# HarvestCalc

> Combine harvester grain loss, productivity, and cost calculation tool. (iPhone/iPad app by RB & CL Gribble.)

- Source: https://appshunter.io/ios/app/harvestcalc/id701867894 (this page in markdown: same URL + `.md`)
- Developer: [RB & CL Gribble](https://appshunter.io/developer/1554426721)
- Category: Productivity, Business
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.0 · 8 MB
- Languages: American English
- Released: 2013-09-24
- Data updated: 2026-06-01
- Monetization: subscription
- User reviews in markdown: https://appshunter.io/ios/app/harvestcalc/id701867894/reviews.md

## What is HarvestCalc?

HarvestCalc - The quick & easy way to calculate grain loss, productivity & efficiency of your combine harvester.

• With just a few steps you can calculate your combine harvesters grain loss, either as a percentage of total yield, or weight/area, or in $/area. More importantly, Harvestcalc can calculate your net harvesting cost by weight ($/t) or cost by area ($/ha).
• Use Harvestcalc to check the effectiveness of those adjustments you make to your combine harvester to minimise grain loss whilst maximising your combine harvesters efficiency & productivity.
• Use Harvestcalc to calibrate your combine harvesters grain loss monitors to make sense of what your grain loss indicator really means. 

HarvestCalc - can provide the tools for a better bottom line.

Terms of Use: https://www.termsfeed.com/live/42a373f7-d989-4408-a451-199c43526930

## Key features

- Calculate grain loss percentage, weight/area, or $/area
- Determine net harvesting cost by weight or area
- Assess combine harvester adjustment effectiveness
- Calibrate grain loss monitors
- Improve combine harvester efficiency and productivity

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| HarvestCalc | $14.99 | per year |


## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/harvestcalc/id701867894/reviews.md

### 1/5 — Crashes

*2021-11-27, version 5.0.3*

The app won’t work on the iPad, it closes when I ask for a result

### 5/5 — Excellent

*2017-11-08, version 3.1*

Well thought out app. Amazing what’s included in this app.  A must for all harvester operators trying to get the most capacity while keeping losses st a minimum.

### 5/5 — Finally a tool for header drivers!

*2013-10-04, version 1.1*

Used the app to measure grain loss with trays supplied by harvest Calc, working really well, now I know If I'm working at the most efficient rate! Must for all croppers!

## Frequently asked questions about HarvestCalc

### What is HarvestCalc used for?

HarvestCalc is used to calculate grain loss, productivity, and efficiency for combine harvesters. It helps users determine net harvesting costs and calibrate grain loss monitors to improve their farming operations.

### How does HarvestCalc calculate grain loss?

HarvestCalc can calculate grain loss as a percentage of total yield, by weight per area, or in dollars per area. This provides detailed insights into harvest performance.

### Can HarvestCalc help me understand my combine's adjustments?

Yes, HarvestCalc can be used to check the effectiveness of adjustments made to your combine harvester. This helps in minimizing grain loss and maximizing efficiency.

### What is the subscription cost for HarvestCalc?

HarvestCalc offers a subscription plan at $14.99 per year, with a 7-day free trial available. This provides access to all its features for optimizing harvest operations.

### What devices does HarvestCalc support?

HarvestCalc is currently supported on iPhones. Further platform compatibility may be added in future updates.

### How often is HarvestCalc updated?

The latest version of HarvestCalc is 6.0, which was last updated on February 9, 2026. This indicates a commitment to ongoing development and improvements.

### What is the age rating for HarvestCalc?

HarvestCalc has an age rating of 4+, making it suitable for a wide range of users. This rating suggests it contains no mature content.

### Does HarvestCalc have ads?

No, HarvestCalc does not contain advertisements. Users can utilize its features without interruption from ads.

## Version history (last 5 releases)

### 6.0 — 2026-02-09

• New weather & setting fields
• Result CSV export
• Bushel and improved metric unit handling

### 5.0.4 — 2022-12-30

iOS 16 compatibility

### 5.0.3 — 2021-10-26

• Fixed an issue where crop yields were not converting to imperial units correctly

### 5.0.2 — 2021-07-12

• Fixed an issue when graphing the percentage separator loss for "Full chop & spread" test results

### 5.0.1 — 2021-06-10

• Complete new build which includes the ability to use any sized loss trays you like.  
• Measure loss by grain count or weight, in windrow mode or full chop/spread mode, in metric or imperial
• Greater detail in graphs

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*