Timestamp Camera vs Datum
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Timestamp Camera
This app transforms your phone into a GPS field camera, stamping photos with location, date, and time. Generate PDF reports and work offline, ensuring proof for professional use. Your photos remain private on your device.
- GPS coordinates and address stamping
- Live stamp preview
- Map on photo
- One-tap PDF reports
- Offline functionality
- Customizable company logo and name (Pro)
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Lokmi is a timestamp camera for work. It puts the date, time, GPS location, street address and a small map on your photos and videos, the moment you take them. No ads. No account. No subscription. Pro is one payment, yours for life. WHY LOKMI - No ads, ever. Nothing pops up between your photos. - No subscription. The camera, the stamp, video, folders and PDF reports are free. Pro is one payment. - Opens straight on the camera. No sign-up, no setup. - See the stamp before you shoot. What you see is what you get. - Wrong address? Fix it after the shot. Pick a nearby address or type your own. - No signal? The date, time and GPS point are still saved. The address is added when you are back online. - The stamp is part of the image. It stays when you send the photo by text, WhatsApp or email. WHAT GOES ON THE PHOTO - Date and time, with time zone, in 12- or 24-hour time - GPS coordinates, in decimal or degrees - Street address - Small map with a pin - Your notes: type them, or say them and Lokmi writes them - Your company name and logo (Pro) You choose what to show. Three stamp styles, all free: Bottom Bar, Corner Card or Full Panel. BUILT FOR THE JOB SITE - PDF reports: turn a day of photos into a clean report for your client or boss. - Folders by job or site. Free and unlimited. - Before and after: two photos side by side in one image. - Stamped video with sound. - Sharp photos, with ultra-wide, wide and telephoto lenses (on phones that have them). - Print-safe stamp: it stays away from the edges, so it is not cut when you crop or print. - Optional: copy every new photo to your phone gallery. WHO USES LOKMI Contractors and construction crews • Roofing, HVAC and plumbing • Site inspections • Property managers and real estate • Insurance claims and adjusters • Delivery and installation proof • Surveying and field research • Landscaping and cleaning Send the client a photo that shows the job is done. Add a PDF report to your invoice. Keep a clean record of every site visit, with the date, time and place on every shot. LOKMI PRO: PAY ONCE, KEEP IT FOREVER - Your company name and logo on every photo and report - Reports with no photo limit (a free report holds up to 10 photos) and without the "Made with Lokmi" line - Client signatures on reports - Draw on photos: arrows, boxes and text - Stamp many gallery photos at once - Industry templates for 8 trades - Photo map: see all your photos on one map - Export to CSV, KMZ or Shapefile - Backup to your own Google Drive - Network time and integrity check: see if a photo is unchanged since capture One payment. No subscription. No ads. Ever. YOUR PHOTOS STAY YOURS Lokmi has no account and no cloud of its own. Your photos stay on your phone. To find the address and draw the map, Lokmi sends the GPS point, never the photo. Backup is off until you turn it on, and it goes to your own Google Drive. Questions or ideas? Tap "Get help" in the app. You talk to the developer, not a bot.
Datum
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Proof of when and where, stamped on every photo. Datum is a timestamp and GPS camera for people who document work. Every shot is stamped with the time, the date and time zone, the street address, the GPS coordinates, the accuracy of the fix and the compass heading, all measured at the moment the shutter fired. WHAT GETS STAMPED - Time, date and time zone, so a photo still reads correctly wherever it was taken. - Street address, geocoded from your location at capture. - Latitude and longitude, with GPS accuracy in meters and the compass heading. This is the line that separates a nice photo from a photo that answers questions. - Your company name and logo, set once (Pro). MEASURED IS LOCKED, AUTHORED IS YOURS The time, the coordinates, the accuracy and the heading are measured by your iPhone, and the app gives you no way to edit them. What you write, the label on the stamp and the note on a photo, stays yours to change at any time. Datum records what the device measured and will not let you move it. It does no network verification and claims no legal certification. THE STAMP IS NEVER BURNED IN Your original photo is kept exactly as the sensor wrote it. The stamp is composed on top at the moment the photo is shown, shared or exported. That is what lets you reposition it, restyle it, or apply a new look to an entire job weeks after the visit, without ever altering the original file. BUILT FOR SPEED ON SITE - Volume buttons fire the shutter, so it works with gloves on. - Camera Control support on iPhone 16 and later. - No review screen after a shot. Frame, fire, keep moving. - An honest GPS accuracy chip, green, amber or red, so you know what the fix is worth before you rely on it. - A high-contrast dark interface that stays readable in direct sun. JOBS AND PDF REPORTS Photos group into jobs, one visit to one site. A job names itself from the date and the street it started on. When you are done, export the whole job as a PDF report with the photos, your labels and notes, and a map page showing where each shot was taken. Send it before you leave the site. WE NEVER READ YOUR PHOTO LIBRARY Datum never asks for access to your photos. To bring an existing picture into a job you use the system picker, which hands over only the image you chose. The app sees nothing else. Imported photos are marked as imported in the report, and when a file carries no location we show the date alone rather than invent a position. WORKS WHERE THE SIGNAL DOES NOT No account, no sign-in, no server. Everything stays on your iPhone. If an address cannot be looked up on site, Datum falls back to the last known address, then to raw coordinates. The shot is never blocked and never delayed. FREE AND PRO Free: unlimited stamped photos, one active job, the Proof stamp theme, notes and imports, and one watermarked PDF export. Pro: unlimited jobs, all three stamp themes, unlimited PDF reports with no watermark, and your company logo on every photo. WHO IT IS FOR Plumbers, electricians, HVAC and roofing crews, property inspectors, insurance adjusters, surveyors, delivery drivers, landlords running move-in and move-out. Anyone who has ever needed to show when and where a photo was taken. Privacy Policy: https://anthopak.dev/datum/privacy-policy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: Timestamp Camera at every 5 days against Datum's monthly. On price, ads, in-app purchases and device support 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
Both are free to download. Timestamp Camera sells 1 one-off in-app purchase and Datum sells 2 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Timestamp Camera ships an update every 5 days, Datum monthly. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.
| Parameter | Timestamp Camera | Datum |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 5 days — better | Monthly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 35 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | Mohamed Bziyar | Anthonin Cocagne |
In-app purchases
Timestamp Camera
- Lokmi Pro$19.99
Datum
- Weekly Premium3 Days trial$7.997 Days
- Annual Premium$34.991 Year









