Comparison

SAS Survival Guide vs GrassMaster

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

Head to head
About

SAS Survival Guide

Learn essential survival skills from a former SAS soldier. This comprehensive guide offers expert advice on wilderness and urban survival, including first aid, navigation, and identifying plants and animals. Test your knowledge with quizzes and checklists.

Highlights
  • Full text of bestselling survival book
  • Survival tip videos
  • Photo galleries of flora, fauna, and knots
  • Morse code signaling device
  • Survival quizzes and checklists
  • Sun compass and search tool
  • Extreme climate survival sections
  • Urban survival tips
Features
Currently charting
Read full description

▶▶ Prepare for the Hurricane Season with 30% off the retail price ◀◀ For over twenty years, the SAS Survival Guide has been the definitive guide to surviving any situation, anywhere in the world. Now, for the first time ever, the million-copy bestselling book has been reinvented for the iPhone. iPad User? Check the SAS Survival Guide for iPad ! Please Note : This app only contains the English language content of the SAS Survival Guide ▶▶▶▶▶▶▶▶▶▶▶▶ ACCOLADES ◀◀◀◀◀◀◀◀◀◀◀◀ • Official Honoree Award at the 15th Annual Webbys • Selected for iTunes REWIND 2010 • Apple Featured Application • Featured in iTunes 'Staff Favourites' • Also features in "WHAT'S HOT" and "NEW & NOTEWORTHY" in most countries • Has been ranked the #1 LIFESTYLE APP in almost all geographic locations ▶▶▶▶ ABOUT 'SAS SURVIVAL GUIDE' ◀◀◀◀ Written by former SAS soldier and instructor, John "Lofty" Wiseman, this application brings you the elite training techniques of Britain’s toughest fighting force in the most accessible version ever. Now you can take the original set of world-class survival skills with you anywhere in the world – from the peaks of Kilimanjaro to the deserts of Kandahar…or to your closest national park. This FULLY SELF CONTAINED app includes : * Full text of the bestselling book optimised for the iPhone (over 400 pages) * 16 videos providing invaluable survival tips from Lofty himself * Photo galleries of Animal Tracks, Knots, Edible, medicinal and poisonous plants, sea creatures and snakes * Morse Code signalling device * 100+ question quiz to test if you've got what it takes to survive * Survival Checklist * Sun Compass * Search tool to scan entire book by subject * Extreme Climate Survival: sections on surviving Polar, Desert, Tropical, and Sea * Comprehensive First Aid section ▶▶▶▶ ABOUT 'Urban SAS SURVIVAL' ◀◀◀◀ The ultimate guide to fending for yourself in an urban environment from the team that brought you the million-copy selling SAS Survival Guide. Written by legendary ex-SAS man John ‘Lofty’ Wiseman, the guide comes stuffed full of useful tips for fending for yourself in every urban situation. And many more besides. This interactive edition contains: * The latest training on self-defence and the law * Dealing with fire and hazardous chemicals * Tackling snake bites and other animal dangers * Handling DIY: power tools, welding, machinery and more * Terrorism * Health information * Full search functionality * Urban survival checklist * And more ----------------------------------------- PLEASE NOTE : During normal use, this app does not require an active internet connection however some assets, like videos, need to be downloaded and features like social sharing will be disabled without an active internet connection. The Internet Connection Alert message is only informational and does not affect the content or use of the app while offline.

About

GrassMaster

This app provides expert lawn care guidance, including fertilization, watering, and disease treatment. It features calculators for sod and mulch estimates, and offers detailed schedules for various grass types.

Highlights
  • Professional lawn maintenance methods
  • Sod and mulching material calculators
  • Weed and disease identification with reference images
  • Fertilizing schedules for common grass types
  • Exportable fertilization schedules for calendars
  • Covers 8 common turf grass types
Features
Read full description

GrassMaster contains proven maintenance methods used by the Pros to have your lawn looking beautiful! New version has a Sod Estimate Calculator and a Mulching Materials Estimate Calculator. Need to sod or mulch an area of your landscape? GrassMaster now makes it super-easy to estimate the materials and cost for sod or mulch! How and when to fertilize, water, treat weeds and common lawn diseases. GrassMaster includes reference images so you can quickly identify a particular disease so you know exactly what herbicides to buy. No more guess-work! The turf grass specifications in GrassMaster are not only our years of experience, but also right in line with turf maintenance practices recommended by Extension Offices and Universities all across the U.S. as well as many Landscaping Professionals. GrassMaster also includes an easy to follow Fertilizing Schedule for each Lawn type (listed below). The Schedule file can be Emailed right from this App and then imported into your favorite Calendar application (iCal, Outlook, etc.). If you're syncing your Calendar to iTunes, you can have the Schedule imported into your iPhone Calendar App. GrassMaster covers the most common Lawn/Turf grasses, including: Bahiagrass Bermuda Grass Bluegrass Centipede Grass Fescue Grass Ryegrass St. Augustine Grass Zoysia Grass We hope you enjoy using GrassMaster! For full details and more screenshots, questions or comments, please visit our Support site at: grassmaster.i2dllc.com

Screenshots

SAS Survival Guide4 screens
GrassMaster4 screens

Verdict

The call

The clearest difference is review sentiment: SAS Survival Guide at 68% against GrassMaster's 33%. SAS Survival Guide also leads on chart position (#87 vs unranked). GrassMaster's advantage is in-app purchases (none vs 2) and price ($2.99 vs $5.99). On update cadence, ads 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

SAS Survival Guide costs $5.99 and GrassMaster $2.99 up front. SAS Survival Guide sells 2 one-off in-app purchases. GrassMaster asks for nothing beyond the download.

UpkeepUpdate frequency

SAS Survival Guide ships an update every 4 months, GrassMaster every 7 months. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.

Scorecard6 real differences · 5 level
SAS Survival Guide versus GrassMaster: the parameters behind the verdict, then further details
ParameterSAS Survival GuideGrassMaster
Price$5.99$2.99 — better
Rating2.6 (70 ratings) — better—
Positive reviews68.5% of reviews — better33.3% of reviews
Number of ratings70 — better—
Update frequencyEvery 4 months — betterEvery 7 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
Best chart rank#87 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.611.0 — better
Further details — not scored
Size183 MB5 MB
Age rating4+4+
DeveloperTrellisys.netJohn Lullie

Customer experience

SAS Survival Guide

All ratings69 ratings
Positive39.1%
Neutral7.2%
Negative53.6%
Written reviews314 reviews
Positive68.5%
Neutral5.4%
Negative26.1%

GrassMaster

Written reviews12 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

Bugs and requests

SAS Survival Guide

Reported bugs

3 issues
  • App crashes on startup after recent updates
  • Inability to access purchased content
  • Compass feature not working correctly

Requested features

4 requests
  • Offline mode for full access without internet
  • More videos and interactive content
  • Tailored information for specific regions/climates
  • Improved search and bookmarking functionality

GrassMaster

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

SAS Survival Guide

One-time2
  • Urban SAS$3.99
  • SAS Survival Guide$3.99
None

GrassMaster

No in-app purchases

Questions

Is SAS Survival Guide free?
SAS Survival Guide costs $5.99, and also offers in-app purchases.
Is GrassMaster free?
GrassMaster costs $2.99, with no in-app purchases.
Do SAS Survival Guide or GrassMaster have ads?
Neither SAS Survival Guide nor GrassMaster shows ads.
Which is updated more often, SAS Survival Guide or GrassMaster?
SAS Survival Guide ships an update every 4 months, and GrassMaster every 7 months. Most recently, SAS Survival Guide was updated on November 1, 2026 and GrassMaster on October 29, 2026.

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