HabitSpark vs Idus

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

HabitSpark compared with Idus
Detail	HabitSpark	Idus
What it does	A focus timer with built-in balance for work and rest	Tasks, projects, notes, group chat and AI assistant in one calm place
Stage	Startup	Not given
Founded	Not given	Not given
Based in	CZ	Not given
Pricing model	Freemium	Not given
Pricing	Free version includes timers, history, and Spark balance. HabitSpark Pro available as subscription or lifetime purchase through Apple App Store.	Free on phone with unlimited projects, tasks and notes. Paid plan: $5/month or $48/year (with 20% yearly discount equivalent to $4/month), includes 7 free trial days.
Key features	Spark balance system for work and leisure tracking Activity multipliers for different types of effort Focus timer with real-time balance updates Daily history and progress tracking Insights for comparing focus and leisure patterns No-streak design for consistency without pressure Backup and restore functionality in Pro Local data storage with no cloud backend	Unlimited projects, tasks and notes on free plan Projects with steps and color-coded urgency rings Unified calendar view of all deadlines Notes with formatting, checklists and tables Group chat within projects with file sharing AI assistant for planning, writing and summarizing Six theme options including dark and greyscale modes Sync across phone and web devices
What makes it different	Balance approach that shows work-leisure tradeoff without blocking activities No streaks to protect, reducing pressure and supporting real consistency Free to start with no account required and private by default Local-first design with no third-party analytics or ads	Free app includes almost every feature with no time limit or card required Chat and file sharing integrated directly within projects AI assistant that modifies existing content rather than just suggesting changes Notebooks with physical book appearance and A4 PDF export format
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	1 no change since last check	Not checked yet no change since last check
Trust Flow (Majestic)	6	1
Citation Flow (Majestic)	16	18
Referring domains (Majestic)	12	7

4 details filled in for both companies.

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