Comparison

TLAR vs Stadia Altimeter

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

Head to head
About

TLAR

This app calculates aircraft performance for general aviation pilots, including takeoff, climb, cruise, and landing. It offers basic calculations for pre-loaded aircraft in the free version, with advanced real-time, dynamic performance metrics and emergency glide functionality in its subscription tiers.

Highlights
  • Aircraft performance calculations
  • Real-time dynamic recalculations
  • Emergency glide functionality
  • Heads-up display mode
  • Global airfield database
  • Customizable safety margins
Read full description

The TLAR ("That Looks About Right!") app is designed to improve general aviation pilot situational awareness of aircraft performance. TLAR computes takeoff, climb, cruise, and landing performance of the following single-engine aircraft types (Expert version allows you to build your own plane type, below are pre-loaded): • Aero L39C (L39) • American Champion Super Decathlon (8KCAB) • Bonanza A36 (A36) • Cessna 150M (C150M) • Cessna 152 (C152) • Cessna 170B (C170B) • Cessna 172M (C172M) • Cessna 172N (C172N) • Cessna 172S (C172S) • Cessna 180K (C180K) • Cessna 182P (C182P) • Cessna T-240 (C240T) • Cessna A185F (CA185F) • Cirrus SR20 (SR20) • Cirrus SR22 (SR22) • Cirrus SR22T (SR22T) • Cub Crafters FX-2 (FX2) • Cub Crafters FX-3 (FX3) • Diamond DA40 (DA40) • Glasair Sportsman (GLSP) • Glasair Glastar (GLST) • Harmon Rocket II (HROC2) • Kitfox 7 Series SS (K7SS) • Kitfox 7 Series STI (K7STI) • Mooney M20F (M20F) • North American Aviation T-6G (T6G) • Piper J3 (J3) • Piper PA18 (PA18) • Piper PA22 (PA22) • Piper PA24-250 (PA24250) • Piper PA24-260 (PA24260) • Piper PA28-140 (PA28140) • Piper PA28-181 (PA28181) • Vans RV-4 (RV4) • Vans RV-6 (RV6) • Vans RV-7 (RV7) • Vans RV-8 (RV8) • Vans RV-10 (RV10) • Vans RV-12iS (RV12iS) • Vans RV-14A (RV14A) The basic version of the app is free.  It predicts aircraft performance using user-entered weather and elevation information in a static fashion like a calculator. The pro version requires a subscription, but offers significantly more features and capabilities. It dynamically recalculates performance in real time responding to the aircraft's 3D position and automatically updated weather conditions. With the addition of airfield information from either the included 73,000 airfield global database or user-defined airstrips, TLAR computes additional performance metrics such as predicted height by end of the runway on takeoff, bearing, distance, glide path, and descent rate required to the airfield, predicted stopping point on the runway during landing, approach stability on short-final, displaying that status visually, and audibly in your headset (for aircraft with communication panels that can connect via bluetooth or cable to your phone). The pro version allows the pilot to set tailorable safety margins and warns the pilot if predicted performance will violate any of the set safety criteria. The expert version adds patent-pending emergency glide functionality, telemetry recording, and automatic landing zone loading. It will tell you where and how high you will be when your aircraft will be capable of conducting an engine windmilling turnback to the runway on takeoff or in cruise. During takeoff and climb it will show you your current wind-corrected glide footprint and announce on headset your latest abort point, when a turnback is possible and show you the route of flight back to the runway along with your predicted altitude when reaching the runway. The expert version also has a heads-up display, NEXRAD radar, custom plane types, and store telemetry. We continue to add features to this version. Supported iPhone models: : X and up Operating system: iOS 17 or better for new interface (14.3 thru 16 will download the legacy TLAR version which has nearly the same functions, but a different interface). Supported iPad models: cellular models required (GPS) with minimum A12 chip performance or greater For more information or to download the TLAR Pilot Manual see www.TLARPILOT.com. You can find the End User License Agreement at: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ And you can read the Owyhee Aviation, LLC privacy policy here: https://www.tlarpilot.com/privacy-policy.html

About

Stadia Altimeter

This application displays your current altitude. It is designed for users who need to track their elevation, especially when engaging in outdoor activities. The app provides a straightforward way to monitor your height above sea level.

Highlights
  • Displays current altitude
  • Elevation tracking
  • Outdoor activity support
  • Simple interface
Features
Read full description

Stadia App for the Stadia Altimeter by Skeeter Enterprises

Screenshots

TLAR4 screens
Stadia Altimeter3 screens

Verdict

The call

The clearest difference is in-app purchases: Stadia Altimeter at none against TLAR's 2. Stadia Altimeter also leads on iOS requirement (11.0 vs 15). TLAR's advantage is update cadence (every 3 weeks vs every 9 months). On price, rating, ratings volume and ads 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. TLAR sells 2 in-app purchases, starting at $1.99 per month. Stadia Altimeter asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for TLAR against 5.0 for Stadia Altimeter. Both are backed by a comparable volume of ratings — 5 and 2 respectively.

UpkeepUpdate frequency

TLAR ships an update every 3 weeks, Stadia Altimeter every 9 months. Both last shipped on November 3, 2026.

Scorecard4 real differences · 6 level
TLAR versus Stadia Altimeter: the parameters behind the verdict, then further details
ParameterTLARStadia Altimeter
PriceFreeFree
Rating5.0 (5 ratings)5.0 (2 ratings)
Positive reviews75.0% of reviews—
Number of ratings5 — better2
Update frequencyEvery 3 weeks — betterEvery 9 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS1511.0 — better
Further details — not scored
Size230 MB20 MB
Age rating4+4+
DeveloperOwyhee Aviation, LLCSkeeter Enterprises LLC

Customer experience

TLAR

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

Stadia Altimeter

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

TLAR

Subscriptions2
  • pro$1.991 Month
  • expert$3.991 Month
None

Stadia Altimeter

No in-app purchases

Questions

Is TLAR free?
TLAR is free to download, with in-app purchases available.
Is Stadia Altimeter free?
Stadia Altimeter is free to download, with no in-app purchases.
Which has better reviews, TLAR or Stadia Altimeter?
TLAR and Stadia Altimeter are both rated 5.0 out of 5 on the App Store, from 5 and 2 ratings respectively.
Do TLAR or Stadia Altimeter have ads?
Neither TLAR nor Stadia Altimeter shows ads.
Which is updated more often, TLAR or Stadia Altimeter?
TLAR ships an update every 3 weeks, and Stadia Altimeter every 9 months. Most recently, TLAR was updated on November 3, 2026 and Stadia Altimeter on November 3, 2026.

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