LabStretch2 vs Lokmi
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LabStretch2
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LabStretch2 is a real-time image enhancement app, designed specifically for rock art researches to use in the field. Images can be acquired from within the app, or loaded from the iPad photo library. They can then be enhanced to see very faint color differences. Unlike the iPad version, LabStretch2 uses 2 screens, Settings and Image. The image thumbnail is also a Run button. For a description of the method, please see http://www.rupestrian.com/labstretch.html Usage Notes 1. Images are acquired by Capture Image, which takes a photo from within the app, or Import Image, which selects a photo from the camera roll. If you want to keep the image, use the camera and import the image from the camera roll. 2. Click Run. The image is downsampled and converted to Lab color space. The initial spread is applied. Try OffsetToggle to apply an estimated centering of the histogram before the multiplier (spread) is applied. Select the best toggle and then adjust the sliders. Run after each change. If the enhanced image is almost all one color, work with the offsets. 3. You can use the iPad screen capture to save results. 4. Use Save to capture the full-size enhanced to the camera roll. This requires considerable calculations and, depending upon your CPU speed, can take a minute or more. For assistance, please contact rockart@infomagic.net.
Lokmi
Capture photos and videos with essential job site information automatically stamped on them. Add date, time, GPS location, address, and notes directly to your media. Generate professional PDF reports and organize your work with unlimited folders.
- Automatic date, time, and GPS stamping
- Street address and map overlay
- Customizable stamp styles
- PDF report generation
- Unlimited job/site folders
- Stamped video recording
- Before and after photo comparison
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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.
Screenshots
Verdict
The clearest difference is in-app purchases: LabStretch2 at none against Lokmi's 1. LabStretch2 also leads on iOS requirement (9.1 vs 16.0). Lokmi's advantage is update cadence (every 5 days vs every 55 months). On price, ads 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. Lokmi sells 1 one-off in-app purchase. LabStretch2 asks for nothing beyond the download.
LabStretch2 ships an update every 55 months, Lokmi every 5 days. The most recent releases landed on November 11, 2026 and November 6, 2026 respectively.
| Parameter | LabStretch2 | Lokmi |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 55 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 9.1 — better | 16.0 |
| Further details — not scored | ||
| Size | 14 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | Robert Mark | Mohamed Bziyar |
In-app purchases
LabStretch2
No in-app purchases
Lokmi
- Lokmi Pro$19.99









