# Walnut TMS vs zero

The clearest difference is update cadence: Walnut TMS at every 2 days against zero's every 4 months. 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.

Walnut TMS ships an update every 2 days, zero every 4 months. The most recent releases landed on September 28, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Walnut TMS | zero |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 4 months |
| Size | 12 MB | 34 MB |
| Requires iOS | 14.5 | **13.4** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Nikhil Karkare](https://appshunter.io/developer/1243657426) | [Cole Stites-Clayton](https://appshunter.io/developer/1734279918) |

## What reviewers say

### Walnut TMS

[App page](https://appshunter.io/ios/app/walnut-tms/id6467182681)

**Features:** macOS Compatibility

**In-app purchases:** none


### zero

[App page](https://appshunter.io/ios/app/zero-carbon-agent/id6478878756)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Walnut TMS free?

Walnut TMS is free to download, with no in-app purchases.

### Is zero free?

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

### Do Walnut TMS or zero have ads?

Neither Walnut TMS nor zero shows ads.

### Which is updated more often, Walnut TMS or zero?

Walnut TMS ships an update every 2 days, and zero every 4 months. Most recently, Walnut TMS was updated on September 28, 2026 and zero on October 18, 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.*