# FS Yield Estimator vs NPK BlendForm

The clearest difference is rating: NPK BlendForm at 5.0 against FS Yield Estimator's 3.0. NPK BlendForm also leads on update cadence (every 5 days vs every 4 months). FS Yield Estimator's advantage is in-app purchases (none vs 1) and ratings volume (5 vs 1). On price, ads and device support there is nothing between them.

Both are free to download. NPK BlendForm sells 1 in-app purchase, starting at $299.99 per year. FS Yield Estimator asks for nothing beyond the download.

NPK BlendForm holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: FS Yield Estimator has 5 ratings behind it against 1, so its average is the more settled of the two.

FS Yield Estimator ships an update every 4 months, NPK BlendForm every 5 days. The most recent releases landed on October 20, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | FS Yield Estimator | NPK BlendForm |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (5 ratings)](https://appshunter.io/ios/app/fs-yield-estimator/id999053779/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/npk-blendform/id6802868083/reviews)** |
| Number of ratings | **5** | 1 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 days** |
| Monetization | **Free** | Subscription |
| Size | 65 MB | 5 MB |
| Requires iOS | **15** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [GROWMARK, Inc.](https://appshunter.io/developer/913994084) | [AgriBlend Technologies LLC](https://appshunter.io/developer/6802868085) |

## What reviewers say

### FS Yield Estimator

[App page](https://appshunter.io/ios/app/fs-yield-estimator/id999053779)

Calculate estimated crop yields directly on your iOS device. Input key metrics like ear kernel length and girth, plant population, and kernels per bushel. The app also uses GPS to georeference each estimation for advanced reporting.

**Highlights:** Estimate crop yields, Input ear kernel length and girth, Calculate plant population, Determine kernels per bushel, Georeference estimations with GPS, Advanced online reporting for FS members

**In-app purchases:** none


### NPK BlendForm

[App page](https://appshunter.io/ios/app/npk-blendform/id6802868083)

This professional tool assists fertilizer dealers and agronomists in creating, pricing, and documenting custom fertilizer blends. It offers flexible calculation modes, supports various nutrient types, and helps manage customer data and blend tickets. Generate professional printable documents for clients and operators.

**Highlights:** Custom fertilizer formulation, Flexible calculation modes, Nutrient and micronutrient support, Cost, price, and margin calculation, Customer and blend ticket management, Printable blend document generation, Data backup and export

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NPK Blendform Annual | $299.99 | per year |


## Frequently asked questions

### Is FS Yield Estimator free?

FS Yield Estimator is free to download, with no in-app purchases.

### Is NPK BlendForm free?

NPK BlendForm is free to download, with in-app purchases available.

### Which has better reviews, FS Yield Estimator or NPK BlendForm?

NPK BlendForm is rated higher. FS Yield Estimator averages 3.0 out of 5 from 5 ratings, while NPK BlendForm averages 5.0 from 1 ratings.

### Do FS Yield Estimator or NPK BlendForm have ads?

Neither FS Yield Estimator nor NPK BlendForm shows ads.

### Which is updated more often, FS Yield Estimator or NPK BlendForm?

FS Yield Estimator ships an update every 4 months, and NPK BlendForm every 5 days. Most recently, FS Yield Estimator was updated on October 20, 2026 and NPK BlendForm on October 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*