Comparison

Impress vs Gym Chrono Timer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Impress

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
Read full description

The Impress App is designed to simplify the lives of our patients undergoing clear aligner orthodontic treatment and allow our medical team to better monitor their progress and maximize the efficiency of their treatment. Straightening your teeth has never been easier, quicker or more convenient! Make the most of your invisible aligners treatment with the Impress App: - Take photos of your smile when the app prompts you to and share it with your orthodontist - Get guidance through every step of the treatment process - Receive reminders and recommendations from your designated orthodontist - Get notifications when it’s time to change your aligners - Chat directly with your orthodontist, anytime, from any place - Save time and avoid in-clinics visit (unless you prefer to) Important: The Impress App is intended for use under the supervision of your Impress orthodontist experts. Our Patient Care team will provide you access to the app as soon as you start your treatment. Our goal is to provide an app which meets your needs. Remember that to achieve the final result you must follow your orthodontist's instructions on the correct use of your aligners. Want to know more about Impress? Like us on Facebook: https://www.facebook.com/Smile2Impress/ Follow us on Instagram: https://www.instagram.com/impress_uk Subscribe to our YouTube channel: https://www.youtube.com/channel/UCQsPEMzsqiNG3eohsiv2pRQ/about Visit our website: https://smile2impress.com/uk Enjoy our blog articles on: https://smile2impress.com/uk/blog Our goal is to provide an app which meets your needs and makes your treatment process easier and more engaging. We’d love to hear from you so don’t hesitate to send us your feedback at app_support@smile2impress.com

About

Gym Chrono Timer

Features
Read full description

Train your way with Gym Chrono — a simple interval timer for HIIT, Tabata, circuit training, gym sessions and home workouts. Set your work time, rest time and number of rounds, then focus on the exercise. A preparation countdown, clear color-coded phases and audio cues keep you moving without constantly checking the screen. WHY GYM CHRONO • Fast setup for work, rest and rounds • Preparation countdown before training starts • Clear WORK and REST screens • Audio cues for phase changes • Pause, resume, stop and repeat controls • Reuse your last timer settings • Designed for iPhone, iPad and Apple Watch • Available in 11 languages Gym Chrono works without an account. Your workout settings stay on your device. Prefer a distraction-free experience? Remove ads with a one-time in-app purchase and restore your purchase whenever needed. Great for HIIT, Tabata, circuit training, boxing rounds, stretching, mobility and any workout built around timed work and rest.

Screenshots

Impress4 screens
Gym Chrono Timer4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
Impress versus Gym Chrono Timer: the parameters behind the verdict, then further details
ParameterImpressGym Chrono Timer
PriceFreeFree
Rating4.5 (262 ratings) — better—
Positive reviews31.3% of reviews—
Number of ratings262 — better—
Update frequencyFortnightlyEvery 2 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhoneiPhone, iPad, iPod, Apple Watch — better
Requires iOS16.415.0 — better
Further details — not scored
Size144 MB33 MB
Age rating12+4+
DeveloperSmile2Impress SLOleksii Kapustnyk

In-app purchases

None

Impress

No in-app purchases

1 purchases

Gym Chrono Timer

One-time1
  • Remove Ads Forever$0.99

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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