Comparison

Subsurface Maps Offline vs Sewerlink

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Subsurface Maps Offline

Access and edit your maps offline on your iOS device. Download maps from the cloud, make changes, and mark new points. Sync your edits back to the cloud for team access.

Highlights
  • Download maps for offline use
  • View and edit map features
  • Mark new points
  • Sync changes to the cloud
  • Turn map layers on/off
Read full description

Subsurface Maps Offline is an app that allows existing Subsurface Maps users to download their maps from the cloud to their iOS device for use offline. Using this app you can view your map, turn layers on and off, make changes to any feature, and mark new points. Then when you are back at the office you can use the "Sync" button to upload your changes to the Subsurface Maps cloud where they will be accessible to the rest of your team. The regular browser-based Subsurface Maps application is still the flagship product where you must go to create layers, change colors, modify your field layout, draw lines, etc. The offline app is a less functional version that allows you to do basic data collection and viewing offline. How it works 1. These instructions assume you already have a Subsurface Maps account. 2. Install this app on your tablet or phone. 3. Run the app and enter your Subsurface Maps user name and password. 4. Select which map(s) you want to download to your phone/tablet. 5. Open your map, view it, make changes, add new points, etc. 6. When you are ready to upload your changes click Menu, then click Offline Maps, then click the 'Sync' button next to your map name. This will upload your edits and download any changes that others have made.

About

Sewerlink

Features
Read full description

Integrates seamlessly with JetScan, QuickView AirHD, and DrainStreer inspection camera systems, enabling efficient capture, synchronization, and management of inspection videos and data. Streamline sewer and drainage inspections, improve reporting accuracy, and access all inspection records from a single platform.

Screenshots

Subsurface Maps Offline3 screens
Sewerlink1 screens

Verdict

The call

The clearest difference is update cadence: Subsurface Maps Offline at every 4 weeks against Sewerlink's every 7 months. 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Subsurface Maps Offline ships an update every 4 weeks, Sewerlink every 7 months. The most recent releases landed on September 16, 2026 and September 5, 2026 respectively.

Scorecard1 real difference · 8 level
Subsurface Maps Offline versus Sewerlink: the parameters behind the verdict, then further details
ParameterSubsurface Maps OfflineSewerlink
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 4 weeks — betterEvery 7 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.014.6 — better
Further details — not scored
Size81 MB64 MB
Age rating4+4+
DeveloperBen HillWinCan

In-app purchases

None

Subsurface Maps Offline

No in-app purchases

None

Sewerlink

No in-app purchases

Questions

Is Subsurface Maps Offline free?
Subsurface Maps Offline is free to download, with no in-app purchases.
Is Sewerlink free?
Sewerlink is free to download, with no in-app purchases.
Do Subsurface Maps Offline or Sewerlink have ads?
Neither Subsurface Maps Offline nor Sewerlink shows ads.
Which is updated more often, Subsurface Maps Offline or Sewerlink?
Subsurface Maps Offline ships an update every 4 weeks, and Sewerlink every 7 months. Most recently, Subsurface Maps Offline was updated on September 16, 2026 and Sewerlink on September 5, 2026.

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