CALCULATE YOUR
NUTRIENT SOLUTION
The grams of fertilizer per 200 L drum — with or without a water analysis
How many grams do you add to the drum? Stop guessing it by eye.
Time just once how long your pump takes to fill the drum and the app gives you the grams for Tank A and B, per irrigation and per week — from $900 a year, VAT included. Have a lab analysis? Pro mode calculates like a chemist and warns you when something is not safe.
Most recipes
are copied, not calculated.
A brochure or your neighbor does not know your water. Applying the wrong recipe burns roots, throws money away on fertilizer and caps your yield. These are the four scenarios that show up most often in the field.
Your water is not the water in the brochure
Every water source carries its own salts, bicarbonates and sodium. A generic recipe ignores that chemistry and can throw the whole nutrient solution out of balance.
A fertigation mistake is expensive
Burning roots, precipitating salts in the tank or wasting fertilizer on a badly calculated dose adds up to losses that far exceed the cost of getting it right.
Spreadsheets do not warn you when something is wrong
An Excel sheet does whatever math you ask of it, even when the result is not safe. It does not tell a ready-to-use recipe apart from one that needs more data.
Nutritional consulting costs $8,000–25,000 MXN/season
Based on typical advisory quotes (2025–2026, Bajío region). Nutrisurco.App handles the calculation part of that advisory —just one component— for a fraction: from $900 a year, VAT included. The diagnosis and the field judgment stay with the agronomist.
The fertigation calculator
that works like a chemist.
It is not a spreadsheet with hidden formulas. It is a calculation engine with the same discipline as a laboratory: every step is explicit and every number is traceable — with a cleaner interface that tucks the technical detail behind an icon, so you see what matters first and open the explanation only if you need it.
Your water analysis, converted to elements
Enter your lab report and the app converts it to the elements that actually matter for plant nutrition — not just to generic salts.
Optimization with mathematical programming
The engine solves a 3-stage lexicographic linear programming problem — not an average or a rule of three — to find the optimal dose with the fertilizers you have on hand.
Salinity check (EC)
Every recipe is validated against the target electrical conductivity for your crop and stage, so it never crosses the threshold that stresses the root.
A/B tanks with no precipitates
The app automatically separates incompatible fertilizers (calcium from sulfates and phosphates, which form gypsum or calcium phosphate) between tank A and tank B so nothing precipitates in the irrigation line.
Acid calculation for bicarbonates
It determines the acid dose to bring the bicarbonate in your water down to the target level —leaving the residual alkalinity that buffers pH, not to zero—, a step most generic calculators skip entirely.
Honest gate: "do not release"
If your analysis does not meet the minimum quality or consistency criteria, the app refuses to hand you a released recipe and explains exactly what is missing — instead of inventing a nice-looking number.
Every extra gram does not vanish: it ends up in your soil and your water
The fertilizer you apply "just in case" does not disappear: it leaches into the water table, salts your soil and washes away in the drainage — you paid for it twice, once buying it and once degrading your land. Calculating the dose is the cheapest environmental measure there is: you apply what the plant asks for, with the salts your water already carries counted in, and the rest stays in the bag. That is why Nutrisurco.App calculates with the fertilizers YOU have instead of prescribing the ones in the brochure: making better use of what is already in your storeroom protects your wallet and your soil with the same decision. It is the same non-negotiable line as Nutrisurco®: what does not care for your land, we do not offer.
What is the difference between Nutrisurco.App and a fertigation spreadsheet?
A spreadsheet applies whatever formula you ask of it, regardless of whether the result is safe. Nutrisurco.App solves a real optimization problem with your water and your fertilizers, validates every result against agronomic criteria and refuses to release a recipe that does not meet the minimum quality bar.
Not a promise:
this is the screen you will use.
Real screenshots of a strawberry calculation with well water from the Bajío — this is what it looks like inside; your numbers will come from your own water.
Free DEMO mode,
no sign-up.
The DEMO mode runs on sample water so you can see how the engine works, step by step: the conversion to elements, the optimization, the EC check and the honest gate. And now you can time your own drum's real fill-rate right in the DEMO, to see the calculation with your flow before you pay. When you activate your license, you calculate with your own water and your own soil.
Four steps, no friction.
Try it free
Open the DEMO at app.nutrisurco.com and watch the engine work on sample water. No sign-up.
Choose your package
Basic (drum, $900), Advanced (drum + EC, $1,500) or Pro (full analysis). Pay online with a card, Mercado Pago or PayPal. Prices VAT included.
Get your code
When you pay online, your activation code arrives by email automatically.
Activate it in 1 minute
Enter the code in the app and calculate with your real data — your drum and your pump, or your water and soil analysis. Capture offline; it calculates on its own once you are back in coverage.
Start free.
Move up when the crop asks for it.
Your crop's cycle is the season, not the month: that is why the license is annual — a one-time payment, with no automatic charges. Pay online with a card, Mercado Pago or PayPal and your activation code arrives by email automatically. All prices are annual, in Mexican pesos (MXN) and VAT included, and you activate it in 1 minute.
Equivalent professional software —fertigation programs built from lab analyses— sells for between $27,000 and $83,000 Mexican pesos a year on the international market. Our plan for advisors costs a fraction of that, with an invoice and in your language.
- Your pump's real flow rate, from your own numbers: time how long your drum takes to fill and the app works it out
- Walk through the whole app: both modes, Field (Drum) and Pro (Tank)
- Watch the engine work on a strawberry example: doses, EC, warnings and the honest gate's verdict
- Full technical glossary, in English and Spanish
- To get the recipe with your own numbers —your water, your soil, your fertilizers— you need a license
- The grams for Drum A and B, per irrigation and per week — ready to weigh
- Flow rate from your own drum: you time how long it takes to fill, once, and the app works out your real flow
- A→rinse→B protocol and the dissolving order, so the fertilizers don't precipitate against each other
- Only the fertilizers you can actually get locally: switch yours on from a catalogue of 50
- Your soil analysis read against NOM-021 and saved by name — or start from a typical profile for your area if you don't have one yet
- Printable report, history and share the recipe over WhatsApp
- Backup of your data · 1 device · capture with no signal out on the ranch
- Everything in Basic, plus:
- Capture your water's EC with a ~$300–500 conductivity meter
- The app uses your EC as a salinity guardrail: it stops you before you overdo the salts
- EC logbook: record what you measure in the field and watch how it drifts over time
- Two-water mixer: if your water is too saline, it works out the proportion to blend it with a cleaner source and rescue it
- Built for well water or water of unknown quality
- Move up to Pro whenever you like — same code, you only pay the difference
- 1 device · capture with no signal out on the ranch
- Everything in Advanced, plus:
- Your full lab analysis: all 11 water ions, each cell in the unit your laboratory actually reports (meq/L, ppm as ion or as element, CaCO₃, PO₄³⁻, P₂O₅)
- The exact acid dose —sulfuric, phosphoric or nitric— in mL/m³ for your water's alkalinity
- Water micronutrients (Fe, Mn, Zn, B), with a warning when the iron in an alkaline well won't reach the root
- Analysis interpretation: hardness and alkalinity as CaCO₃, and the Ca:Mg:K ratios — the numbers, with no invented verdicts: the judgement is yours
- Full traceability: where every number came from — each nutrient's target, what your water contributes and what the fertilizers add
- Visual balance: salinity gauge and a chart of how much of the target was met, nutrient by nutrient
- Stock solutions A and B at your own concentration factor
- kg per hectare and week if you declare your area
- Every release passes a battery of automated tests —including validated reference cases— before it reaches you
- Everything in Pro, plus:
- A licence for 3 devices: the office computer, your phone and the tablet you take to the field
- The report carries YOUR brand: your name, your professional licence number, your phone and your logo
- Your logo sits alongside Nutrisurco's, not instead of it: the technical backing adds to your signature
- You hand your client a document of your own, not a screenshot of an app
- Folders by client and by ranch: every calculation tagged with the farm it belongs to
- History filtered by client — open the folder for the ranch you're about to visit and its whole record is there
- Each ranch's water and soil saved by name and reusable on the next round
- A traceability fingerprint on every report: if a document of yours circulates, its origin can be identified
- A single code for your 3 devices, activated in 1 minute
- Capture with no signal on any field you visit
- Everything in the Agronomist plan, for your whole network:
- 10 devices or more, adding and removing technicians whenever you need to
- Your company's branding on every report your team issues
- Online training by our team
- Consolidated invoicing: one invoice a year, not one per technician
- For universities and agronomy schools: classroom licenses so your students calculate with real data
One-time annual payment, no automatic charges — activate it in 1 minute. Guarantee: 14-day no-questions-asked refund. Every package includes everything in the ones before it and you can upgrade whenever you want with the same code. By purchasing you accept the Terms of Use and the Privacy Notice.
The limits of each plan
Swipe the table to see every plan →
| Feature | Demo | Basic | Advanced | Pro On promotion | Agronomist |
|---|---|---|---|---|---|
| Annual price (VAT included) | $0 | $900 | $1,500 | $1,900launch price · list | $7,900 |
| Devices | — | 1 | 1 | 1 | 3 |
| Field mode (Drum) | Yes | Yes | Yes | Yes | Yes |
| Pro mode (Tank) | Preview | — | — | Yes | Yes |
| Flow rate from your own drum | Yes | Yes | Yes | Yes | Yes |
| Recipe in grams from your numbers | Example only | Yes | Yes | Yes | Yes |
| A→rinse→B protocol and dissolving order | — | Yes | Yes | Yes | Yes |
| Soil analysis (NOM-021 criteria) | — | Yes | Yes | Yes | Yes |
| EC capture and salinity log | — | — | Yes | Yes | Yes |
| Two-water blender | — | — | Yes | Yes | Yes |
| Full water analysis (11 ions) | — | — | — | Yes | Yes |
| Acid calculation for bicarbonates | — | — | — | Yes | Yes |
| Interpretation: hardness, alkalinity, Ca:Mg:K ratios | — | — | — | Yes | Yes |
| Visual balance and EC meter | — | — | — | Yes | Yes |
| Printable report | — | Yes | Yes | Yes | Yes |
| Report with your branding and licence number | — | — | — | — | Yes |
| Folders by client and by ranch | — | — | — | — | Yes |
| History and data backup | — | Yes | Yes | Yes | Yes |
| Catalogue of 52 sources (42 commercial) | Fixed | Yes | Yes | Yes | Yes |
| Capture with no signal on the ranch | Yes | Yes | Yes | Yes | Yes |
| Invoice (CFDI) | — | Yes | Yes | Yes | Yes |
Need more devices, or licenses for a whole team? Write to us and we will sort it out: that is the Enterprise & institutions plan.
What people ask before
activating their license.
Does Nutrisurco.App work without internet?
Partly, and it is worth knowing what does and what does not. You can capture all your data out on the ranch with no signal: the app saves it and calculates on its own as soon as coverage is back. You can also open and print any recipe you already have saved, with no connection, and your licence stays valid for up to 14 days without connecting. What does need internet is calculating a new recipe, including the demo.
What happens if my water is not safe for a recipe?
Nutrisurco.App has an honest gate: if the analysis does not meet the minimum quality or consistency criteria, the app tells you explicitly and explains why, instead of handing you a released recipe with no basis.
What if my water is too salty?
The app ships a two-water mixer: if you have a cleaner source (a well, rainwater, a jug), you enter the EC of each one and the app tells you the proportion to blend them so the conductivity reaches what your crop tolerates, and it calculates the recipe with that blend. It is an estimate to guide the blend in the field, not a replacement for the analysis, but it often rescues water that used to end at "do not release".
Do I need a water analysis to use it?
No, and that is how most people work: a 200 L drum, a pump and fertilizer "by eye." Field mode (Basic package, $900/year) solves it with what you already have: you time once how long your pump takes to fill the drum —that is your flow rate—, you say how many hours you irrigate and how many times a week, and the app gives you the grams for Drum A and Drum B for each irrigation, the kilos per week and the protocol in order (A → rinse → B, so the fertilizers do not precipitate on each other). You also untick the fertilizers you cannot get in your area and the app recalculates with the ones you can.
With the Advanced package you capture your water's EC with a conductivity meter and the app uses it as a guardrail against salts. And if you do have a lab analysis, Pro mode gives you the full calculation with your real water.
Can I upgrade my package later?
Yes, whenever you want: you keep the same code and your data. The upgrade (Basic → Advanced → Pro) activates on your next start with internet, and you only pay the difference prorated to the time left on your license.
How many devices does each license include?
Basic, Advanced and Pro Grower include 1 device. The Agronomist/Consultant plan includes 3 devices and lets you sign reports for your own clients. Need more devices? It is adjusted with your same code.
Can I move my data to another phone?
Yes. The app backs up and restores your data —waters, saved soil analyses, history and folders— in a file you send over WhatsApp or email and restore on another device. For security, the backup does not include the license: that stays tied to your code and your devices, so you move your data without risking your subscription.
What do I see in the DEMO, and what comes with the license?
In the DEMO you see the engine really working: the grams of each fertilizer, the salinity meter and the honest gate warning you when something does not add up. What comes with your license is full traceability: each nutrient's target for your crop and stage, how much of it your water already provides and how much the fertilizers add. Those targets are years of lab and field work behind the app — which is why they go to whoever pays, not to whoever stops by to look.
What does "professional recipe not released" mean?
It is our honest gate at work: every recipe comes out with its explicit status. Professional recipes are in field validation (trial in progress); the app shows you the full calculation, its traceability and exactly what is missing to release it — instead of faking a certainty that does not exist yet. It is also why the 14-day refund is no questions asked.
How do I receive my code?
You pay online with a card, Mercado Pago or PayPal and your activation code arrives by email automatically.
Is there a refund guarantee?
Yes, a 14-day no-questions-asked refund from the moment your license is activated.
Why is it annual and not monthly?
Because your crop's real cycle is the season, not the month. The annual subscription saves you from reactivating mid-cycle and is the price the plans on this page are calculated with.
Do you issue an invoice?
Yes, a Mexican CFDI made out to your company or your consultancy. Every price already includes VAT, so what you see on the page is what you pay: the invoice breaks out the net amount and the tax. For a consultancy or a lab that means the expense is deductible and the VAT creditable. Ask for it on WhatsApp with your tax details after paying.
What happens when the year ends?
Nothing automatic: we do not store your card and we do not charge you on our own. We email you before the expiry date and you decide whether to renew. If you do not renew, the app still opens in Demo mode and your history is not deleted: your waters, your analyses and your calculations stay there for whenever you come back.
What does "Founder Edition" mean?
That we are opening access in stages and still add features often. The launch prices you see on this page belong to this stage: when it ends, they go up to their list price.
The calculation engine is not preliminary: it is validated against 13 reference cases and in use in the field. What keeps growing is everything around it.
I am an advisor working with several ranches. Which plan suits me?
The Agronomist plan. It is the only one where the report comes out with your name, your professional licence number and your logo, so your client receives a document signed by you and not a screenshot. It includes 3 devices and folders by client and by ranch. Use it on a single ranch in your portfolio and it has already paid for itself.
Who developed the calculations?
Dr. rer. nat. Dipl.-Chem. Andrés León Ohl, a chemist. The nutritional targets are anchored to reference cases, with field validation in progress, and the app reads your soil analysis according to the criteria of Mexico's NOM-021-RECNAT-2000.
The agronomic judgement is always signed by the advisor holding the professional licence: we provide the chemistry and the calculation.
Have a question that is not here? Our team answers on WhatsApp.
Ask nowThe full manual,
step by step.
Want to see everything before you start? The user manual explains how to install the app, activate your license, choose Field or Pro mode, enter your water and soil analysis, read the result and use the tools. It reads on your phone, with nothing to download.
Stop guessing your
fertigation recipe.
Try the free DEMO mode and, when you are ready, activate your license with your own water. From the Nutrisurco® team.