# Interval Timer (Simple) vs CarboTracker

The clearest difference is update cadence: Interval Timer (Simple) at weekly against CarboTracker's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Interval Timer (Simple) sells 1 one-off in-app purchase and CarboTracker sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Interval Timer (Simple) ships an update weekly, CarboTracker every 3 weeks. The most recent releases landed on October 7, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Interval Timer (Simple) | CarboTracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Size | 28 MB | 121 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Domett Xing](https://appshunter.io/developer/1876098022) | [Toby Dunn](https://appshunter.io/developer/1880235129) |

## What reviewers say

### Interval Timer (Simple)

[App page](https://appshunter.io/ios/app/interval-timer-simple/id6758968811)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Purchase | $6.99 | one-time |


### CarboTracker

[App page](https://appshunter.io/ios/app/carbotracker/id6759691541)

**Features:** macOS Compatibility, Family Sharing, Apple Wallet, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Net Carb Tracker Pro - MONTHLY | $1.99 | per month |
| Net Carb Tracker Pro - ANNUAL | $19.99 | per year |
| 25 Bonus AI Searches | $0.99 | one-time |


## Frequently asked questions

### Is Interval Timer (Simple) free?

Interval Timer (Simple) is free to download, with in-app purchases available.

### Is CarboTracker free?

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

### Do Interval Timer (Simple) or CarboTracker have ads?

Neither Interval Timer (Simple) nor CarboTracker shows ads.

### Which is updated more often, Interval Timer (Simple) or CarboTracker?

Interval Timer (Simple) ships an update weekly, and CarboTracker every 3 weeks. Most recently, Interval Timer (Simple) was updated on October 7, 2026 and CarboTracker on October 9, 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.*