# CPT Explorer vs Therapy Tracker

The clearest difference is update cadence: Therapy Tracker at every 8 days against CPT Explorer's every 3 months. CPT Explorer's advantage is iOS requirement (13.0 vs 15.1). 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.

CPT Explorer ships an update every 3 months, Therapy Tracker every 8 days. The most recent releases landed on October 5, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | CPT Explorer | Therapy Tracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 8 days** |
| Size | 133 MB | 37 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Palo Alto Veterans Institute for Research](https://appshunter.io/developer/1292950620) | [W David O'Byrne](https://appshunter.io/developer/620112271) |

## What reviewers say

### CPT Explorer

[App page](https://appshunter.io/ios/app/cpt-explorer/id6751294000)

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

**In-app purchases:** none


### Therapy Tracker

[App page](https://appshunter.io/ios/app/therapy-tracker-session-prep/id6763611879)

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

**In-app purchases:** none


## Frequently asked questions

### Is CPT Explorer free?

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

### Is Therapy Tracker free?

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

### Do CPT Explorer or Therapy Tracker have ads?

Neither CPT Explorer nor Therapy Tracker shows ads.

### Which is updated more often, CPT Explorer or Therapy Tracker?

CPT Explorer ships an update every 3 months, and Therapy Tracker every 8 days. Most recently, CPT Explorer was updated on October 5, 2026 and Therapy Tracker on October 2, 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.*