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POS & Retail Software opportunities·tracked since 06 Sept 2026·evidence from 21 Jan 2020·latest post 04 Nov 2026

POS & Retail: Payment Errors and Unstable Connections

Many users experience significant issues with payment processing and app functionality, leading to frustration and inefficiency in sales transactions. These problems include frequent errors in order creation, payment failures, and poor customer service, which collectively hinder the overall user experience and trust in the platforms.

15 different people have complained about this since 21 Jan 2020, most recently on 04 Nov 2026. 1 of them in the last 30 days.

  • user·017e· App Store· 13 May 2020original ↗
    “Khuyên mọi người ai đang có ý định dùng thì nên chuyển sang mua bên khác cho đỡ mất tiền oan!”
  • user·9701· App Store· 20 Oct 2024original ↗
    “Hay bị lỗi ko tạo được đơn/ ko thanh toán được, làm ảnh hưởng tới việc bán hàng.”
  • user·02da· App Store· 27 Nov 2024original ↗
    “Ép khách mua thêm ứng dụng chứ không đồng ý cho kết nối vào trong khi dịch vụ Sapo không hỗ trợ cái cơ bản nhất là hỗ trợ thanh toán trả góp bằng cách check ngay nút mua hàng.”
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15 people in 15 posts across 2 sources · 1 in the last 30 days, 0 in the 30 before

Pain pointStable
People in the last 30 days
1
0 in the 30 days before · 15 in all
Posts per week, last 16 weeks · 1 in the past 4 · the last 2 weeks are still coming in

The pain

shares of 13 people

What goes wrong, and for whom

Who
15 people using KiotViet, Sapo, Sapo Order and POS365.VN
What goes wrong
  • KiotViet: App crashes and forces unexpected logouts2 people · 15%
  • Sapo: App lags and crashes constantly2 people · 15%
Since
21 Jan 2020 → 04 Nov 2026

Is this a startup idea?

Not directly. These are complaints about a product or service people already use — the fix belongs first to that provider.

Complaints are about
KiotViet, Sapo, Sapo Order and POS365.VN
Looking for something else
7% want an alternative · 13% ask the provider for a feature
What the numbers say
Almost nobody is looking for a different product — people want this provider to fix it, not a new option.
Build a prototype from thisA landing page written from these 15 complaints by 15 people.50 credits · sign in →
1

The pain — what people say

Their asks, who is writing, and the posts themselves

What people were doing

Every post behind this page, by what its author was doing — and when each one was written

15posts
  • Complaint1280%
  • Looking for an alternative17%
  • Request213%
21 Jan 202015 posts04 Nov 2026

Sources

15 signals · 2 sources

App Store14
Google Play1
Only public content is collected, author names are stored as one-way hashes, and every excerpt links back to its original post.

Evidence

Raw public posts behind this opportunity — click through to the original. 1 post was held back as off-topic; all 15 still count toward the score.

  • user·017eApp StoreApp Store VN/POS & bán lẻ·13 May 2020·Looking for an alternativesource ↗

    …ệc cho mình ai ngờ mình làm việc cho nó. Lại mua thêm bực vào người. Khuyên mọi người ai đang có ý định dùng thì nên chuyển sang mua bên khác cho đỡ mất tiền oan! Thanks!

    FrustratedSwitching away
  • user·9701App StoreApp Store VN/POS & bán lẻ·20 Oct 2024·Complaintsource ↗

    Sapo — Tệ Hay bị lỗi ko tạo được đơn/ ko thanh toán được, làm ảnh hưởng tới việc bán hàng.

    Doesn't work
  • user·02daApp StoreApp Store VN/POS & bán lẻ·27 Nov 2024·Requestsource ↗

    Sapo — Sapo cực kỳ lưu manh Ép khách mua thêm ứng dụng chứ không đồng ý cho kết nối vào trong khi dịch vụ Sapo không hỗ trợ cái cơ bản nhất là hỗ trợ thanh toán trả góp bằng cách check ngay nút mua hàng. Mọi Người nghiên cứu kỹ trước khi ký kết với Sapo nên tham khảo các bên dịch vụ web uy tín khác.

    Missing feature
  • user·f7bdGoogle PlayGoogle Play VN/POS & bán lẻ·08 Jul 2026·Complaintsource ↗

    POS365.VN lỗi đồng bộ giữa các thiết bị khá tệ, 1 máy lên món, máy tính tiền k thấy, đôi khi thanh toán rồi nhưng bên máy order k mất bill

  • user·47f5App StoreApp Store VN/POS & bán lẻ·21 Jan 2020·Complaintsource ↗

    Sapo — K hề gửi mail đến cho khách hàng Sapo báo là t3-4-6 sẽ đối soát gửi maill đến để thanh toán chuyển tiền vào tài khoản nhưng thực tế m k hề nhận được maill nào, thành ra tiền cũng k được thanh toán chuyển khoản cho m luôn

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2

Market and score

Products already there, how the score moved, and what it is made of

Opportunity history

Every score change is stored as a snapshot — click a sub-score to overlay it

Why did it move?

Score 44.7 → 44.6 · 07 Nov 2026, 00:00 → 01:15 UTC

Score attributionSign in — it's free
How the score was measured
38 measured values behind the seven sub-scores · each shows the value, then the points it earned out of 100
Show ↓
Market size
Distinct people affected15 → 37
Distinct communities1 → 17
Distinct sources1 → 35
Adjacent categories1 → 32
Regions / languages1 → 28
Competition
Existing products5 → 50
New entrants (90d)0 → 0
Funded players0 → 0
Market maturity3.2 → 35
Incumbent activity0 → 0
Monetization
Stated willingness to pay0 → 0
Existing paid products5 → 50
Pricing complaints0 → 0
Business context0 → 0
Momentum
Period-over-period growth100 → 95
Latest period growth100 → 96
Sustained trend2.7 → 48
Acceleration9.9 → 62
Pain
Complaint intensity20 → 20
Complaint frequency100 → 100
Negative sentiment-50 → 50
Willingness to switch0 → 0
Urgency0 → 0
Willingness to pay0 → 0
Repeat complaints0 → 0
Demand
Mention volume1 → 9
Explicit requests0 → 0
Distinct people1 → 10
Questions asked0 → 0
Alternative searches0 → 0
Feature requests0 → 0
Evidence
Evidence volume15 → 34
Source diversity2 → 55
Extraction confidence27.3 → 27
Source credibility71.9 → 72
Duplicate rate0 → 100
Freshness4.2 → 82
Cluster cohesion100 → 100

Questions about this idea

Is POS & Retail: Payment Errors and Unstable Connections a startup idea?
Not directly. These are complaints about a product or service people already use, and the fix belongs first to that provider. The page shows what is frustrating users and how badly — not an open market to start a company in.
How many people have this problem?
15 different people described it independently, in 15 mentions, the earliest from 21 Jan 2020 and the most recent from 04 Nov 2026. The quotes, with dates and links to the originals, are in the Evidence section.
Is this problem getting worse?
Status: steady — no change the counts can show. 1 people raised it in the last 30 days and 0 in the 30 days before; the status compares its share of everything collected from the same source, so collecting more or less cannot create a trend.

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Written by readers, except comments marked Team, which are ours. Not part of the evidence above and not counted in any score.

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  • Opportunity MarketTeam

    Ứng dụng POS365 gặp lỗi khi kiểm kê khiến số liệu tồn kho về 0, làm 14 người dùng rất bực mình. Điều này ảnh hưởng lớn đến việc quản lý hàng hóa và bán hàng. Mọi người có cách nào để kiểm kê chính xác mà không bị mất dữ liệu không?