About DealCheck
DealCheck is a free, no-download supermarket price comparison tool built in 2026 by Nipitphand, an indie developer based in Thailand. The goal is simple: help every shopper instantly figure out which product is the best deal — without doing mental math in the aisle.
The Problem That Sparked DealCheck
Picture this: you're standing in the supermarket aisle with two dish soaps in front of you. One is a regular 500ml bottle at ฿89. The other is a Buy 1 Get 1 deal — 450ml bottles at ฿159 each. Which is actually cheaper per ml?
Most people either guess, pick the one that "feels" like a deal, or spend 30 seconds doing arithmetic on their phone. None of those options are great.
Supermarkets today run hundreds of simultaneous promotions — BOGO, Buy 2 Get 1, percentage discounts, multi-packs, bundle offers. Products come in dozens of sizes. Comparing real value is genuinely hard without a calculator, and that's exactly what DealCheck solves.
Enter the price and quantity, tap Compare — the app calculates the unit price (per ml, per g, or per piece) for every item and ranks them from cheapest to most expensive. Done in under 5 seconds.
Key Features
Auto Unit Price
Calculates per ml, g, or piece — compare any sizes instantly
All Promo Types
BOGO, Buy 2 Get 1, % off, custom — real price calculated automatically
Pack Mode
Enter "6 × 325ml" directly — no pre-calculating needed
Compare Up to 5
Rank up to 5 items from best to worst deal at once
History
Last 10 comparisons saved — no re-entering needed
Works Offline
Install as a PWA and use without internet connection
Our Values
- ✅ Free forever — no accounts, no subscriptions, no hidden fees
- 🔒 Privacy-first — zero personal data tracking; everything stays in your browser's local storage
- ⚡ Lightweight and fast — no frameworks, no bloat; loads instantly even on 3G
- 🌏 Bilingual — Thai and English, switch anytime
- 🚫 No intrusive ads — small banner ads from Google AdSense only; no pop-ups, no overlays
Development Timeline
January 2026 — The Idea
Born from a personal frustration in the supermarket. Wanted a tool that works instantly with no login and no slow loading.
March 2026 — First Version
Launched MVP supporting 2-item comparisons with basic unit price calculation.
April 2026 — Promo Types Added
BOGO, Buy 2 Get 1, percentage off, Pack Mode, and up to 5-item comparisons.
May 2026 — Blog + English Version
Launched a grocery tips blog and full English-language support.
About the Developer
Hi, I'm Nipitphand — an indie developer from Thailand. I like building small tools that solve real everyday problems without unnecessary complexity.
DealCheck started as something I built for myself. I use it every time I go grocery shopping, and I hope it's useful for you too.
Contact & Feedback
📧 Email: nipitphand@gmail.com
Have feedback, found a bug, or want to suggest a feature? Send me an email — I read and reply to every message.
Other Projects
- HuayCheck — Thai, Lao, and Vietnamese lottery checker for Android
- MeeKongMaSong — Thai parcel tracking app for Android