Comparison

Altimeter vs SmsLLM

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

Head to head
About

Altimeter

Features
Read full description

See exactly how high you are. AltiMeter reads your live altitude, barometric pressure and oxygen level straight from your iPhone's built-in barometer and GPS — an instant, accurate elevation gauge in your pocket. Most altitude apps stop at a single number. AltiMeter turns your phone into a full climb companion: record a hike or ascent, watch your gain and peak build in real time, then review the elevation profile of every trip. And because the barometric sensor needs no signal, your altitude keeps reading even deep in the backcountry with no cell service. WHAT YOU GET - Live altitude from GPS and the built-in barometer, updated as you move - Real-time air pressure in hPa with a plain-language conditions band - Oxygen level estimate so you can gauge thin air at high elevation - Record any climb and capture gain, peak, ascent, descent and range - Compare your height to Everest, K2, Mont Blanc, Fuji and more famous peaks - Atmosphere reference chart: pressure and oxygen at every elevation, meters or feet PERFECT FOR - Hikers and mountaineers tracking elevation on the trail - Cyclists and trail runners logging total ascent - Drone pilots and skiers checking altitude before takeoff or a run - Anyone curious how high their town, hotel or lookout really sits WHY NOT JUST CHECK THE BUILT-IN COMPASS? The Compass app shows one static altitude and nothing else. AltiMeter reads live pressure, estimates oxygen, records your whole climb as a chart you can revisit and export, and works offline through the barometer when GPS drops out. PRIVACY Every reading stays on your device. No account, no ads, no tracking. FULL ACCESS AltiMeter is free to see your live altitude, pressure and oxygen. Go Premium to record unlimited climbs, keep your full session history with detailed stats, and export any track to share or log. Premium is offered as a weekly or yearly subscription, or a one-time lifetime purchase, unlocking every feature the moment you upgrade. Open AltiMeter and read your altitude in one tap — then start tracking your next climb. Terms of Use (EULA): https://web-levi.web.app/terms Privacy Policy: https://web-levi.web.app/privacy-policy Questions? tphuc.work@gmail.com

About

SmsLLM

Features
Read full description

SmsLLM filters scam, phishing, and spam texts from unknown senders — and it does it privately, on your iPhone. WHY SMSLLM • On-device. Every unknown-sender text is judged right on your phone by a fast rule engine. Your messages are never uploaded and never stored. • Honest about privacy. The only data that ever leaves your phone is a message you choose to report — and it's never linked to you. • Always current. Scams change every week. Our rules are continuously generated by AI from real-world reports and public scam intelligence, then delivered to your device as updates. • Explains itself. See which kinds of scams we catch and why — not a black box. • Bilingual. Works out of the box in English and Chinese. HOW IT WORKS iOS lets approved apps filter texts from people who aren't in your contacts. SmsLLM checks those messages on-device and sorts the bad ones into Junk, while filing legitimate transactional and promotional texts neatly. You report the ones we miss; everyone's protection improves. PRIVACY FIRST • No tracking. No ads. No third-party analytics. • Filtered messages are processed transiently and discarded. • AI never reads your private messages — it learns from reports and public sources. WHAT IT CAN'T DO (because iOS doesn't allow it) • Messages from your contacts and iMessages are never filtered — Apple doesn't pass them to filter apps. We tell you this plainly instead of pretending otherwise. Subscription unlocks filtering and funds the daily rule updates that keep it sharp. Manage or cancel anytime in the App Store. SmsLLM Pro is an auto-renewable subscription. Monthly US$2.99 / Yearly US$19.99 (with a 7-day free trial). Payment is charged to your Apple Account at confirmation. It auto-renews unless cancelled at least 24 hours before the end of the period; manage or cancel in your Apple Account settings. Privacy Policy: https://smsllm.long2ice.io/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Altimeter4 screens
SmsLLM4 screens

Verdict

The call

The clearest difference is update cadence: SmsLLM at every 10 days against Altimeter's every 4 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Altimeter sells 3 in-app purchases, starting at $2.99 per 7 days and SmsLLM sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Altimeter ships an update every 4 weeks, SmsLLM every 10 days. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

Scorecard1 real difference Ā· 5 level
Altimeter versus SmsLLM: the parameters behind the verdict, then further details
ParameterAltimeterSmsLLM
PriceFreeFree
Update frequencyEvery 4 weeksEvery 10 days — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhoneiPhone
Requires iOS17.016.0 — better
Further details — not scored
Size8 MB1 MB
Age rating4+4+
DeveloperPhuc Pham金龙 彭

In-app purchases

3 purchases

Altimeter

Subscriptions2
  • Climb Log: Weekly$2.997 Days
  • Summit Height: Yearly$14.991 Year
One-time1
  • Offline Altitude: Pay Once$29.99
2 purchases

SmsLLM

Subscriptions2
  • SmsLLM Pro Monthly$2.991 Month
  • SmsLLM Pro Yearly7 Days trial$19.991 Year

Questions

Is Altimeter free?
Altimeter is free to download, with in-app purchases available.
Is SmsLLM free?
SmsLLM is free to download, with in-app purchases available.
Do Altimeter or SmsLLM have ads?
Neither Altimeter nor SmsLLM shows ads.
Which is updated more often, Altimeter or SmsLLM?
Altimeter ships an update every 4 weeks, and SmsLLM every 10 days. Most recently, Altimeter was updated on October 31, 2026 and SmsLLM on November 5, 2026.

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