Comparison

Grazing Calculator vs Farm Source Dairy Diary

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

Head to head
About

Grazing Calculator

This app helps dairy and beef farmers quickly calculate common grazing-related equations. It offers tools for determining days in a paddock, daily feed intake, crop allocation, and pasture cover. Users can choose between metric and US measurement systems and share their results.

Highlights
  • Days in Paddock calculation
  • DM/Cow/Day calculation
  • Crop Allocation calculation
  • Pre-Grazing Cover calculation
  • Average Pasture Cover calculation
  • Metric/US unit selection
  • Shareable results with notes
Features
Read full description

A quick and simple way to calculate a number of common grazing related equations used by dairy and beef farmers. This app is the brainchild of a dairy farmer, who wanted a fast and easy way for him and his workers to be able to do grazing related calculations, and was designed and developed in collaboration with his sister, with input from other farmers and farm advisors. Designed to be used out on the farm and on the go, this app makes it quick, easy and simple for anyone working on a dairy or beef farm - regardless of their level of experience and knowledge - to get the numbers they need, when they need them. About the calculators (visit our website for more detailed descriptions): โ— Days in Paddock - Work out the approximate number of days to leave a specific number of cows in a paddock using either: โ—ฆ kgDM/cow or lbDM/cow allocation, paddock size, cover and residual. โ—ฆ m2/cow/day or yd2/cow/day allocation and paddock size - These results can then be used to calculate approximately where to put the break fence in a paddock. โ— DM/Cow/Day - Work out approximately how many kgDM/cow/day or lbDM/cow/day you will get from a paddock based on paddock size, cover, residual, number of cows and number of days. - This result can then be used to calculate approximately where to put the break fence in a paddock โ— Crop Allocation - Work out the approximate area of crop to allocate and the approximate number of days you can leave the cows in a paddock based on yield, the number of cows, the kgDM/cow/day or lbDM/cow/day required and paddock area. - This result can then be used to calculate approximately where to put the break fence in a paddock โ— Pre-Grazing Cover - Work out the approximate target pre-grazing cover or the paddock trigger level based on stocking rate, intake, round length or rotation and the optimum residual. โ— Average Pasture Cover - Work out the approximate average pasture cover for your farm based the pre-grazing cover and optimum residual. Enter the values directly or use the result from the Pre-Grazing Cover calculator. Other Features: โ— Choose to do the calculations in Metric or US system of measurement. On first installing the app will be promoted to choose from using either the Metric or US system of measurement. You can change the selected units at any time via the Settings. โ— Share the result of the calculation using any of the available options off your device. โ— Settings options for the shared content: - send answer only, or send the answer and variables - include or don't include units - always edit before sending, never edit or choose each time whether edit or not โ— Add a note after completing the calculation e.g. paddock or mob name. This note will be included in the shared content. โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€” Thanks to everyone who has given feedback and suggestions! It has been very useful in helping us improve the app. We are always looking for ways to make the app better, so please contact us if you have any feedback or suggestions.

About

Farm Source Dairy Diary

This app streamlines farm management by allowing quick recording of animal treatments, feed, fertiliser, and effluent applications. It automatically calculates withholding periods and RTV dates, saving time and ensuring compliance. The app functions offline, making it usable even without mobile coverage.

Highlights
  • Record animal treatments
  • Track feed and fertiliser applications
  • Log effluent and agrichemical spraying
  • Manage monthly hygiene checks
  • Calculate withholding and RTV dates
  • Offline functionality
Features
Read full description

Dairy Diary is the quickest way to record Animal Treatments, Feed, Fertiliser and Effluent applications, Agrichemical spraying, Grazing and Monthly Hygiene Checks - Calculates withholding dates, when to give doses and RTV dates so you don't have to. - Auto-populate witholdings from the last time you used the drug. - Massive timesaver when analysing treatment records with the team , the vet or Farm Dairy Assessor. - Seamless synchronisation. Use it around the farm even when there is no mobile coverage as the app works offline.

Screenshots

Grazing Calculator4 screens
Farm Source Dairy Diary4 screens

Verdict

The call

The clearest difference is price: Farm Source Dairy Diary at Free against Grazing Calculator's $1.99. Farm Source Dairy Diary also leads on update cadence (fortnightly vs every 3 months). Grazing Calculator's advantage is review sentiment (60% vs 44%) and iOS requirement (13.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Farm Source Dairy Diary is free to download; Grazing Calculator costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Grazing Calculator ships an update every 3 months, Farm Source Dairy Diary fortnightly. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

Scorecard5 real differences ยท 3 level
Grazing Calculator versus Farm Source Dairy Diary: the parameters behind the verdict, then further details
ParameterGrazing CalculatorFarm Source Dairy Diary
Price$1.99Free โ€” better
Positive reviews60.0% of reviews โ€” better44.4% of reviews
Update frequencyEvery 3 monthsFortnightly โ€” better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree โ€” better
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS13.0 โ€” better17.0
Further details โ€” not scored
Size2 MB43 MB
Age rating4+4+
DeveloperLouise HathawayFonterra Co-Operative Group

Customer experience

Grazing Calculator

Written reviews5 reviews
Positive60.0%
Neutral20.0%
Negative20.0%

Farm Source Dairy Diary

Written reviews9 reviews
Positive44.4%
Neutral22.2%
Negative33.3%

In-app purchases

None

Grazing Calculator

No in-app purchases

None

Farm Source Dairy Diary

No in-app purchases

Questions

Is Grazing Calculator free?
Grazing Calculator costs $1.99, with no in-app purchases.
Is Farm Source Dairy Diary free?
Farm Source Dairy Diary is free to download, with no in-app purchases.
Do Grazing Calculator or Farm Source Dairy Diary have ads?
Neither Grazing Calculator nor Farm Source Dairy Diary shows ads.
Which is updated more often, Grazing Calculator or Farm Source Dairy Diary?
Grazing Calculator ships an update every 3 months, and Farm Source Dairy Diary fortnightly. Most recently, Grazing Calculator was updated on November 1, 2026 and Farm Source Dairy Diary on November 4, 2026.

Other comparisons