SIDO vs SmallButBig
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
SIDO
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[The Most Sophisticated Habit Tracker for Growth, SIDO] "Consistency over perfection, 1% daily growth over overwhelming goals." SIDO was created for those who want to build a better tomorrow by accumulating small attempts every day. We removed complex features and flashy notifications, designing it with a modern and minimal approach so you can focus entirely on 'your day' and 'attempts'. Build a solid routine with SIDO, an app that calms your mind the moment you open it, like staying in a neatly organized, sophisticated space. [Key Features of SIDO] β Intuitive Daily Routine Check β’ Register your own attempts for today and lightly check them off. β’ Reading, walking, meditatingβanything is fine. A small but definite sense of accomplishment builds up every day. β Mindset & Retrospective Journal β’ Beyond simple routine checks, leave short memos of your feelings and realizations of the day. β’ Record your inner growth like your own quiet diary. β Minimal & Sophisticated Design β’ We eliminated unnecessary visual noise so only your records stand out. β’ The calm and sophisticated theme provides an experience you'll want to return to every day. β Achievement Tracking β’ See at a glance how many attempts you have accumulated over the month and gain motivation for tomorrow. Time to meet a slightly more grown version of yourself than yesterday. Start your small and precious attempts with SIDO right now.
SmallButBig
This app transforms your to-do lists into a visual timeline, helping you focus on one task at a time. It allows for detailed planning, light tracking of actual time spent, and provides honest records of your efforts, even when plans change.
- One task at a time scheduling
- Three-stage planning (Someday, Date, Date & Time)
- Lightweight time tracking
- Honest record of actual time spent
- Flexible task splitting and merging
- Project management with Gantt charts
- Habit tracking and pooled tasks
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Small days add up to big dreams. βAn app for anyone working toward a big dream, one small day at a time. Made by one developer, shaped by the people who use it. β Why I made it βRight after high school, I skipped college and worked various jobs to earn money first. Then I chose experience over money and started college relatively late. I now study economics at Sungkyunkwan University in South Korea and am preparing to study in the U.S., dreaming of corporate finance on Wall Street in New York. Applying to top schools meant keeping a 3.98/4.0 GPA while managing many projects at once: assignments, volunteering, an on-campus job, tutoring low-income students, hackathons and public policy work. With so much I wanted to do and was responsible for, using each day well mattered. βBut my tasks lived in a to-do app, my appointments in a calendar and my long-term goals somewhere else, so I kept switching apps to check, and things slipped through. βI needed one tool to track tasks, events, steady habits and workouts, see projects in one place from different angles, and fit it all into a timetable. So I used the coding I'd briefly done before college to build the app myself and solve my own problem. βThe app my friends and I were using somehow reached 450 downloads within two weeks of its official launch, with people in Korea, Japan, the U.S., Canada, Israel and beyond using it and sending valuable feedback. Grateful and feeling responsible, I'm now on leave from school to develop it full-time. A precious chance has come, and I really want to build it well. β Why is the app called SmallButBig? βSmallButBig means small, but big. A day is small, but I believed no big dream comes true unless small days add up. βThe icon's small checks once formed one big check; now three checks form a smiling face: an app that stays with you through small days until the day you smile. β Made together - Every word from the people who use the app becomes a guide for the next update. - When a bug is reported, my rule is to fix it that same day and submit it for review, so you can update the very next day. If you report it on a weekend, though, you'll get the update on Tuesday morning. - Every bit of revenue the app makes goes into developing new products and features. - Prices may also rise as the product's quality improves, but as long as you keep the subscription you first bought, you keep your first price, regardless of those increases. - If the price is a burden or you're going through a hard time, please email me at smallbutbig.app@gmail.com and tell me about your situation. - The Mac app is sold separately on the Mac App Store. β Requires a purchase βThere is no free version. Every feature requires a monthly or yearly subscription, or a one-time lifetime purchase. Subscriptions auto-renew unless cancelled before the period ends; cancel anytime in Settings > Apple Account > Subscriptions. Prices are shown on the in-app purchase screen. β Junbeom Lim Privacy Policy: https://lim394.github.io/smallbutbig-legal/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: SmallButBig at every 3 days against SIDO's every 6 days. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. SIDO sells 2 in-app purchases, starting at $3.99 per month and SmallButBig sells 3 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.
SIDO ships an update every 6 days, SmallButBig every 3 days. The most recent releases landed on October 12, 2026 and October 25, 2026 respectively.
| Parameter | SIDO | SmallButBig |
|---|---|---|
| Price | Free | Free |
| Positive reviews | β | 88.9% of reviews |
| Update frequency | Every 6 days | Every 3 days β better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | β | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 β better | 18.0 |
| Further details β not scored | ||
| Size | 70 MB | 129 MB |
| Age rating | 4+ | 4+ |
| Developer | AEJIN SEO | Junbeom Lim |
In-app purchases
SIDO
- SIDO Pro μκ°7 Days trial$3.991 Month
- SIDO Pro μ°κ°7 Days trial$29.991 Year
SmallButBig
- Basic Monthly$7.991 Month
- Basic Yearly$47.991 Year
- Lifetime Access$191.99









