Steddy vs Stack
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Steddy
Plan your week, track your progress, and build healthy habits. This app helps you stay consistent with your goals through activity tracking, notes, and insightful data visualizations.
- Weekly planning
- Streak tracking
- Activity history
- Workout notes
- Data visualizations
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· Create a plan for your next week in minutes · Track your streaks and full activity history · Add notes to remember your favorite workouts · Enjoy beautiful data visualizations
Stack
This app helps you build and complete habits within a 90-day timeframe. It focuses on finishing cycles rather than perpetual tracking, with a limit of three habits at a time. The interface uses a grid to mark progress, and a widget provides quick access to daily tasks.
- Three habit limit
- 90-day completion cycles
- Manual grid progress tracking
- Home-screen widget
- One honest skip per week
- No accounts or data collection
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Stack is a habit tracker with a finish line. Three habits. Ninety days. Then it is done. The stack ships, archives, and you start fresh. The cap of three and the ninety days are not limits to pay past. They are the point. Most habit apps are built to keep you forever. Stack is built to end. - Three habits. No more. The limit is the feature. - Ninety days. A clean quarter, then a finish line. - One honest skip a week. It holds your streak but shows as a skip, never a fake fill. - The grid is the app. Ninety days of dots, filled in by hand. - A home-screen widget with today's three. Tap to mark. - Built in Liquid Glass for iOS 26. No accounts. No subscription. No analytics. Zero data collected. Pay once. It is yours. From hsla0001, an independent studio in New York. Void captures. Loop times. Protocol scores the room. Stack holds intent.
Screenshots
Verdict
The clearest difference is price: Steddy at Free against Stack's $6.99. Steddy also leads on ratings volume (84 vs 1) and device support (3 vs 1). Stack's advantage is in-app purchases (none vs 2) and update cadence (daily vs every 10 days). On rating 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
Steddy is free to download; Stack costs $6.99 up front. Steddy sells 2 in-app purchases, starting at $2.99 per month. Stack asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.9 for Steddy against 5.0 for Stack. That said, the two scores are not equally well evidenced: Steddy has 84 ratings behind it against 1, so its average is the more settled of the two.
Steddy ships an update every 10 days, Stack daily. Both last shipped on October 14, 2026.
| Parameter | Steddy | Stack |
|---|---|---|
| Price | Free — better | $6.99 |
| Rating | 4.9 (84 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 84 — better | 1 |
| Update frequency | Every 10 days | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Best chart rank | — | #195 — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 54 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Light Nudge | hsla0001 |
Customer experience
Steddy
Stack
In-app purchases
Steddy
- Steddy Monthly$2.991 Month
- Steddy Annual7 Days trial$20.001 Year
Stack
No in-app purchases
