TBM Performance vs GrowCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TBM Performance
This app calculates essential flight performance data for Daher TBM aircraft, covering takeoff, landing, climb, cruise, and emergency procedures. It includes tools like a glide distance calculator, circuit breaker finder, and risk analysis.
- Flight performance calculations
- Takeoff and landing data
- Climb and cruise performance
- Emergency procedures
- Glide distance calculator
- Circuit breaker finder
- Risk analysis tool
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TBM Performance computes all the useful performance numbers for flight planning for Daher (Socata) TBM aircraft models. It includes calculations for takeoff, landing, climb, cruise, descent, instrument procedures as well as emergencies. The app contains a complete set of normal and emergency procedures,including a glide distance calculator that handles headwinds and tailwinds, and an interactive circuit breaker finder. It also includes a hold entry calculator, a radar page, and a risk analysis tool. TBM Performance is also available on other mobile devices and as a WebApp (an App that runs in a browser) that runs on a variety of platforms (PC, Mac, tablets, phones). The cloud sync feature allows flight planning profiles entered on any device to be synchronized with your other devices when connected to the Internet. TBM Performance is a free, open-source development effort and has Apps and WebApps for other aircraft. See http://pohperformance.com for complete details.
GrowCalc
This app is a comprehensive lawn care toolkit that uses precision math and live climate data to help users grow healthier lawns. It offers tools for calculating fertilizer rates, logging applications, diagnosing issues with AI, and tracking weather patterns. Manage multiple lawn zones and access global pest pressure data.
- Precision NPK calculator
- Smart application logging
- AI photo diagnosis for weeds and diseases
- AI lawn assistant for expert advice
- Live weather and spray window forecasts
- Growing Degree Days (GDD) tracking
- Global pest and disease pressure monitoring
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GrowCalc — Precision Lawn Care in Your Pocket GrowCalc is the complete agronomic toolkit for lawn enthusiasts, homeowners, and turf professionals. Built on precision math and backed by live climate data, it removes the guesswork from every application so you can grow a healthier lawn with confidence — anywhere in the world. PRECISION NPK CALCULATOR: Calculate exact N-P-K rates per 1,000 sq ft (or 100 m²) for any product. Full support for granular, liquid, and ready-to-spray (RTS) formulations, with density, coverage, and dilution math handled automatically. Tank-mix multiple products in a single "cocktail" and see nutrient totals for the entire mix at a glance. SMART APPLICATION LOG: Log every fertilizer, herbicide, fungicide, insecticide, and plant growth regulator applied to your property. Track season totals per zone, monitor cumulative NPK, and export complete records for review or record-keeping. AI PHOTO DIAGNOSIS: Snap a photo of any weed, disease, insect damage, or nutrient deficiency and receive an instant identification with a step-by-step treatment plan — powered by advanced AI trained on turf science. AI LAWN ASSISTANT: Ask any lawn-care question and get expert-grade answers on demand. From product substitutions to timing questions, your personal agronomy advisor is always one tap away. LIVE WEATHER & SPRAY WINDOWS: Hyperlocal forecasts, hourly conditions, and soil data driven by your GPS location. Color-coded Spray Windows show whether the next seven days are Excellent, Good, Fair, or Poor for application — with clear "why" reasoning based on wind, rain, and temperature. GROWING DEGREE DAYS (GDD): Track live Growing Degree Days for your climate to time PGR reapplications, fungicide intervals, pre-emergent windows, and pest activity. Automatic reminders fire when it's time to reapply. BIO WATCH — GLOBAL PEST & DISEASE PRESSURE: Real-time pest, fungus, and disease pressure indicators for any location worldwide. Stay ahead of pressure spikes before they cost you a summer. SEASONAL AGRONOMIC CALENDARS: Month-by-month task schedules tuned to warm-season and cool-season grasses — covering fertilization, aeration, dethatching, pre-emergent timing, seeding, and more. PRODUCT LIBRARY & DASHBOARD: Save your go-to products with full labeled specs (NPK, active ingredients, coverage, application rates). Season-at-a-glance dashboard summarizes nutrients delivered, treatments logged, and upcoming reminders across every zone. WARRANTY & EQUIPMENT KEEPER: Store equipment receipts, maintenance history, and warranty expiration dates in one secure vault — with expiry countdowns so you never miss a claim window. MULTI-ZONE PROPERTY MANAGEMENT: Track front, back, side, and specialty areas independently. Perfect for enthusiasts, property owners, and pros managing multiple lawns. METRIC & IMPERIAL, WORLDWIDE: Every calculation, weather feed, and biological tracker works globally. Full dynamic unit conversion throughout the app — no matter where you live or what units you prefer. GO PRO Unlock GrowCalc Pro for full GDD projections, multi-zone tracking, season archives with CSV export, unlimited AI diagnoses, and priority feature access. Whether you're chasing that stripe-worthy backyard, managing a private estate, or maintaining multiple properties, GrowCalc puts professional-grade turf science in your pocket. Download GrowCalc and grow smarter today. Privacy Policy: https://growcalcs.com/privacy | Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: TBM Performance at none against GrowCalc's 2. TBM Performance also leads on ratings volume (14 vs 2) and iOS requirement (13.0 vs 15.1). GrowCalc's advantage is ads (none vs shown) and update cadence (every 9 days vs every 2 months). On price, rating 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
Both are free to download. GrowCalc sells 2 in-app purchases, starting at $4.99 per month. TBM Performance asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for TBM Performance against 5.0 for GrowCalc. That said, the two scores are not equally well evidenced: TBM Performance has 14 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 88% of TBM Performance's written reviews are positive against 100% of GrowCalc's.
TBM Performance ships an update every 2 months, GrowCalc every 9 days. The most recent releases landed on July 23, 2026 and September 4, 2026 respectively.
| Parameter | TBM Performance | GrowCalc |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (14 ratings) | 5.0 (2 ratings) |
| Positive reviews | 87.5% of reviews | 100.0% of reviews — better |
| Number of ratings | 14 — better | 2 |
| Update frequency | Every 2 months | Every 9 days — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Freemium |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 20 MB | 53 MB |
| Age rating | 4+ | 12+ |
| Developer | POH Performance L.L.C. | REINALDO CAMACHO |
Customer experience
TBM Performance
GrowCalc
In-app purchases
TBM Performance
No in-app purchases
GrowCalc
- GrowCalc Pro7 Days trial$4.991 Month
- GrowCalc Pro7 Days trial$49.991 Year









