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.
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.
- 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
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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: โฆ kgDM/cow or lbDM/cow allocation, paddock size, cover and residual. โฆ 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. โโโโโโโโโโโโโโโโโโโโโโโโ 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.
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.
- Record animal treatments
- Track feed and fertiliser applications
- Log effluent and agrichemical spraying
- Manage monthly hygiene checks
- Calculate withholding and RTV dates
- Offline functionality
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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
Verdict
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
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.
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.
| Parameter | Grazing Calculator | Farm Source Dairy Diary |
|---|---|---|
| Price | $1.99 | Free โ better |
| Positive reviews | 60.0% of reviews โ better | 44.4% of reviews |
| Update frequency | Every 3 months | Fortnightly โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free โ better |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPad |
| Requires iOS | 13.0 โ better | 17.0 |
| Further details โ not scored | ||
| Size | 2 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | Louise Hathaway | Fonterra Co-Operative Group |
Customer experience
Grazing Calculator
Farm Source Dairy Diary
In-app purchases
Grazing Calculator
No in-app purchases
Farm Source Dairy Diary
No in-app purchases
Questions
Is Grazing Calculator free?
Is Farm Source Dairy Diary free?
Do Grazing Calculator or Farm Source Dairy Diary have ads?
Which is updated more often, Grazing Calculator or Farm Source Dairy Diary?
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