GEO vs Datum
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
GEO
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Stamp every photo & video with GPS location, live map, address, coordinates, date and time - automatically. GEO is the all-in-one geotag camera that turns any shot into a clear, professional, location-tagged record. WHAT MAKES GEO DIFFERENT - Real-time time control: Adjust the displayed date and time right in the camera, live, before and while you shoot. Set the exact format and value you need when your device clock is off or you are working across time zones. - Real-time location control: Choose Automatic or Manual. Enter a custom address or GPS coordinates live as you capture, so your stamp stays accurate even when the signal is weak, indoors, or offline. - Stamp old photos too: Forgot to stamp a shot? Add the same GPS + map + date/time watermark to existing photos from your gallery, so your past captures match your live ones. WHAT YOU CAN STAMP - GPS coordinates (DMS or decimal) - Live map: Normal, Satellite, Terrain, Hybrid - Full address: city, state, country - Date and time in many formats (12h/24h) - Altitude, compass and magnetic heading - Weather and temperature (C / F) - Custom notes, logo and signature POWERFUL CAMERA - Photo and video capture up to 4K - Real-time preview of your stamp as you shoot - Adjustable font, size, color, opacity and position - Classic and advanced stamp templates - Grid, timer, flash, front and back camera PERFECT FOR - Construction and site progress proof - Delivery and service confirmation - Real estate and property records - Fieldwork, surveys and agriculture - Travel and adventure memories - Work clock-in and attendance logs WHY CHOOSE GEO - Real-time time and location control: unique to GEO - Works offline: no internet required - Clean, professional, customizable templates - Stamp brand-new captures AND old gallery photos - Fast, simple, and built for everyday use GEO PREMIUM Unlock all templates, remove ads, and access advanced customization with a GEO Premium subscription. - Auto-renewable subscriptions are offered (weekly, monthly, and yearly options). - Payment is charged to your Apple ID at confirmation of purchase. - Your subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. - Your account is charged for renewal within 24 hours prior to the end of the current period. - You can manage or cancel your subscription anytime in your App Store Account Settings after purchase. - Any unused portion of a free trial is forfeited when you purchase a subscription. Privacy Policy: https://firefly-team.com/geo-camera-policy/ Questions or feedback? Email us: elflyhight@gmail.com Download GEO and make every photo and video tell exactly where and when it happened.
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 in-app purchases: GEO at none against Datum's 2. GEO also leads on update cadence (every 2 weeks vs monthly). Datum's advantage is ads (none vs shown) and iOS requirement (15.6 vs 17.0). On price and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Datum sells 2 in-app purchases, starting at $7.99 per 7 days. GEO asks for nothing beyond the download.
GEO ships an update every 2 weeks, Datum monthly. The most recent releases landed on October 20, 2026 and October 15, 2026 respectively.
| Parameter | GEO | Datum |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks โ better | Monthly |
| Ads | Yes | No โ better |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.0 | 15.6 โ better |
| Further details โ not scored | ||
| Size | 28 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | Quang Doan | Anthonin Cocagne |
In-app purchases
GEO
No in-app purchases
Datum
- Weekly Premium3 Days trial$7.997 Days
- Annual Premium$34.991 Year









