# Effizency Field vs Leadkit Inbox

The clearest difference is update cadence: Leadkit Inbox at every 6 days against Effizency Field's monthly. Leadkit Inbox also leads on iOS requirement (16.4 vs 18.0). 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.

Effizency Field ships an update monthly, Leadkit Inbox every 6 days. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Effizency Field | Leadkit Inbox |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 6 days** |
| Size | 169 MB | 60 MB |
| Requires iOS | 18.0 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Effizency](https://appshunter.io/developer/1521903032) | [Nettbureau AS](https://appshunter.io/developer/646333928) |

## What reviewers say

### Effizency Field

[App page](https://appshunter.io/ios/app/effizency-field/id1521903030)

**In-app purchases:** none


### Leadkit Inbox

[App page](https://appshunter.io/ios/app/leadkit-inbox/id6756870925)

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

**In-app purchases:** none


## Frequently asked questions

### Is Effizency Field free?

Effizency Field is free to download, with no in-app purchases.

### Is Leadkit Inbox free?

Leadkit Inbox is free to download, with no in-app purchases.

### Do Effizency Field or Leadkit Inbox have ads?

Neither Effizency Field nor Leadkit Inbox shows ads.

### Which is updated more often, Effizency Field or Leadkit Inbox?

Effizency Field ships an update monthly, and Leadkit Inbox every 6 days. Most recently, Effizency Field was updated on November 7, 2026 and Leadkit Inbox on October 30, 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.*