# Altim-O-Tron — The offline altimeter HUD > Offline altimeter and HUD using GPS and barometer for accurate altitude readings. (iPhone/iPad app by Benjamin Robert Long.) - Source: https://appshunter.io/ios/app/altim-o-tron/id6794895524 (this page in markdown: same URL + `.md`) - Developer: [Benjamin Robert Long](https://appshunter.io/developer/1702347982) - Category: Navigation, Weather - Price: Free - Rating: 5.00/5 from 4 App Store ratings · 3 written reviews indexed - Age rating: 4+ - Requires: iOS 17.6 · 5 MB - Languages: American English - Released: 2026-08-13 - Data updated: 2026-10-08 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/altim-o-tron/id6794895524/reviews.md ## What is Altim? ALTIM-O-TRON is a precision altimeter that works when nothing else does: no cell service, no Wi-Fi, no problem. It reads GPS satellites and your iPhone's barometer directly, fusing them into a smooth, accurate altitude readout wrapped in a glowing instrument panel. KNOW YOUR ALTITUDE • GPS + barometer fusion: absolute accuracy with instant response • Vertical speed, pressure altitude, and precise coordinates • Live elevation profile of your session MEASURE IT YOUR WAY Feet and meters, obviously. But also the international standards of fathoms, furlongs, smoots, and giraffes. Choose wisely. ALTITUDE INTEL A built-in database of 300+ things lets you see your altitude in real-world terms. A number is useful, but it's much more interesting to know that you're at the same height as the tip of the Eiffel Tower, Machu Picchu, a bar-headed goose crossing the Himalaya, or the world's highest ATM (fees apply) — and the intel updates as you climb. TRUE COMPASS Includes a proper compass rose with true north computed entirely on-device, plus course and ground speed. Yes, speed can be displayed in furlongs per fortnight. You're welcome. RECORD YOUR CLIMBS The session recorder captures your elevation profile with total ascent and descent — and keeps recording with your screen locked and the phone in your pocket. Export any session as a standard GPX track for your favorite mapping apps. Use it to geotag photos with the Geotag-O-Tron sister app! READ THE SKY The offline barograph logs sea-level-corrected pressure and reads the three-hour tendency. Track the weather like the sailors of old (they didn't have smartphones of course, so they had to use flip phones or Treos or something). Pressure falling fast? Maybe start heading down. ABSOLUTELY NO NETWORK Altim-O-Tron contains zero networking code. Nothing is collected, nothing is transmitted, nothing phones home. Your location never leaves your device. It works on a summit, in a slot canyon, in airplane mode, and at the bottom of Death Valley (there's altitude intel for that too). No accounts. No ads. No tracking. No masters. ## Key features - GPS and barometer fusion for accuracy - Offline functionality - Live elevation profile - Altitude intel database - True north compass - Session recording and GPX export - Offline barograph for weather tracking ## Recent user reviews (3 of 3) All indexed reviews: https://appshunter.io/ios/app/altim-o-tron/id6794895524/reviews.md ### 5/5 — Gadsmoots, I love this app *2026-09-07* I’m an American, so obviously I’m not about to embrace the metric system. But smoots? Hell yes. This is a delightful app. ### 5/5 — Love that it's offline! *2026-08-19* Insanely accurate and completely offline. I love the sense of humor built in as well! ### 5/5 — Fantastic app! *2026-08-19* So great to have an app that just works without being connected to a network. No passwords and usernames. Just raw functionality! Also knowing your elevation in “giraffes” is just fun. ## Frequently asked questions about Altim ### Does Altim-O-Tron work without cell service or Wi-Fi? Yes, Altim-O-Tron is designed to work entirely offline. It reads GPS satellites and your iPhone's barometer directly, ensuring accurate altitude readings even when no network connection is available. ### What units of measurement does Altim-O-Tron support? Altim-O-Tron supports standard units like feet and meters, as well as less common international standards such as fathoms, furlongs, smoots, and giraffes for a unique measurement experience. ### How does Altim-O-Tron compare altitude to real-world objects? The app features an 'Altitude Intel' database with over 300 items. It allows you to see your current altitude in relation to famous landmarks, natural formations, and even animals, updating this information as you ascend. ### Can Altim-O-Tron record my climbs? Yes, the session recorder captures your elevation profile, total ascent, and descent. It continues recording even with your screen locked and phone in your pocket, and sessions can be exported as GPX tracks. ### Does Altim-O-Tron have ads? No, Altim-O-Tron is completely ad-free. The developers have stated there are no ads, no tracking, and no networking code, ensuring a private and uninterrupted user experience. ### What is the age rating for Altim-O-Tron? Altim-O-Tron has an age rating of 4+. This indicates it is suitable for young children and does not contain content that would be considered inappropriate for this age group. ### Is Altim-O-Tron available on Android devices? Currently, Altim-O-Tron is only supported on iPhone devices. The provided data specifies 'iphone' under supportedDevices, indicating it is not yet available for Android users. ### How often is Altim-O-Tron updated? Altim-O-Tron was last updated on August 13, 2026, with version 1.0. This indicates it is a new release, and future updates will likely depend on user feedback and ongoing development. ## Version history (last 1 release) ### 1.0 — 2026-08-13 No release notes. ## More apps by Benjamin Robert Long - [Track-O-Tron](https://appshunter.io/ios/app/track-o-tron/id6798866074) All apps by Benjamin Robert Long: https://appshunter.io/developer/1702347982 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-08.*