# Impress vs Gym Chrono Timer

The clearest difference is in-app purchases: Impress at none against Gym Chrono Timer's 1. Impress also leads on ads (none vs shown). Gym Chrono Timer's advantage is update cadence (every 2 days vs fortnightly) and device support (4 vs 1). On price and iOS requirement there is nothing between them.

Both are free to download. Gym Chrono Timer sells 1 one-off in-app purchase. Impress asks for nothing beyond the download.

Impress ships an update fortnightly, Gym Chrono Timer every 2 days. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Impress | Gym Chrono Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (262 ratings)](https://appshunter.io/ios/app/impress/id1549666197/reviews)** | — |
| Number of ratings | **262** | — |
| Positive reviews | 31.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | Free | — |
| Size | 144 MB | 33 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 12+ | 4+ |
| Developer | [Smile2Impress SL](https://appshunter.io/developer/1549666199) | [Oleksii Kapustnyk](https://appshunter.io/developer/1860699582) |

## What reviewers say

### Impress

[App page](https://appshunter.io/ios/app/impress/id1549666197)

This app facilitates clear aligner orthodontic treatment by allowing patients to track progress and communicate with their orthodontist. It provides guidance, reminders, and photo submission features to streamline the straightening process and reduce in-clinic visits.

**Highlights:** Photo submission for progress tracking, Step-by-step treatment guidance, Orthodontist reminders and recommendations, Aligner change notifications, Direct chat with orthodontist, Reduced in-clinic visits

**Features:** Apple Wallet, Vision Pro support

**In-app purchases:** none


### Gym Chrono Timer

[App page](https://appshunter.io/ios/app/gym-chrono-timer/id6760352016)

**Features:** Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads Forever | $0.99 | one-time |


## Frequently asked questions

### Is Impress free?

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

### Is Gym Chrono Timer free?

Gym Chrono Timer is free to download, with in-app purchases available.

### Do Impress or Gym Chrono Timer have ads?

Gym Chrono Timer shows ads; Impress does not.

### Which is updated more often, Impress or Gym Chrono Timer?

Impress ships an update fortnightly, and Gym Chrono Timer every 2 days. Most recently, Impress was updated on November 7, 2026 and Gym Chrono Timer on November 5, 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.*