# Optimize Business Systems vs ElkCallMaster

The clearest difference is in-app purchases: Optimize Business Systems at none against ElkCallMaster's 1. Optimize Business Systems also leads on ads (none vs shown). ElkCallMaster's advantage is update cadence (fortnightly vs every 3 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. ElkCallMaster sells 1 in-app purchase, starting at $49.99 per year. Optimize Business Systems asks for nothing beyond the download.

Optimize Business Systems ships an update every 3 months, ElkCallMaster fortnightly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Optimize Business Systems | ElkCallMaster |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.3 (3 ratings)](https://appshunter.io/ios/app/elkcallmaster/id6761446175/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | — | Ad-supported |
| Size | 17 MB | 88 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Optimize Business Systems](https://appshunter.io/developer/1843123814) | [WildToneLabs LLC](https://appshunter.io/developer/1889713081) |

## What reviewers say

### Optimize Business Systems

[App page](https://appshunter.io/ios/app/optimize-business-systems/id6753804025)

**Features:** macOS Compatibility

**In-app purchases:** none


### ElkCallMaster

[App page](https://appshunter.io/ios/app/elkcallmaster/id6761446175)

Master realistic elk sounds and improve your calling technique with this interactive training system. Practice a variety of elk vocalizations, from bugles to mews, and build confidence for the field. Designed for hunters of all levels, it offers a structured approach to refine your skills.

**Highlights:** Elk call training and practice, Bull, cow, and calf sound education, Calling technique guidance, Sound accuracy practice tools, Hunting-focused field scenarios

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Yearly | $49.99 | per year |


## Frequently asked questions

### Is Optimize Business Systems free?

Optimize Business Systems is free to download, with no in-app purchases.

### Is ElkCallMaster free?

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

### Do Optimize Business Systems or ElkCallMaster have ads?

ElkCallMaster shows ads; Optimize Business Systems does not.

### Which is updated more often, Optimize Business Systems or ElkCallMaster?

Optimize Business Systems ships an update every 3 months, and ElkCallMaster fortnightly. Most recently, Optimize Business Systems was updated on October 30, 2026 and ElkCallMaster on October 31, 2026.

---

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