OpEvol vs Countdown & Memories
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OpEvol
Experience a dynamic, ever-changing display of psychedelic visuals inspired by 1960s Op Art. This app creates animated fields of geometric colors and contrasts for passive viewing or interactive play.
- Animated geometric patterns
- Op Art inspired visuals
- Psychedelic color displays
- Interactive visual play
- Air Display compatibility
Read full descriptionHide full description
Inspired by Op Art of the 1960s, OpEvol takes the geometric play of colors and contrasts and animates them into a moving field of ever-changing, optical, kinetic abstraction. It's for staring at. It's for sending to Air Display. Or an external monitor. Or a projector. It's something mesmerizing to design and watch evolve, or just leave on in the background as art. OpEvol Pro is an auto-renewing annual subscription (price shown in the app). Payment is charged to your Apple ID at purchase, and it renews automatically unless canceled at least 24 hours before the end of the period. Manage or cancel anytime in your Apple ID settings. Privacy Policy: https://muddlegeist.com/opevol/privacy Terms of Use (EULA): https://muddlegeist.com/opevol/terms
Countdown & Memories
Read full descriptionHide full description
Never miss an important moment again. Countdown App helps you track the days until your next event – whether it’s a vacation, birthday, wedding, or any special occasion that matters to you. Create beautiful countdowns for all your events in seconds. Stay focused on what matters most. From holidays and trips to personal goals and milestones – keep everything in one place. Always know exactly how much time is left. Counting down to something exciting keeps you focused and inspired. No clutter. Just a simple and intuitive countdown experience. Perfect for: • Vacations & travel • Birthdays & parties • Weddings & anniversaries • Goals & deadlines • Daily motivation Start your countdown today and never miss a special moment again. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Countdown & Memories at none against OpEvol's 1. Countdown & Memories also leads on update cadence (every 2 months vs every 22 months) and iOS requirement (18.6 vs 26.0). On price, ads and device support 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
Both are free to download. OpEvol sells 1 in-app purchase, starting at $6.99 per year. Countdown & Memories asks for nothing beyond the download.
OpEvol ships an update every 22 months, Countdown & Memories every 2 months. The most recent releases landed on August 19, 2026 and September 20, 2026 respectively.
| Parameter | OpEvol | Countdown & Memories |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 27.3% of reviews | — |
| Update frequency | Every 22 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | — |
| Devices | iPhone, iPad, Apple TV — better | iPhone, iPad |
| Requires iOS | 26.0 | 18.6 — better |
| Further details — not scored | ||
| Size | 3 MB | 53 MB |
| Age rating | 4+ | 9+ |
| Developer | Muddlegeist | Mario Fischer |
In-app purchases
OpEvol
- OpEvol Annual Subscription$6.991 Year
Countdown & Memories
No in-app purchases
