Comparison

Time’s Up! Timer (VPP) vs Kern

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

Head to head
About

Time’s Up! Timer (VPP)

This app offers a visually engaging countdown timer designed for various uses, from managing work breaks and children's activities to focusing on tasks. It features unique visual styles that reveal or pixelate photos as time elapses, making time management more interactive and fun.

Highlights
  • Visual countdown timer
  • Photo reveal and pixelate styles
  • Customizable alert sounds and colors
  • iCloud timer synchronization
  • Live Activities support
  • Guided Access for kids
  • AirPlay and tvOS support
Read full description

Time’s Up! is a fun, visual timer that you’ll actually want to use. Whether it’s for you, your kids, or someone else, Time’s Up! will make counting down much more engaging. Timers can be used at work and at home, whether you’re making sure you take a break or telling kids it’s bedtime. Timers exist everywhere, but none of them are fun and visually appealing — and that can be important when you’re dealing with kids big and small! Time’s Up! has the features you need to make time fun again. ——————— What’s the difference between “Time’s Up! — Visual Timer” and “Time’s Up! Timer (VPP)”? The free-to-download version of Time’s Up! lets you try the app five times before upgrading via in-app purchase. “Time’s Up! Timer (VPP)” is the same app but available paid-upfront with no limits in the app itself. “Time’s Up! Timer (VPP)” exists so educators can purchase the app through Apple’s Volume Purchase Program (VPP) for Education. It also excludes any third-party frameworks and analytics from the app. ——————— Time’s Up! isn’t just for kids and workaholics. The possibilities are endless: • Adults who need to set timers to stop them from working for too long without a break. • Kids who don’t want to do their homework but can be convinced to work in smaller chunks. • Setting reading or other activity timers before bed time. • Helping bigger kids focus on an activity for a set amount of time. • Setting timers for exercises — put Time’s Up! on your TV screen using AirPlay and turn a timer into the focal point for your exercise group. • Anything that’s based on a specific amount of time! What makes a timer fun? Time’s Up! has 5 fun styles to choose from, including: • “Reveal” a photo from your Photo Library as the seconds tick down. • “Pixelate” makes a photo more clear as a timer gets closer to completion. • “Puzzle” breaks a photo into jigsaw puzzle pieces and then puts the pieces into their places as time progresses. Alternatively, there are more traditional clock faces if you just want a simple timer. Timers can be customized with their own alert sound and color, too. Other key features include: • Sync your timers between iPhone, iPad, Mac, and Apple TV using iCloud. • See your timers on your Lock Screen, Dynamic Island, and Apple Watch with Live Activities (requires iOS 18). • Guided Access to prevent kids from switching apps and changing timers, making sure only you have the power to control time. • Airplay and tvOS support so you can put a timer up on a TV screen. • Get audio updates each minute or countdown the last 10 seconds. • On macOS, you can float the timer window above other apps so it’s always visible. Time’s Up! has no ads or data trackers. We believe your data is your own and we don’t collect any of it.

About

Kern

This app helps you retain knowledge from books you've read by creating interactive flashcards. It uses spaced repetition to resurface information as it begins to fade, supporting both fiction and non-fiction content. Review your library offline and see an honest picture of what you remember.

Highlights
  • Spaced repetition flashcards
  • Supports fiction and non-fiction
  • Offline review capability
  • Interactive cards
  • No account required
  • Book fading visualization
Features
Read full description

You spent ten hours reading a book. A month later, the sharpest ideas are fuzzy, the characters blur, and the moments that moved you are already slipping away. Kern keeps the books you finish alive. Pick a book you've read and it becomes a deck of sharp, swipeable cards. For non-fiction, Kern brings back the key ideas, examples, arguments, and surprising connections. For fiction, Kern revisits the characters, relationships, turning points, themes, motifs, and settings that made the story stay with you. Then spaced repetition takes over, bringing cards back as each book begins to fade. HOW IT WORKS 1. Search for a book you've finished, or pick one from the list. No uploads, highlights, or homework. 2. Kern creates a deck built to bring that specific book back to mind. 3. Spend five minutes a day. Cards from across your library come round together, and the books you've neglected come back first. KERN COMES TO YOU - Reminders that carry an idea. On days you don't open Kern, an idea from the book you're losing arrives at the time you choose. Press and hold it to see the whole card, then tap Got it without opening the app. - Home Screen widgets. Answer a card or a quick quiz, or see which book is fading, right on your Home Screen. - Lock Screen widgets. The book fading most, and how much of your shelf is still fresh. SHARE WHAT STUCK Turn any idea into a poster for your story or feed. Or challenge a friend: two claims from the book and one that's made up. Which one? FICTION AND NON-FICTION Fiction and non-fiction receive different kinds of cards because remembering a novel is not the same as remembering a business book. Fiction cards contain full-book spoilers and are intended for books you've already finished. Reminders, widgets and posters only use ideas that don't give the plot away, because anyone can see them. WHY READERS PICK KERN - Cards for both fiction and non-fiction - Your whole library in one feed - Interactive cards that check what actually stuck - Original, paraphrased cards, not excerpts and not a substitute for reading - Your library and progress come back on a new phone through iCloud - Review anywhere, offline once a deck is ready - No account and no sign-up THE WALL Every book you add lives on the Wall. Review it and it stays inked. Neglect it and you can watch it fade. Switch to a list once your library grows, sorted A to Z and split into fiction and non-fiction. No streaks, guilt trips, or leaderboards. Just an honest picture of what is still in your head. PRICING Your first book is free, with no payment required. Continue with Kern Plus for unlimited books, or unlock an individual book with a one-time purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. You can manage or cancel them in your App Store account settings. Terms of Use: https://kern.cards/terms Privacy Policy: https://kern.cards/privacy Read on.

Screenshots

Time’s Up! Timer (VPP)4 screens
Kern4 screens

Verdict

The call

The clearest difference is price: Kern at Free against Time’s Up! Timer (VPP)'s $5.99. Kern also leads on rating (5.0 vs 4.5). Time’s Up! Timer (VPP)'s advantage is in-app purchases (none vs 3) and device support (5 vs 1). On review sentiment, update cadence and ads 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

Kern is free to download; Time’s Up! Timer (VPP) costs $5.99 up front. Kern sells 3 in-app purchases, starting at $3.99 per month. Time’s Up! Timer (VPP) asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Kern holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 11 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Time’s Up! Timer (VPP) ships an update monthly, Kern every 3 weeks. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

Scorecard7 real differences · 3 level
Time’s Up! Timer (VPP) versus Kern: the parameters behind the verdict, then further details
ParameterTime’s Up! Timer (VPP)Kern
Price$5.99Free — better
Rating4.5 (11 ratings)5.0 (3 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings11 — better3
Update frequencyMonthlyEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPod, Mac, Apple TV — betteriPhone
Requires iOS15.4 — better17.0
Further details — not scored
Size60 MB23 MB
Age rating4+4+
DeveloperOverdesigned, LLCQuantum IT

Customer experience

Time’s Up! Timer (VPP)

All ratings10 ratings
Positive80.0%
Neutral10.0%
Negative10.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Kern

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Time’s Up! Timer (VPP)

No in-app purchases

3 purchases

Kern

Subscriptions2
  • Kern Plus (Monthly)$3.991 Month
  • Kern Plus (Annual)$39.991 Year
One-time1
  • Unlock One Book$1.99

Questions

Is Time’s Up! Timer (VPP) free?
Time’s Up! Timer (VPP) costs $5.99, with no in-app purchases.
Is Kern free?
Kern is free to download, with in-app purchases available.
Which has better reviews, Time’s Up! Timer (VPP) or Kern?
Kern is rated higher. Time’s Up! Timer (VPP) averages 4.5 out of 5 from 11 ratings, while Kern averages 5.0 from 3 ratings.
Do Time’s Up! Timer (VPP) or Kern have ads?
Neither Time’s Up! Timer (VPP) nor Kern shows ads.
Which is updated more often, Time’s Up! Timer (VPP) or Kern?
Time’s Up! Timer (VPP) ships an update monthly, and Kern every 3 weeks. Most recently, Time’s Up! Timer (VPP) was updated on November 4, 2026 and Kern on October 31, 2026.

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