Focus Stacks vs Upstream
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Focus Stacks
Organize your tasks and ideas with a visually appealing, card-based system. Capture everything, customize with colors, add detailed notes, and sync across devices. Never let a task or idea slip away again.
- Capture every task easily
- Customize lists with colors
- Attach detailed notes to tasks
- Automatic iCloud syncing
- Card-based design
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Unleash the power of your productivity and never let another brilliant idea or must-do task slip through the cracks again! Imagine a world where every movie you've been dying to watch, every spark of inspiration for your next groundbreaking project, and every little to-do is neatly organized, not just in your mind, but right at your fingertips. Our app is crafted for the list-makers, the planners, the doers — those who thrive on keeping life seamlessly organized both at work and at home. Dive into a digital oasis of calm with our card-based design, where clutter is banished and your tasks come to life in a visually stunning, easy-to-navigate space. Say goodbye to mental overload and hello to clear, focused stacks that are as satisfying to use as they are effective. Here's what makes Focus Stacks a must-have: • Capture every task with ease, ensuring nothing important gets forgotten. • Customize your lists with a rainbow of colors to make your productivity system not only efficient but also uniquely yours. • Attach detailed notes to your tasks, from vital phone numbers to extended thoughts, making sure every piece of information is just a tap away. • With automatic, secure syncing with iCloud, your Stacks are always up-to-date across all your devices, safeguarding your progress and ideas wherever you go.
Upstream
This AI-powered inbox automatically organizes emails, drafts replies in your unique writing style, and sends follow-ups. It learns your workflow to minimize distractions and ensure no important messages are missed.
- AI email triaging
- Personalized draft writing
- Automated follow-ups
- Self-organizing inbox
- Learns user workflow
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An AI inbox that triages itself, drafts in your voice, and follows up so you don’t have to remember to. ORGANIZE EMAILS YOUR WAY Upstream sorts, flags, and surfaces what needs your attention today. Noise gets filed away. No rules to set up or folders to maintain. It learns how you work and gets out of your way. DRAFTS IN YOUR VOICE. NOT A VOICE. Upstream writes like you. Not like AI pretending to be you. It studies how you write, how you talk to this specific person, and what the thread already sounds like, then drafts from there. The reply is waiting before you've finished reading the email. THE FOLLOW-UP WRITES ITSELF Upstream watches the threads going quiet, writes the nudge, and adds it to your inbox to send. The open loops close themselves. The ball never gets dropped.
Screenshots
Verdict
The clearest difference is price: Upstream at Free against Focus Stacks's $4.99. Upstream also leads on ratings volume (3 vs 1) and iOS requirement (15.1 vs 17.0). Focus Stacks's advantage is rating (5.0 vs 3.7). On update cadence, ads, in-app purchases 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
Upstream is free to download; Focus Stacks costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Focus Stacks holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively.
Focus Stacks ships an update weekly, Upstream every 2 weeks. The most recent releases landed on September 20, 2026 and October 2, 2026 respectively.
| Parameter | Focus Stacks | Upstream |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | 3.7 (3 ratings) |
| Positive reviews | — | 50.0% of reviews |
| Number of ratings | 1 | 3 — better |
| Update frequency | Weekly — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, Vision Pro | iPhone, iPod |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 1 MB | 87 MB |
| Age rating | 4+ | 4+ |
| Developer | Andrew Despres | Upstream Labs |
Customer experience
Focus Stacks
Upstream
In-app purchases
Focus Stacks
No in-app purchases
Upstream
No in-app purchases









