Skip to content
21days — Startup Profile
Startup

21days

Forge Unbreakable Discipline. 21 Days. Zero Compromise.

Productivity & CollaborationEstimated

Astracia Signal Score

Compare with similar →

Not enough public signals for a score yet. Missing signals are not a sign of weakness.

Connections

No public connections on record yet.

About the startup

Take the 21days Community Challenge. 6 demanding tasks daily. Fail one, you restart from Day 1. This isn't easy. It's about proving you can commit.

Similar products in Productivity & Collaboration

Browse category →

Products from the same category with overlapping descriptions or details. They are not reviewed alternatives; compare features and current plans before choosing.

Product

Forex Discipline Tracker

Free discipline and habit tracker for forex traders

Mobioos Forge

Mobioos Forge helps you to map the business features of your application so you can export and reuse your code into the different variants of your choice automatically.

Jade Cosmos Forge

Mindset mastery meets cosmic warfare strategy.

Endless Forge

Free online tools for developers and creators

Discipline Rewards

Personal accountability for goals, habits, and daily follow-through.

Seamless Rolled Rings - Akron Ring Forge

Seamless Rolled Rings for Industrial Applications

Forge

AI Content Strategy Platform for creators and agencies

Favorites Forge

Turn bookmark chaos into order — automatically

Browse category →

Selected by category and available use-case details. A topic match does not establish equivalent features.

Product

Toad

Toad turns project chaos into a clear, visual command centre.

metric-converter

Free online unit converter: 20+ types for length, weight, temp & more!

deepname

Deep branding for your next idea

Altavize

Productivity tool, Automation

Kliv

Build any app or website by chatting with out agentic AI

Panda Kanban

Your Personal Kanban board

Recently added in Productivity & Collaboration

Browse category →

Added to this directory in the past 30 days. Dates refer to the directory listing, not the product launch.

Product

真真翻譯

Multi-language translation for travel and work

TimeToolsLab

Calculate time ago, count down to a clock time, add or subtract calendar dates, and find time from now — free, with no signup.

The No-Fluff AI Tools List

The No-Fluff AI Tools List

Subvanta

See the full cost of recurring spend

Explore expertise in Productivity & Collaboration

See all →

Profiles grouped by topic. This does not confirm an offer, availability or a connection to this profile.

Profile

Technomanagers

IIM Bangalore & IIT Kanpur alumni are helping you land your dream career in Management or Technology.

David Allen

American productivity consultant and author

Lawrence Gentilello

Founder/Board Director at Screenleap

Media about Productivity & Collaboration

See all →

Shows and channels grouped by topic. A recommendation does not mean this profile was featured or endorsed.

Show

Top SaaS & AI Tools

YouTube · 130K subscribers

Ai & SaaS Lab

YouTube · 10K subscribers

Rajan_Facts_YT

YouTube · 401K subscribers

Founder stories from Productivity & Collaboration startups

See all →

Retold founder accounts from startups in the same category, each linked to the original.

Story

Buffer's first paying customer arrived four days after a seven-week build

Joel Gascoigne validated Buffer with a two-page landing flow, spent seven weeks of evenings and weekends on a minimal product, launched on 30 November 2010, and recorded a first paying customer within four days.

Tibo stated sub-$2M ARR at sale and $6–7M later, not catalog $3.5M

In a January 2024 Bootstrapped Founder interview, Thibault Louis-Lucas did not quote a $10M sale price or $3.5M ARR; he said Lempire acquired them below $2M annual recurring revenue and that they were nearing $6–7M, with

Tally's March 2024 letter is $100k MRR, not a $3M ARR stamp

Marie Martens wrote that Tally, launched in summer 2020 with Filip, hit $100k monthly recurring revenue in February 2024 with a bootstrapped team of three and more than 250,000 users; this record uses those founder label

Ajay Goel priced GMass after a free year, not after an ARR headline

Ajay Goel’s own GMass posts give send volume, user counts, and plan prices. In a later interview he described a $10,000 first build, a free first year, and $10,000 to $20,000 a month after the paywall. He did not state $

Browse Productivity & Collaboration categories

See all →

Subcategories in the same part of the directory, with the number of listed products.

Category

Project & task management

4,060 listed products

Time tracking & focus

2,858 listed products

Search, browsers & utilities

2,610 listed products

Notes & knowledge management

2,090 listed products

Documents & PDF

1,677 listed products

File storage & transfer

1,068 listed products

Meetings & team communication

871 listed products

Whiteboards & mind maps

550 listed products