEK 17
"Anything notable in Sunflower class this week?"
LUMI · 4 DATA SOURCES
Sunflower this week is stable: average attendance 94%, higher than the previous 2 weeks. 3 kids are showing flu symptoms at the same time — I suggest sending a handwashing reminder to the whole class.
ATTENDANCE · 4 WEEKS
▲ +6%
W14W15W16W17
FLU CLUSTER · 3 KIDS
MON · MON · TUE
Minh, Quỳnh Anh, Hoàng (same dining-table corner). Suggest disinfecting the classroom.
📎 SOURCES · 4 DATA TABLES VIEW
· attendance.daily · 28/04 → 02/05
· daily_reports.health · 18 reports
· class_roster.sunflower · 18 kids
· incidents.health · 3 records
07 · NL ANALYTICS
Open question → text + 2 inline charts + citations to each table. Suggests next-action instead of just returning a dashboard.
9:48
Audit log
Immutable · ready for ECDA / MOET audit SHA256 ✓
TODAY · APR 29
Refund · 2.700.000 ₫
9:42:18
· AI heard "create refund for Minh May"
· AI drafted 2.700.000₫ · prorate 2/4 weeks · INV-014
· Admin Mai · confirmed tap · 9:42:11
· System executed · txn tx_7f9k…2a4
Bulk reminder · 7 parents
9:44:02
· AI drafted 7 messages · 3 Zalo, 2 SMS, 2 email
· Admin Mai · approved bulk · skipped 0
· System · 7/7 delivered · 0 failed
Daily report · low confidence
9:43:50
· Ms. Huong · voice 47s · Minh
· AI parsed 4 fields · 1 below 80%
· Ms. Huong · edited field "mood" before sending
· Sent to mom Lan · Zalo · ✓ delivered
NL query · no write
9:46:30
· Read-only · Mai · "Sunflower this week"
23 entries · today EXPORT CSV / PDF
08 · AUDIT LOG
"AI heard / drafted · Admin confirmed · System executed" — a 4-line chain for every write-action. Immutable, hash-chained, audit-ready.
DESIGNER NOTE ~150 WORDS

Risky calls & what I'd iterate next

Riskiest call: pushing the entire teacher daily log into voice. A preschool classroom is an extremely noisy environment — kids crying, toys clattering, regional accents. If Vietnamese ASR drops below 88% real-world accuracy, the "AI parsed" highlights become counterproductive — teachers spend more time correcting than typing from scratch, and trust in the product collapses in the first week of rollout.

Next iteration: (1) add a resume / append mode so the teacher can speak about each child separately — not forced into a 90-second monologue; (2) try splitting the refund screen into 2 steps (preview → tap-to-arm → tap-to-confirm) for amounts > 5M, borrowing from banking flows; (3) test the "expat parents read English" hypothesis for real — they may actually prefer bilingual with Vietnamese first.

LUMI · CONCEPT · APR 2026 · 8 SCREENS · 2 FLOWS