Comparison

Lambert vs Volteec

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

Head to head
About

Lambert

This application transforms your iPhone into a specialized geological compass. It accurately measures the dip direction and angle of geological strata, displaying real-time orientation data. Measurements can be enhanced with text and plotted on a map for easy transfer to your computer.

Highlights
  • Geological compass functionality
  • Measure dip direction and angle
  • Real-time stereographic projection
  • Wulff and Schmidt Net projection diagrams
  • Add text to measurements
  • Plot measurement localities on a map
  • Transfer data to computer
Features
Read full description

This app turns your iPhone into a geological compass, a tool for each geologist. It can be used to measure the direction of dip and the angle of dip of geological strata. The app shows the current device orientation in a realtime stereographic projection. The data can be previewed in projection diagrams (Wulff and Schmidt Net) and transferred to your computer. You can add text to the measurements and plot the measurement localities on a map.

About

Volteec

Features
Read full description

Advanced UPS monitoring for self-hosted environments. Requires a backend server (NUT or Volteec Backend). Volteec is a private, read-only UPS status viewer for iPhone and iPad, designed for homelab and self-hosted setups. Connect the app to your own monitoring backend to see: • UPS status (Online / On Battery / Offline) • Battery percentage and runtime (when available) • Load and voltage details (when available) • Real-time updates Optional push alerts are available via Relay for critical status changes. Note: Push alerts require your monitoring server to be reachable from the internet over HTTPS. If the server is offline or only accessible locally, notifications won’t be delivered. No Volteec account is required by default. The app does not collect personal data.

Screenshots

Lambert4 screens
Volteec4 screens

Verdict

The call

The clearest difference is update cadence: Volteec at every 3 weeks against Lambert's every 5 months. Lambert's advantage is iOS requirement (16.6 vs 26.2). 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

Lambert ships an update every 5 months, Volteec every 3 weeks. The most recent releases landed on June 1, 2026 and September 12, 2026 respectively.

Scorecard2 real differences · 8 level
Lambert versus Volteec: the parameters behind the verdict, then further details
ParameterLambertVolteec
PriceFreeFree
Rating5.0 (4 ratings) — better—
Positive reviews75.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 5 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.6 — better26.2
Further details — not scored
Size2 MB6 MB
Age rating4+4+
DeveloperPeter AppelTEODOR DRAGAN

In-app purchases

None

Lambert

No in-app purchases

None

Volteec

No in-app purchases

Questions

Is Lambert free?
Lambert is free to download, with no in-app purchases.
Is Volteec free?
Volteec is free to download, with no in-app purchases.
Do Lambert or Volteec have ads?
Neither Lambert nor Volteec shows ads.
Which is updated more often, Lambert or Volteec?
Lambert ships an update every 5 months, and Volteec every 3 weeks. Most recently, Lambert was updated on June 1, 2026 and Volteec on September 12, 2026.

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