Comparison

WindsAloftPro vs Sylva Deer Manager

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

Head to head
About

WindsAloftPro

This app calculates winds aloft for U.S. locations, providing data from 5000 to 39000 feet. It can also display crosswinds along your route and allows manual adjustment of climb and descent biases for various aircraft.

Highlights
  • Winds aloft calculation
  • Crosswind display
  • Climb/descent bias modification
  • U.S. location support
  • Altitude range 5000-39000 ft
Features
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Calculates winds aloft for U.S. locations from 5000 feet to 39000 feet. Crosswinds can also be displayed for winds along your route of travel. Climb and descent biases can be manually modified for different aircraft performance numbers.

About

Sylva Deer Manager

Features
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Take your deer and wildlife management to the next level. SYLVA Deer Manager helps stalkers, deer managers, syndicates and estates record, organise and analyse deer management data, with statistics, graphs and data export tools to support decisions and reports. Use the mobile app to record stalks, sightings, shots, culls, notes and larder information while in the field or afterwards. You can also add carcass details, weights, body condition, parasites, lesions, other health findings and venison sales. The web dashboard gives a clearer view of what is happening over time, with charts, filters, statistics and downloadable data to help with reporting and management decisions. Different roles allow stalkers to keep their own records, while deer managers or group organisers can review wider activity where access has been given. Key features: • Useful for individual stalkers, deer managers, syndicates, groups and estates. • Cull, larder and carcass records and statistics. • Venison sales, income tracking and sales statistics. • Graphs, reports and data exports • Wildlife health observations and long-term deer management data. SYLVA is being developed with feedback from UK deer managers, stalkers and veterinarians, with more features and improvements on the way.

Screenshots

WindsAloftPro2 screens
Sylva Deer Manager4 screens

Verdict

The call

The clearest difference is update cadence: Sylva Deer Manager at weekly against WindsAloftPro's every 6 months. On price, ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

WindsAloftPro ships an update every 6 months, Sylva Deer Manager weekly. The most recent releases landed on October 4, 2026 and October 9, 2026 respectively.

Scorecard1 real difference · 9 level
WindsAloftPro versus Sylva Deer Manager: the parameters behind the verdict, then further details
ParameterWindsAloftProSylva Deer Manager
PriceFreeFree
Rating3.0 (3 ratings) — better—
Positive reviews33.3% of reviews—
Number of ratings3 — better—
Update frequencyEvery 6 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.215.1 — better
Further details — not scored
Size7 MB67 MB
Age rating4+4+
DeveloperTremont Air, LLCSylva Deer and Veterinary Services

In-app purchases

None

WindsAloftPro

No in-app purchases

None

Sylva Deer Manager

No in-app purchases

Questions

Is WindsAloftPro free?
WindsAloftPro is free to download, with no in-app purchases.
Is Sylva Deer Manager free?
Sylva Deer Manager is free to download, with no in-app purchases.
Do WindsAloftPro or Sylva Deer Manager have ads?
Neither WindsAloftPro nor Sylva Deer Manager shows ads.
Which is updated more often, WindsAloftPro or Sylva Deer Manager?
WindsAloftPro ships an update every 6 months, and Sylva Deer Manager weekly. Most recently, WindsAloftPro was updated on October 4, 2026 and Sylva Deer Manager on October 9, 2026.

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