# Amp Developmentally Delayed vs Crest Physical Therapy

The clearest difference is rating: Amp Developmentally Delayed at 3.0 against Crest Physical Therapy's 2.0. Amp Developmentally Delayed also leads on update cadence (every 3 months vs every 13 months) and iOS requirement (13.0 vs 15.1). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Amp Developmentally Delayed holds the better App Store score, 3.0 against 2.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Amp Developmentally Delayed ships an update every 3 months, Crest Physical Therapy every 13 months. The most recent releases landed on October 13, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Amp Developmentally Delayed | Crest Physical Therapy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/amp-developmentally-delayed/id1530759847/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/crest-physical-therapy/id1613195642/reviews) |
| Number of ratings | **2** | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 13 months |
| Monetization | Free | Free |
| Size | 38 MB | 44 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Americana Corporation](https://appshunter.io/developer/1530759849) | [Micheletti Physical Therapy PC](https://appshunter.io/developer/1613195644) |

## What reviewers say

### Amp Developmentally Delayed

[App page](https://appshunter.io/ios/app/amp-developmentally-delayed/id1530759847)

This cloud-based application streamlines processes for developmentally delayed programs. Developed by a company with 25 years of healthcare software experience, it aims to enhance program efficiency and effectiveness.

**Highlights:** Cloud-based solution, Streamlined processes, Enhanced program efficiency, User-friendly interface, Tailored for developmentally delayed programs

**Features:** macOS Compatibility

**In-app purchases:** none


### Crest Physical Therapy

[App page](https://appshunter.io/ios/app/crest-physical-therapy/id1613195642)

Access your personalized home exercise program with HD instructional videos. Securely message your provider, track progress with awards, and manage appointments. Integrates with your iPhone's Health app for activity monitoring.

**Highlights:** Personalized Home Exercise Program, HD Instructional Videos, Secure Messaging with Provider, Progress Tracking with Awards, Appointment Booking, Health App Integration

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Amp Developmentally Delayed free?

Amp Developmentally Delayed is free to download, with no in-app purchases.

### Is Crest Physical Therapy free?

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

### Which has better reviews, Amp Developmentally Delayed or Crest Physical Therapy?

Amp Developmentally Delayed is rated higher. Amp Developmentally Delayed averages 3.0 out of 5 from 2 ratings, while Crest Physical Therapy averages 2.0 from 1 ratings.

### Do Amp Developmentally Delayed or Crest Physical Therapy have ads?

Neither Amp Developmentally Delayed nor Crest Physical Therapy shows ads.

### Which is updated more often, Amp Developmentally Delayed or Crest Physical Therapy?

Amp Developmentally Delayed ships an update every 3 months, and Crest Physical Therapy every 13 months. Most recently, Amp Developmentally Delayed was updated on October 13, 2026 and Crest Physical Therapy on October 14, 2026.

---

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