Comparison

Countdown Stack vs Synto

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

Head to head
About

Countdown Stack

Easily track important upcoming events and personal goals. This app provides a clean interface to visualize your milestones, from birthdays to deadlines, across all your Apple devices. Unlock unlimited tracking and advanced features with an in-app purchase.

Highlights
  • Event and goal tracking
  • Clean and modern interface
  • Cross-device synchronization
  • Beautifully displayed countdowns
  • Unlimited countdowns (in-app purchase)
Features
Read full description

Your favorite events and goals are always just a glance away. Countdown Stack helps you stay organized and inspired by keeping track of what matters most, from birthdays and vacations to launches, anniversaries, and important deadlines. Designed with a clean and modern interface, it brings your upcoming moments to life across iPhone, iPad, Mac, and Apple Watch. Each countdown is beautifully displayed, letting you track your moments effortlessly wherever you are. Whether you’re planning a big day or simply looking forward to the weekend, Countdown Stack keeps your milestones front and center. Three countdowns are included for free, and you can unlock unlimited countdowns and additional features through an in-app purchase. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula

About

Synto

Access leading AI models for specialized assistance in education, career, business, and personal organization. Engage in natural conversations with AI tailored to your needs, all within a user-friendly interface that prioritizes your data privacy.

Highlights
  • Access multiple advanced AI models
  • Specialized AI assistants
  • Natural language conversation
  • Data privacy and security
  • User-friendly interface
  • Free to try
Features
Read full description

Synto puts the world's best artificial intelligence models in the palm of your hand, no hassle, no technical jargon. Chat with specialized assistants for education, career, business, personal organization, and much more. Each assistant was built to help you in a specific way, with clear and practical answers. MULTIPLE AI MODELS Access GPT, Claude, Gemini, DeepSeek, xAI and other cutting-edge models in a single app. You choose which one to use for each conversation. SPECIALIZED ASSISTANTS - Education & Learning — get answers, take quizzes and learn any subject - Jobs & Career — build your resume and prepare for interviews - Business & Entrepreneurship — marketing strategies and growth - Personal Organization — plan your routine, finances and daily tasks - Digital Inclusion — technology explained in a way everyone understands SIMPLE TO USE Ask questions the way you naturally talk, as if chatting with a friend. The AI understands and responds in a direct, hassle-free way. YOUR DATA PROTECTED Privacy and security first. Your conversations are yours. Try it for free. No credit card required.

Screenshots

Countdown Stack4 screens
Synto4 screens

Verdict

The call

The clearest difference is in-app purchases: Synto at none against Countdown Stack's 2. Synto also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (15.1 vs 26.0). On price, rating, review sentiment and ratings volume 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. Countdown Stack sells 2 in-app purchases, starting at $0.29 per month. Synto asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Countdown Stack against 5.0 for Synto. Both are backed by a comparable volume of ratings — 5 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Countdown Stack ships an update every 2 months, Synto every 3 weeks. The most recent releases landed on September 24, 2026 and October 12, 2026 respectively.

Scorecard4 real differences · 6 level
Countdown Stack versus Synto: the parameters behind the verdict, then further details
ParameterCountdown StackSynto
PriceFreeFree
Rating5.0 (5 ratings)5.0 (2 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings5 — better2
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS26.015.1 — better
Further details — not scored
Size33 MB72 MB
Age rating4+4+
DeveloperDmitry KhotinskiyDJP TECHNOLOGY LTDA

Customer experience

Countdown Stack

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Synto

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Countdown Stack

Subscriptions2
  • Premium (Monthly)$0.291 Month
  • Premium (Annual)$2.491 Year
None

Synto

No in-app purchases

Questions

Is Countdown Stack free?
Countdown Stack is free to download, with in-app purchases available.
Is Synto free?
Synto is free to download, with no in-app purchases.
Which has better reviews, Countdown Stack or Synto?
Countdown Stack and Synto are both rated 5.0 out of 5 on the App Store, from 5 and 2 ratings respectively.
Do Countdown Stack or Synto have ads?
Neither Countdown Stack nor Synto shows ads.
Which is updated more often, Countdown Stack or Synto?
Countdown Stack ships an update every 2 months, and Synto every 3 weeks. Most recently, Countdown Stack was updated on September 24, 2026 and Synto on October 12, 2026.

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