# TLAR — Aircraft Performance > General aviation aircraft performance calculator with real-time and emergency glide features. (iPhone/iPad app by Owyhee Aviation, LLC.) - Source: https://appshunter.io/ios/app/tlar/id1558908342 (this page in markdown: same URL + `.md`) - Developer: [Owyhee Aviation, LLC](https://appshunter.io/developer/1558908344) - Category: Navigation, Reference - Price: Free with in-app purchases - Rating: 5.00/5 from 5 App Store ratings · 4 written reviews indexed - Age rating: 4+ - Requires: iOS 14.3 · 219 MB - Languages: American English - Released: 2022-11-06 - Data updated: 2026-08-24 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/tlar/id1558908342/reviews.md ## What is TLAR? 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 piston-powered 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 ## Key features - Aircraft performance calculations - Real-time dynamic recalculations - Emergency glide functionality - Heads-up display mode - Global airfield database - Customizable safety margins ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | pro | $1.99 | per month | | expert | $3.99 | per month | ## Recent user reviews (4 of 4) All indexed reviews: https://appshunter.io/ios/app/tlar/id1558908342/reviews.md ### 2/5 — Very US centric *2025-11-25* Needs to provide an option to show baro in Hpa and fuel in litres. **Developer response:** You can select units using the unit settings menu. Baro options are inHg and Millibars. Fuel options are gallons, liters, pounds and kilograms. ### 5/5 — Really useful tool *2024-09-24* Very helpful tool. Highly recommend it! And inexpensive on top of it all! ### 5/5 — Kind of confusing, but does what it says… *2023-10-07* I met the author at OSH, AirVenture and was sold. This data should be in all EFBs. A lot of information in a small space. Needs a iPad version. ### 5/5 — No Brainer *2023-07-26* This is a Fantastic tool for your flight/Simulator flying. The pricing at $1/month is a Super Bargin. If you ever wanted a quick way to see and use your aircraft’s performance, this is IT!! ## Frequently asked questions about TLAR ### What aircraft types does TLAR support? TLAR supports a wide range of single-engine piston-powered aircraft. The free version includes pre-loaded models like the Cessna 172 and Piper J3. The Expert version allows for custom aircraft type creation. ### How does TLAR's Pro version differ from the basic version? The Pro version offers dynamic, real-time performance recalculations based on 3D position and updated weather. It also includes an airfield database, glide path calculations, and visual/audible approach stability displays. ### What is the emergency glide functionality in TLAR's Expert version? The Expert version provides patent-pending emergency glide functionality. It calculates your wind-corrected glide footprint and announces your latest abort point, showing a route back to the runway with predicted altitude. ### What are the subscription costs for TLAR? TLAR offers subscription plans for its advanced features. The Pro version is $1.99 per month, and the Expert version is $3.99 per month. ### Does TLAR have ads? No, TLAR does not contain advertisements. The app is free to download and use for basic features, with optional in-app purchases for Pro and Expert versions. ### What devices is TLAR compatible with? TLAR is currently supported on iPhones and iPods. It has an age rating of 4+. ### How often is TLAR updated? TLAR was last updated on March 25, 2026, indicating a recent development cycle. The latest version available is 7.88. ### Can TLAR be used offline? The basic version of TLAR functions like a calculator, predicting performance statically. The Pro and Expert versions, which offer real-time and dynamic features, likely require an active internet connection for weather and airfield data. ## Version history (last 5 releases) ### 8.1 — 2026-08-09 - [ ] turning departures - [ ] better lz loading ux - [ ] xplane integration - [ ] sub hourly asos - [ ] smoothed fpa hud and map - [ ] updated cust plane accuracy - [ ] added map plus two layout - [ ] share presets - [ ] share custom planes - [ ] share LZ - [ ] new manual - [ ] more notifications - [ ] smart flaps - [ ] fixed set fpa persist - [ ] gsi and cdi on hsi - [ ] gps correction displayed - [ ] onspeed ahars integration - [ ] fixed jitter e return route with right crosswind - [ ] changed metar wind direction to magnetic - [ ] added toggle to display wind direction in mag or true - [ ] standardized emergency mode chicklets and locations - [ ] added lz mode, flip rwy, and surface condition buttons to main LZ menu ### 8.0 — 2026-07-17 The same solid physics/aero-engine that has always powered TLAR, but with a radically re-engineered tile-based user interface that puts you in charge of what does where! Plus: we added the North American T6G, NEXRAD radar (-expert only), Time Zone awareness, Ceiling and Visibility, and much more. ### 7.92 — 2026-05-15 o Added American Champion Super Decathlon (8KCAB) and Vans RV-6 aircraft. -all versions o Fixed bug whereby editing the glide ratio or glide speed while in emergency mode failed to re-calculate the set fpa. -expert ### 7.91 — 2026-05-01 Fixed a bug in the solar azimuth elevation function that caused a crash in rare circumstances. ### 7.90 — 2026-04-29 o RevenueCat back-end upgraded -all versions ## Apps similar to TLAR | App | Rating | Price | Category | | --- | --- | --- | --- | | [Hughes App](https://appshunter.io/ios/app/hughes-app/id1491944548) | 4.9 (8) | Free | Navigation | | [Stratus Horizon Pro](https://appshunter.io/ios/app/stratus-horizon-pro/id1001279833) | 3.8 (36) | Free | Navigation | | [PlaneTour](https://appshunter.io/ios/app/planetour/id6504721834) | — | Free | Navigation | | [SocialFlight](https://appshunter.io/ios/app/socialflight/id533008888) | 3.1 (139) | Free | Navigation | | [SkyTimer](https://appshunter.io/ios/app/skytimer/id1521776101) | 4.1 (21) | Free | Navigation | | [NRST](https://appshunter.io/ios/app/nrst/id828514590) | 4.5 (8) | Free | Navigation | --- *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 2026-08-24.*