Calmer OS vs OneLess
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calmer OS
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Enjoy Time for Yourself with Calmer OS, anytime and everywhere! In our fast-paced world, it’s important to pause and recharge. Calmer OS is a simple and intuitive app designed to help you unwind, meditate, breath or simply enjoy a peaceful moment. Whether you need a quick break during your busy day, a moment of mindfulness in the morning, or a way to wind down after meetings, Calmer OS is here to help you find peace and focus.
OneLess
This app helps you declutter your home by focusing on removing just one item each day. It provides a simple way to track your progress, build a daily habit, and visualize your decluttering journey without overwhelming you.
- Frictionless daily logging
- Habit tracking and streaks
- Visual progress analytics
- Gentle daily nudges
- Privacy-first, on-device data
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Clutter doesn’t pile up in a single weekend. It creeps in slowly, one day at a time. This is the antidote. Welcome to OneLess—the distraction-free habit builder designed to help you reclaim your space without the overwhelming stress of a massive weekend purge. The philosophy is simple: you don’t need to clean your entire house today. You just need to get one item out the door. Whether it's an old pair of shoes, a duplicate kitchen utensil, or an expired coupon, every single piece you let go brings you closer to a lighter, more intentional home. How it Works: Pick an Outcast: Find one thing in your environment that no longer serves a purpose. Log the Release: Track what it was, categorize it, and record how you disposed of it—whether you trashed, donated, recycled, or sold it. Build Your Streak: Log your daily removal to protect your momentum and watch your habits compound over time. Key Features: Frictionless Daily Logging: Quick, minimalist interface built to log your progress in under ten seconds. Habit Tracking & Streaks: Maintain your daily momentum with live streak tracking and milestone awards. Visual Progress Analytics: Beautiful, clear charts that break down exactly what kind of items you are letting go and where they are going. Gentle Daily Nudges: Fully customizable, non-intrusive daily notifications scheduled around your life to keep your streak alive. Privacy First: Your data is yours. OneLess runs entirely on your device with no hidden tracking, accounts, or cloud data harvesting. The slow creep of physical stuff stops here. Download OneLess today and start building a lighter space, one piece at a time.
Screenshots
Verdict
Calmer OS and OneLess are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Calmer OS | OneLess |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 12 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Petr Betak | BRANDON HAOYANG WANG |
In-app purchases
Calmer OS
No in-app purchases
OneLess
No in-app purchases
