# TT Signals vs Harmony ONETracker

The clearest difference is update cadence: Harmony ONETracker at every 3 weeks against TT Signals's every 4 months. Harmony ONETracker also leads on iOS requirement (13.0 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.

TT Signals ships an update every 4 months, Harmony ONETracker every 3 weeks. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | TT Signals | Harmony ONETracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Size | 27 MB | 61 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [CMH GROUP LTD EOOD](https://appshunter.io/developer/1705210274) | [Ivan Basim](https://appshunter.io/developer/1801497967) |

## What reviewers say

### TT Signals

[App page](https://appshunter.io/ios/app/tt-signals/id6504525660)

**Features:** macOS Compatibility

**In-app purchases:** none


### Harmony ONETracker

[App page](https://appshunter.io/ios/app/harmony-onetracker/id6743122081)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TT Signals free?

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

### Is Harmony ONETracker free?

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

### Do TT Signals or Harmony ONETracker have ads?

Neither TT Signals nor Harmony ONETracker shows ads.

### Which is updated more often, TT Signals or Harmony ONETracker?

TT Signals ships an update every 4 months, and Harmony ONETracker every 3 weeks. Most recently, TT Signals was updated on October 3, 2026 and Harmony ONETracker on October 7, 2026.

---

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