# Liang Dongjing

> Liang Dongjing (梁东景, "ldjing") is an independent iOS developer and photographer based in China. He has published 14 iPhone apps on the App Store since 2021. This is his personal site.

## About
- Name: Liang Dongjing (梁东景); online handle: ldjing
- Role: Independent iOS developer and photographer
- Based in: China
- X: https://x.com/ldjing
- GitHub: https://github.com/ldjing
- App Store developer page: https://apps.apple.com/us/developer/id1573102134

## Featured apps
- [Cirqify](https://ldjing.com/apps/cirqify/): Circle a hazard in a jobsite photo and get a corrective-action report. Highlights: Brand new; Built on years of site management. Website: https://cirqify.com. App Store: https://apps.apple.com/us/app/safety-inspection-cirqify/id6818529589
- [Daoly](https://ldjing.com/apps/daoly/): BaZi birth charts, daily five-element energy and the I Ching. Highlights: From the East; BaZi · I Ching · Five elements. Website: https://daoly.app. App Store: https://apps.apple.com/us/app/daoly-ask-the-unwritten/id6768331415
- [Contura](https://ldjing.com/apps/contura/): Turns the measurements you log into private 3D body snapshots. Highlights: 4.5 ★ on the App Store; No photos needed. Website: https://getcontura.com. App Store: https://apps.apple.com/us/app/body-measurement-tracker-3d/id6749202389
- [SockDiary](https://ldjing.com/apps/sockdiary/): A sock collection organizer and outfit tracker for sock people. Highlights: 60K views on one Douyin video; Diary in progress. Website: https://sockdiary.com. App Store: https://apps.apple.com/us/app/sockdiary-sock-collection/id6794226358. Follow: https://x.com/sockdiary_jp

## All apps
- [Cirqify](https://ldjing.com/apps/cirqify/) (Business, since 2026): Circle a hazard in a jobsite photo and get a corrective-action report.
- [Daoly](https://ldjing.com/apps/daoly/) (Lifestyle, since 2026): BaZi birth charts, daily five-element energy and the I Ching.
- [Contura](https://ldjing.com/apps/contura/) (Health & Fitness, since 2025): Turns the measurements you log into private 3D body snapshots.
- [SockDiary](https://ldjing.com/apps/sockdiary/) (Lifestyle, since 2026): A sock collection organizer and outfit tracker for sock people.
- [FitEdit](https://ldjing.com/apps/fitedit/) (Health & Fitness, since 2026): Repair a workout when the watch died, the timer ran on, or you forgot to start.
- [undervoice](https://ldjing.com/apps/undervoice/) (Productivity, since 2026): Speak softly into your iPhone; the text lands at your Mac’s cursor.
- [UseUp](https://ldjing.com/apps/useup/) (Food & Drink, since 2026): Scan food packages on-device and see what to use up first.
- [GemStep](https://ldjing.com/apps/gemstep/) (Health & Fitness, since 2026): A step counter that grows a one-of-a-kind 3D crystal.
- [BuzzCam](https://ldjing.com/apps/buzzcam/) (Photo & Video, since 2026): A ProRAW burst camera and self-timer for solo shooters.
- [JustPad](https://ldjing.com/apps/justpad/) (Productivity, since 2025): One endless page for brain dumps. No folders, no titles.
- [MemoryLens](https://ldjing.com/apps/memorylens/) (Photo & Video, since 2025): Overlay an old photo on the live camera to recreate the shot.
- [BallDecide](https://ldjing.com/apps/balldecide/) (Lifestyle, since 2025): A Magic 8 Ball with a Home Screen widget and haptics.
- [SaltTrack](https://ldjing.com/apps/salttrack/) (Health & Fitness, since 2025): Track daily salt intake against the WHO’s 5 g guideline.
- [TeaTeaAvatar](https://ldjing.com/apps/teateaavatar/) (Utilities, since 2021): Gradient and emoji avatars that tell your group chats apart.

## FAQ
### Who is Liang Dongjing?
Liang Dongjing (梁东景), known online as ldjing, is an independent iOS developer and photographer based in China. He has published 14 iPhone apps on the App Store since 2021.

### What apps has Liang Dongjing made?
Cirqify, Daoly, Contura, SockDiary, FitEdit, undervoice, UseUp, GemStep, BuzzCam, JustPad, MemoryLens, BallDecide, SaltTrack and TeaTeaAvatar. Each one is listed on this page with a link to its website or App Store listing.

### What is his newest app?
Cirqify, released on the App Store in October 2026. Circle a hazard in a jobsite photo and get a corrective-action report. He built it on his own years of construction site management.

### Which of his apps are the best known?
Contura, a 3D body measurement tracker, holds a 4.5-star App Store rating: it shows people how their shape changes even when their weight and BMI do not. SockDiary took off on Douyin, where a single video passed 60,000 views, and its sock diary continues on X at @sockdiary_jp.

### Are his apps free?
Cirqify, Daoly, Contura, SockDiary, FitEdit, undervoice, UseUp, GemStep, BallDecide and TeaTeaAvatar are free to download. BuzzCam ($4.99), JustPad ($19.99), MemoryLens ($5.99) and SaltTrack ($4.99) are paid apps, at US App Store prices.

### How can I contact Liang Dongjing?
The fastest way is X, at @ldjing. His code is on GitHub as ldjing.

## Optional
- [Full app descriptions](https://ldjing.com/llms-full.txt)
- [SockDiary privacy policy](https://ldjing.com/sockdiary/privacy/)
- [SockDiary support](https://ldjing.com/sockdiary/support/)
- [FitEdit privacy policy](https://ldjing.com/fitedit/privacy/)
- [FitEdit support](https://ldjing.com/fitedit/support/)