LRTK vs Spots LM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LRTK
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Easily Handle High-Accuracy Survey Data on Your Smartphone This is the dedicated app for the "LRTK" centimeter-level GNSS device (*1). By connecting to the LRTK receiver and configuring Network RTK (NtripClient), you can achieve centimeter-level positioning accuracy. Through integration with the LRTK Cloud (*2), captured location data can be instantly synced and viewed via a web browser. Key Features & Use Cases: • Easy access to high-accuracy surveying. • Instantly share field survey data with office PCs. • Manage location data alongside site photos. • Easily acquire point cloud data. Note on Altitude Calculation: To obtain JGD2011 (Japan Geodetic Datum 2011) altitude, this app utilizes the calculation API provided by the Geospatial Information Authority of Japan (*3). (*1) https://www.lefixea.com/lrtk (*2) https://lconstruction.lefixea.jp/ (*3) https://vldb.gsi.go.jp/sokuchi/surveycalc/api_help.html
Spots LM
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This application is a location management application that allows you to save and stock your current location. You can use favorite filtering, tags, and string search to find the desired location when you open the app and launch an external map app. In addition, it also supports location saving from AppleWatch, so you can quickly save your current location from your AppleWatch. Please make use of this app as a reminder of places you want to remember, such as for travel or business, as well as for small location memos.
Screenshots
Verdict
The clearest difference is ads: LRTK at none against Spots LM's shown. On price, update cadence, 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. Neither carries in-app purchases, so what you see is what you pay.
LRTK ships an update weekly, Spots LM every 6 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | LRTK | Spots LM |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly | Every 6 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad, Apple Watch — better |
| Requires iOS | 17.0 — better | 18.2 |
| Further details — not scored | ||
| Size | 875 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | レフィクシア株式会社 | Shingo Kawaguchi |
In-app purchases
LRTK
No in-app purchases
Spots LM
No in-app purchases








