I replaced 3 apps with one Excel file — here's how I built a habit tracker that actually shows patterns over 12 months
I tried Habitica, Streaks, Loop Habit Tracker, even a Notion template. They all had the same problem: great for daily check-ins, terrible for seeing the big picture.
What I actually wanted was simple :
- Check off habits daily (yes/no)
- See my streak automatically
- See a completion rate per habit per month
- Compare January vs June vs December side by side
- Have a reflection section to understand WHY some months were better
So I built it in Excel. Here's the structure that works :
12 monthly sheets (Jan through Dec), each with :
- Rows = 14 habits (health, work, learning, finance, social, personal)
- Columns = days 1-31
- Right side: auto-calculated Total, Streak, Rate %
- Bottom: monthly totals + reflection section (3 prompts: what worked, what to improve, priority for next month)
1 Annual Review sheet :
- Pulls completion rates from all 12 months automatically
- Shows each habit's trend across the year
- Identifies your most consistent and least consistent habits
The streak formula was the trickiest part. Most people just use COUNTIF, but that counts total days — not consecutive days. A real streak needs to count backwards from today until it finds a zero. I used a helper formula that checks each day from right to left and stops at the first gap.
What I learned after 8 months of using this :
The reflection section is everything. Without it, you just check boxes. With it, you understand patterns.
14 habits is the sweet spot. Under 10 feels too easy and you don't push yourself. Over 20 and you burn out by week 2.
Monthly scores create natural competition with yourself. Seeing "March: 73%" next to "April: 81%" is more motivating than any app notification.
The annual view is the killer feature. No app showed me that I consistently drop off in November (turns out: shorter days + less motivation). Now I know to set lighter goals that month.
The whole thing is about 1,300 formulas but zero macros, pure Excel formulas. Works in Google Sheets too.
Anyone else use Excel/Sheets for habit tracking ? Curious if you found other patterns.