RoomTrace 3D vs Annidiem
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RoomTrace 3D
Transform your real-world rooms into explorable 3D spaces with simple room scanning. This app identifies walls, doors, windows, and furniture, allowing you to view, rotate, and export your creations in various formats. It prioritizes user privacy with on-device processing and no tracking.
- Simple room scanning with on-screen prompts
- Automatic identification of walls, doors, windows, and furniture
- 3D viewing with rotation and zoom
- On-device processing for privacy
- Export to USDZ and OBJ formats
- No account, ads, or tracking
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Turn a real room into a 3D space you can inspect, save, and share by following simple on-screen guidance. RoomTrace 3D is designed for people who want an easier way to scan indoor spaces. There are no complex settings to learn. Turn on the lights, walk slowly around the room, and follow prompts for distance, movement speed, and lighting while the app recognizes walls, openings, and common furniture. GUIDED SCANNING • A short three-step preparation guide • Live prompts for distance, speed, and lighting • Visible counts for recognized walls and objects 3D VIEWING • Rotate and zoom the space as soon as scanning finishes • Review walls, doors, windows, and recognized objects • Keep recent scans saved locally on your device FLEXIBLE EXPORT • Export USDZ for Apple devices and AR viewing • Export an OBJ material package for tools such as Blender and CAD • Save or send files through the system share sheet PRIVACY FIRST Scanning and 3D processing happen on your device. No account, no advertising, no tracking, and no personal data collection. Requires a LiDAR-equipped iPhone or iPad running iOS 17 or later. Mirrors, glass, and very dark glossy surfaces can reduce scan accuracy.
Annidiem
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Your calendar manages your schedule. Annidiem remembers the days for you. If you think you're a bit ahead of the curve, this one's for you. Birthdays, weddings, exams, trips, the day your baby arrived, the day you moved in — the days that matter deserve better than a crowded calendar. Some are still ahead of you. Some already happened. Either way, they deserve somewhere to stay. Flip the bottom-right corner of a card and it turns over into that day's own record. You don't have to wait for the day itself — write while you're looking forward to it, while you miss it, or the moment it crosses your mind: photos, thoughts, voice memos, short videos, each one stamped with the place and weather of that moment. No folders to create, no "where should this photo go" — it belongs to a day, so it stays with that day. If you remember which day it was, you'll find it again. And when the same day comes round again, every year keeps its own: this year never mixes with last. When a day is no longer in focus, put it away — not throw it out. It leaves your home screen and stops reminding you, while the diary and photos stay, ready to bring back. Life gets simpler. The memories don't have to. - TALK TO THIS DAY — flip a card over for that day's own record; write whenever it comes to you - ARCHIVE — put days that no longer need your attention away, without deleting anything - CARD WALL — big countdown numbers for every day that matters - TICKING MOMENTS — live days/hours/minutes/seconds; past days keep counting up: 1000 days together, 90 days smoke-free, day 300 of the project - WEEK & DAY OF YEAR — which week and day of the year today is, at a glance - PHOTO COVERS — pick a photo for a date and the card becomes its face - ON THIS DAY — the days that happened on today's date in past years surface on their own - DYNAMIC ISLAND — pin any day to your Dynamic Island - WIDGETS — gradient cards, Lock Screen widgets, and a large widget that shows your next five days - ERA OF DAYS — one 3D timeline for all your days: days with photos stand along the road, tap one to fly in - APPLE WATCH SYNC — a glance at your wrist: watch app and watch face complications, updated from your iPhone - TAKE A BREATHER — the screen dims, and the fireworks begin - WORTH SHARING — five share card styles: gradient, minimal, poster, midnight, photo - ANY RHYTHM — daily, weekly, monthly, or an interval you set yourself; paydays and bill days stay in step - FIND ANY DAY — search titles, notes, even "August"; filter to this month, the next 30 days, or what's already past - ASK SIRI — "how many days until New Year?" works, and so do Shortcuts and system search - REMINDERS YOUR WAY — the day itself, or 1/3/7/14/30 days ahead, at a time you choose - TYPE DAYS, GET DATES — enter "100 days" and the date computes itself - FACE ID LOCK — auto-lock in background; some days are yours alone - CALENDAR BRIDGE — import from system Calendar; export .ics/JSON to iCloud Drive - ICLOUD SYNC — sign in to iCloud and every device stays in sync - DATE CALCULATOR — days from birth to today, or today to payday; days between dates, business days, and more - ON-DEVICE AI BLESSINGS — Apple Intelligence writes personalized blessings, fully offline (iPhone 15 Pro or later) One-time purchase · No subscription · No ads · Collects no data — your data stays on your device and in your own private iCloud database, and everything works offline.
Screenshots
Verdict
The clearest difference is price: Annidiem at Free against RoomTrace 3D's $2.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Annidiem is free to download; RoomTrace 3D costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | RoomTrace 3D | Annidiem |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | — | Weekly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad | iPhone, iPad, Apple Watch — better |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 2 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | 鑫 宋 | Haiguang Yin |
In-app purchases
RoomTrace 3D
No in-app purchases
Annidiem
No in-app purchases







