# Tracker Detect Hidden App vs HeatSig

The clearest difference is in-app purchases: HeatSig at none against Tracker Detect Hidden App's 4. HeatSig also leads on ads (none vs shown) and device support (3 vs 1). Tracker Detect Hidden App's advantage is update cadence (every 2 days vs every 3 weeks). On price and iOS requirement there is nothing between them.

Both are free to download. Tracker Detect Hidden App sells 4 in-app purchases, starting at $8.99 per 7 days. HeatSig asks for nothing beyond the download.

Tracker Detect Hidden App ships an update every 2 days, HeatSig every 3 weeks. The most recent releases landed on October 5, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Tracker Detect Hidden App | HeatSig |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 3 weeks |
| Size | 29 MB | 66 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Lennart Demeyere](https://appshunter.io/developer/1829462843) | [Heatsig Pte. Ltd.](https://appshunter.io/developer/1835618366) |

## What reviewers say

### Tracker Detect Hidden App

[App page](https://appshunter.io/ios/app/tracker-detect-hidden-app/id6749237588)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| detectWeekly | $8.99 | per 7 days |
| Tracker Detect Hidden App | $8.99 | per 7 days |
| detectMonthly | $14.99 | per month |
| detectMonthlyTrial | $15.99 | per month |


### HeatSig

[App page](https://appshunter.io/ios/app/heatsig/id6751530567)

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

**In-app purchases:** none


## Frequently asked questions

### Is Tracker Detect Hidden App free?

Tracker Detect Hidden App is free to download, with in-app purchases available.

### Is HeatSig free?

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

### Do Tracker Detect Hidden App or HeatSig have ads?

Tracker Detect Hidden App shows ads; HeatSig does not.

### Which is updated more often, Tracker Detect Hidden App or HeatSig?

Tracker Detect Hidden App ships an update every 2 days, and HeatSig every 3 weeks. Most recently, Tracker Detect Hidden App was updated on October 5, 2026 and HeatSig on October 12, 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.*