About
About Stampzy
Last updated 11 October 2026
Stampzy is an iPhone app that stamps the date, time, GPS coordinates and the new-structure Vietnamese address onto photos and videos the moment you take them, made by Đào Văn Thương, an independent developer in Vietnam. It works offline, computes the commune and province of Vietnam's post-1 July 2025 structure (34 provinces, no district) on the phone, and comes with templates, attendance timesheets and daily photo reports for field work such as construction, delivery and customer visits. There is no account, and no server of the developer's receives photos or locations.
Key facts
- Name
- Stampzy (App Store name: “Stampzy: Timestamp GPS Camera”; in Vietnamese “Stampzy: Camera Ngày Giờ GPS”)
- Category
- Photo & Video — timestamp and GPS camera for work photos
- Made by
- Đào Văn Thương (Dao Van Thuong), independent developer, Vietnam
- Platform
- iPhone with iOS 17 or later. No Android or web version.
- Languages
- The app is available in Vietnamese, English, Chinese (Simplified), Japanese, Korean, French, German, Spanish, Italian and Portuguese (Brazil). This site is in Vietnamese and English.
- Where it runs
- On the iPhone. Capture, stamping, the commune/province address (from bundled boundary data for 34 provinces and 3,321 communes and wards), reports and timesheets are made on the device and work offline. Online, Apple’s map service may add the street and house number.
- Where data lives
- Photos, videos, stamps and reports are stored on the iPhone (and, if you allow it, added to the Photos app). They leave the device only when you share them. There is no account.
- Analytics
- Anonymous usage statistics (Google Analytics for Firebase) and crash reports (Firebase Crashlytics) are always on; there is no in-app switch. They never include photos, coordinates, addresses or anything typed.
- Main features
- Live stamp on the viewfinder; time, date, lunar date, coordinates, altitude and address; “Verified time” checked against network time; 12 work templates; attendance check-in/out with a monthly timesheet (Excel/PDF); projects; daily photo report as an image or A4 PDF; before/after photos; batch stamping of existing photos; templates shared by link or QR; a “Scan for location” QR; video with a running clock.
- Pricing model
- Free with unlimited photos and 3 templates. Stampzy Pro is a monthly or yearly subscription (the yearly plan has a free trial) or a one-time lifetime purchase. The App Store shows the price for each region.
- App Store
- Coming soon — not downloadable yet. (App Store ID 6816862109)
Who made Stampzy
Stampzy is made by Đào Văn Thương (Dao Van Thuong), an independent iOS developer in Vietnam. There is no company or investor behind it. He designs, builds and supports the app himself, and support email goes to him directly.
He also makes the iPhone apps Lockboxy, Minivid, Linkeeper, Ringsy, Talkzy, Baton and Hearnote.
PortfolioAll appsOn the App StoreGitHub
Other apps by the same developer
Why Stampzy exists
People who work in the field in Vietnam — site engineers, sales reps, delivery riders, inspectors, office staff on the road — send photos with the time and place on them every day to show where they were and when.
Since 1 July 2025 Vietnam has 34 provinces and no district level, but many timestamp cameras still print the old names. Stampzy ships the new boundaries and works out the commune and province on the phone, even without a signal.
It is also built to be honest: the stamp says “Verified time” only when the clock was actually checked, the photo code is described as a consistency code rather than proof, and there is no weekly plan.
Privacy in short
- No account, and no server of the developer's receives photos, videos or locations.
- No ad SDK, no advertising ID, no tracking across apps.
- Anonymous usage statistics and crash reports (Firebase) are always on and contain no photos, places or text.
- Purchases go through Apple and RevenueCat with an anonymous ID.
- Feedback is sent only if you write it and tap Send.
Contact
Questions, press or feedback. The developer answers personally.
Questions about Stampzy
What is Stampzy?
Stampzy is an iPhone app that stamps the date, time, GPS coordinates and the new-structure Vietnamese address onto photos and videos the moment you take them, made by Đào Văn Thương, an independent developer in Vietnam.
What does Stampzy do?
Stampzy stamps the date, time, GPS coordinates and the new-structure Vietnamese address onto photos and videos the moment you take them. It works offline, computes the commune and province of Vietnam's post-1 July 2025 structure (34 provinces, no district) on the phone, and comes with templates, attendance timesheets and daily photo reports for field work such as construction, delivery and customer visits.
Who made Stampzy?
Stampzy is made by Đào Văn Thương (Dao Van Thuong), an independent iOS developer in Vietnam. There is no company or investor behind it.
Does Stampzy upload my photos?
No. Photos, videos and reports are made and stored on the iPhone and leave it only when you share them. The app sends anonymous usage statistics and crash reports, which never include photos, locations or text.
Does Stampzy work without a connection?
Yes. Capture, stamping, coordinates and the commune/province address work offline. Without a connection there is no house number or street.
How much does Stampzy cost?
Unlimited photos are free, with 3 templates. Stampzy Pro adds video, logo, the photo code and the other templates, as a monthly or yearly subscription or a one-time lifetime purchase. The App Store shows the price for your region.