Comparison

Countdown Stack vs Sayo

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

Sayo

Record voice memos and have them instantly transcribed and organized. The app automatically extracts tasks, ideas, and events from your recordings, with options to sync with your calendar and reminders. Enjoy privacy-focused, on-device AI processing for all your notes.

Highlights
  • On-device AI transcription
  • Automatic task, idea, and event extraction
  • Sync tasks to Apple Reminders
  • Sync events to Apple Calendar
  • iCloud sync across devices
  • Siri Shortcuts integration
  • Home screen widget
Features
Read full description

Sayo turns what you say into what you have to do. Tap record and talk, the way you'd talk to a person. Sayo writes it down, then pulls out the parts that matter: the tasks, the dates, the ideas you'd otherwise forget by lunch. IT OPENS ON TODAY The first thing you see is what you actually owe: what's due before midnight, what's overdue, and who you're waiting on, gathered from every memo you've recorded. Three things, not a wall. Tick one off and it folds away. Tap any of it to jump back to the conversation it came from. IT KNOWS WHAT YOU DO Tell Sayo whether your day is showings and closings, calls and demos, jobs and quotes, or lectures and deadlines. It reads every memo that way afterward, names the property or the account in the task, and stops guessing at dates you never said out loud. ASK YOUR MEMOS Weeks later, when you can't remember which conversation it was in, just ask. "What did I promise Diego?" "What have I been putting off?" Sayo answers from your own recordings and shows you exactly which memo it came from. It never makes something up: if you didn't say it, it tells you so. WHAT YOU GET BACK - A clean summary of everything you said - Tasks, with due dates worked out from how you actually speak ("call the dentist Tuesday morning") - Events, ready to drop into your calendar - Ideas and follow-ups, kept separate from the noise BUILT FOR THINKING OUT LOUD - One tap to record, with a live transcript as you speak - Record from your wrist with the Apple Watch app - Lock Screen widget and Control Center button for a thought you'll lose in ten seconds - Siri Shortcuts, hands-free - Import audio or video you already have, or share it in from any app. An hour-long lecture or meeting goes through properly, and you can leave the app while it works. YOUR RECORDINGS, KEPT - Every recording stays, behind one row on the home screen - Search across every transcript - Trim and append to recordings; edit a transcript and re-run the AI - Lock private memos behind Face ID - Recently Deleted, with 30 days to change your mind - Share any memo as plain text, Markdown, or a formatted PDF - Export a full backup whenever you want FREE TO START Record, transcribe, and watch the full AI pipeline work on your own words before you pay for anything. Your free allowance is shown in the app before you reach it. SAYO PRO Ask your memos, unlimited memos, audio editing, the Apple Watch app, PDF and Markdown sharing, and backup export. - Monthly, $9.99, with a 7-day free trial - Annual, $49.99, save 58% - Lifetime, a one-time purchase of $49.99 at launch, if you would rather not subscribe ABOUT YOUR RECORDINGS Sayo's Cloud AI gives the best results, and it works by sending your recording to Sayo's own backend on Cloudflare to be transcribed and analyzed. It is never linked to your identity, never used for advertising, and never sold, and we keep no copy of it. You are asked before this is ever turned on, and you can switch it off in Settings at any time, in which case Sayo processes everything on your device and your audio never leaves the phone. There are no third-party analytics SDKs, no ad identifiers, and no account to create. Your memos sync through your own iCloud, so they stay yours. Terms of Use (EULA): https://0arch.io/sayo/terms Privacy Policy: https://0arch.io/sayo/privacy

Screenshots

Countdown Stack4 screens
Sayo4 screens

Verdict

The call

The clearest difference is update cadence: Sayo at weekly against Countdown Stack's every 2 months. Sayo also leads on iOS requirement (17.0 vs 26.0). On price, rating, ratings volume 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

Both are free to download. Countdown Stack sells 2 in-app purchases, starting at $0.29 per month and Sayo sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

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 Sayo. Both are backed by a comparable volume of ratings — 5 and 2 respectively.

UpkeepUpdate frequency

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

Scorecard2 real differences · 8 level
Countdown Stack versus Sayo: the parameters behind the verdict, then further details
ParameterCountdown StackSayo
PriceFreeFree
Rating5.0 (5 ratings)5.0 (2 ratings)
Positive reviews100.0% of reviews—
Number of ratings5 — better2
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, Apple WatchiPhone, iPad, Apple Watch
Requires iOS26.017.0 — better
Further details — not scored
Size33 MB4 MB
Age rating4+4+
DeveloperDmitry KhotinskiyJoseph Rodriguez

Customer experience

Countdown Stack

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

Sayo

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Countdown Stack

Subscriptions2
  • Premium (Monthly)$0.291 Month
  • Premium (Annual)$2.491 Year
3 purchases

Sayo

Subscriptions2
  • Sayo Pro Monthly7 Days trial$9.991 Month
  • Sayo Pro Annual7 Days trial$49.991 Year
One-time1
  • Sayo Pro Lifetime$199.99

Questions

Is Countdown Stack free?
Countdown Stack is free to download, with in-app purchases available.
Is Sayo free?
Sayo is free to download, with in-app purchases available.
Which has better reviews, Countdown Stack or Sayo?
Countdown Stack and Sayo are both rated 5.0 out of 5 on the App Store, from 5 and 2 ratings respectively.
Do Countdown Stack or Sayo have ads?
Neither Countdown Stack nor Sayo shows ads.
Which is updated more often, Countdown Stack or Sayo?
Countdown Stack ships an update every 2 months, and Sayo weekly. Most recently, Countdown Stack was updated on September 24, 2026 and Sayo on October 3, 2026.

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