# Probe Schedule Mobile vs Harvista Calibration Tool

The clearest difference is update cadence: Harvista Calibration Tool at every 3 months against Probe Schedule Mobile's every 9 months. Probe Schedule Mobile's advantage is iOS requirement (11.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Probe Schedule Mobile ships an update every 9 months, Harvista Calibration Tool every 3 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Probe Schedule Mobile | Harvista Calibration Tool |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (5 ratings)](https://appshunter.io/ios/app/probe-schedule-mobile/id909030857/reviews)** | — |
| Number of ratings | **5** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 60 MB | 22 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AgVerdict, Inc.](https://appshunter.io/developer/1203416346) | [AgroFresh Solutions, Inc.](https://appshunter.io/developer/1475831186) |

## What reviewers say

### Probe Schedule Mobile

[App page](https://appshunter.io/ios/app/probe-schedule-mobile/id909030857)

Access irrigation and probe data from your probeschedule.com account. View detailed information conveniently on your mobile device.

**Highlights:** View irrigation data, Access probe data, Syncs with probeschedule.com account, Mobile convenience

**Features:** macOS Compatibility

**In-app purchases:** none


### Harvista Calibration Tool

[App page](https://appshunter.io/ios/app/harvista-calibration-tool/id1508371898)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Probe Schedule Mobile free?

Probe Schedule Mobile is free to download, with no in-app purchases.

### Is Harvista Calibration Tool free?

Harvista Calibration Tool is free to download, with no in-app purchases.

### Do Probe Schedule Mobile or Harvista Calibration Tool have ads?

Neither Probe Schedule Mobile nor Harvista Calibration Tool shows ads.

### Which is updated more often, Probe Schedule Mobile or Harvista Calibration Tool?

Probe Schedule Mobile ships an update every 9 months, and Harvista Calibration Tool every 3 months. Most recently, Probe Schedule Mobile was updated on November 1, 2026 and Harvista Calibration Tool on November 3, 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.*