Comparison

Altimeter ∞ Elevation GPS vs nGeneTime

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

Head to head
About

Altimeter ∞ Elevation GPS

This app provides real-time GPS elevation tracking for your current location. It's ideal for outdoor activities, travel, or simply satisfying your curiosity about altitude. The app is designed for simplicity and accuracy, working offline with minimal battery consumption.

Highlights
  • Current altitude display
  • GPS accuracy indicator
  • Clean, easy-to-read interface
  • Offline functionality
  • Minimal battery usage
Features
Read full description

Know your exact elevation, anywhere. Altimeter ∞ shows your real-time GPS altitude in feet or meters with a live accuracy indicator — no signup, no clutter. Built for hikers, climbers, skiers, cyclists, drone pilots, paragliders, and travelers who need a fast, dependable altitude reader. Features: • Live GPS altitude in meters or feet • One-tap unit toggle • GPS accuracy display • Works offline once located • Minimal battery use • Clean, glanceable interface Optional Premium removes ads with a monthly or lifetime in-app purchase. Privacy Policy: https://sites.google.com/view/alti-meter/privacy-policy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

nGeneTime

Features
Read full description

nGeneTime combines three complementary experiences: a kinetic desk clock, a solar-term-based perpetual calendar with Four Pillars (四柱), and line casting for The Book of Change (周易). iPhone • Landscape: A kinetic desk clock with magnetic motion and hourglass-style disappearance effects that visualize the flow of time. • Portrait: A perpetual calendar with lunar dates, day pillars, current Four Pillars, solar-term transitions, date-selectable hour-pillar tables, Zhouyi line casting, and an interactive longitude-to-time globe. Longitude-to-time globe Part 5C presents longitude correction as a visual geographic model. • Rotate, tilt, and zoom the globe. • See the best available location with its latitude and longitude. • Compare the selected time-zone reference meridian with the physical longitude used for correction. • Follow five one-hour longitude guides and their corresponding clock times. • Optionally display simplified civil time-zone boundaries to compare ideal meridians with real-world time zones. Calculation basis On iPhone, nGeneTime offers two calculation modes: • Time-zone applies the selected civil time zone to the complete Four Pillars result. • Longitude-corrected time shifts the calculation reference by the longitude difference from the selected time-zone reference meridian. With valid location data, the corrected time is used for the year, month, day, and hour pillars. Latitude positions the marker on the globe, while longitude determines the clock correction. If usable location data is unavailable, the selected time-zone basis is used. Home Screen widgets Three widgets provide calendar and pillar information: • Calendar: Current month, lunar dates, day pillars, and the applicable solar-term boundary • Four Pillars: Current hour, day, month, and year pillars • Hour Pillars: All twelve hour-pillar intervals, with the current interval highlighted Solar-term-based pillars Year and month pillars do not change at ordinary Gregorian boundaries. • The year pillar changes at the Beginning of Spring (立春), rather than January 1. • The month pillar changes at the applicable monthly solar-term boundary, rather than the first day of the Gregorian month. • The applicable solar term and its local boundary time are displayed in the selected time zone. The Book of Change (周易) Open the full-screen line-casting interface from the portrait calendar and cast one line at a time. Each cast uses the hundredth-second value of the running timer: an odd value creates a whole line, and an even value creates a broken line. Six lines form a set, and multiple sets can be reviewed. This feature focuses on line casting and visual review. It does not reproduce a complete digital edition, translation, commentary, or interpretation of the Zhouyi. Apple Watch The Apple Watch app provides: • Current time and Four Pillars • Solar-term-based year and month pillars • Optional longitude-corrected pillar time when location is available • Monthly calendar with pillar information • Selected-date hour pillars • A timer with immediate-start presets, custom durations from 1 to 180 minutes, progress, and selectable vibration patterns • Circular and corner complications for the current day and hour pillars, with countdown information while the timer is active Privacy Location access is optional and is used only to calculate longitude-corrected pillar time and display the current position on the globe. Precise Core Location coordinates are processed locally. If Core Location is unavailable, the app may request an approximate IP-based location from a network service. No account is required. nGeneTime does not use information for advertising or cross-app tracking.

Screenshots

Altimeter ∞ Elevation GPS3 screens
nGeneTime4 screens

Verdict

The call

The clearest difference is in-app purchases: nGeneTime at none against Altimeter ∞ Elevation GPS's 3. nGeneTime also leads on ads (none vs shown). Altimeter ∞ Elevation GPS's advantage is iOS requirement (17.0 vs 26.0). On price, update cadence 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. Altimeter ∞ Elevation GPS sells 3 in-app purchases, starting at $1.99 per month. nGeneTime asks for nothing beyond the download.

UpkeepUpdate frequency

Altimeter ∞ Elevation GPS ships an update every 11 days, nGeneTime every 10 days. The most recent releases landed on October 17, 2026 and October 15, 2026 respectively.

Scorecard3 real differences · 7 level
Altimeter ∞ Elevation GPS versus nGeneTime: the parameters behind the verdict, then further details
ParameterAltimeter ∞ Elevation GPSnGeneTime
PriceFreeFree
Rating4.6 (984 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings984 — better—
Update frequencyEvery 11 daysEvery 10 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, Apple Watch — better
Requires iOS17.0 — better26.0
Further details — not scored
Size17 MB23 MB
Age rating4+4+
DeveloperFawkes WeiHyunsuk Roh

In-app purchases

3 purchases

Altimeter ∞ Elevation GPS

Subscriptions2
  • Monthly$1.991 Month
  • Yearly$7.991 Year
One-time1
  • Lifetime$7.99
None

nGeneTime

No in-app purchases

Questions

Is Altimeter ∞ Elevation GPS free?
Altimeter ∞ Elevation GPS is free to download, with in-app purchases available.
Is nGeneTime free?
nGeneTime is free to download, with no in-app purchases.
Do Altimeter ∞ Elevation GPS or nGeneTime have ads?
Altimeter ∞ Elevation GPS shows ads; nGeneTime does not.
Which is updated more often, Altimeter ∞ Elevation GPS or nGeneTime?
Altimeter ∞ Elevation GPS ships an update every 11 days, and nGeneTime every 10 days. Most recently, Altimeter ∞ Elevation GPS was updated on October 17, 2026 and nGeneTime on October 15, 2026.

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