Comparison

Datalyst vs Stepmit

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Datalyst

Features
Read full description

Find out what is really behind your symptoms. Migraines that come out of nowhere. A gut that flares after some meals but not others. Bad sleep, low energy, mood swings. Datalyst helps you log your days in seconds and then shows you which foods, habits, supplements and routines line up with your worst and best days. TRACK ANY SYMPTOM • Headache and migraine severity, pain, bloating, fatigue, anxiety, mood, focus • Sleep, energy, caffeine, alcohol, food, workouts, medication timing, supplements • Any custom variable you name, on a scale or as a number • One quick check in a day, or as many as you need FIND YOUR TRIGGERS • The Lab compares what you did with how you felt and shows real correlations • Run a simple experiment on yourself: change one thing, keep logging, see if it helped • Results measured against your own baseline, not a population average • Trends over weeks and months, so slow patterns stop hiding SEE IT AT A GLANCE • Activity heatmaps and streaks make gaps and flare ups obvious • A dashboard that leads with what your data is telling you • Export your log as CSV to share with your doctor or analyze yourself BUILT FOR HONEST DATA Logging takes seconds, because a symptom diary you skip is a diary that lies. No nagging, no gamified health, and no pretending a correlation is a diagnosis. PRIVATE BY DEFAULT Your symptom log is yours. Privacy policy: https://www.datalyst.one/privacy Datalyst is a self tracking journal, not a medical device. It does not diagnose, treat, or replace professional medical advice.

About

Stepmit

Features
Read full description

Your steps and activity, like a terminal log. Stepmit isn't your typical fitness app. It's an activity log with a developer's sensibility — for people who want to keep their daily activity in the style of a contribution graph and a terminal. Everything on screen is a custom terminal UI drawn with a monospace font and ASCII blocks. ā–  Activity is automatic, records are a 'commit' Steps, distance, calories, and floors appear automatically from Apple Health. Attaching a type and a one-line note to a day is what Stepmit calls a 'commit'. Committed days stack up as a log you can revisit anytime or share as a card. ā–  Step contribution graph See a month of step activity as a block heatmap. Watch it fill in and read your whole month at a glance. ā–  Records, made richer Ā· diff — when you commit, see the change versus the same time yesterday, in green/red. Ā· Monthly release — a card that sums up the month's activity, like a 'git tag'. Ā· On this day — meet your records from 1 year, 6 months, and 1 month ago today. Ā· Images as block art — attach a photo to a record and, instead of the original, it's converted into 8-level block art in your current theme colors. (The original photo is never stored or transmitted.) ā–  Color themes Several terminal color themes. Switch a theme and the graph, mascot, and block art recolor together. ā–  Share cards Render a record as a terminal-style card to share or save as an image. Choose to include the hourly graph or block art, plus the diff. ā–  Light, and private Ā· Apple Health is read-only Ā· no server Ā· no tracking, ads, or account Ā· Records sync only to your private iCloud (CloudKit) Ā· No background location tracking. — For developers, for tech folks, and for anyone who responds to a contribution graph and a monospace font.

Screenshots

Datalyst3 screens
Stepmit4 screens

Verdict

The call

The clearest difference is device support: Datalyst at 3 against Stepmit's 1. Datalyst also leads on iOS requirement (15.0 vs 18.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on November 13, 2026 and October 31, 2026 respectively.

Scorecard2 real differences Ā· 4 level
Datalyst versus Stepmit: the parameters behind the verdict, then further details
ParameterDatalystStepmit
PriceFreeFree
Update frequencyMonthlyMonthly
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better18.0
Further details — not scored
Size2 MB2 MB
Age rating4+4+
DeveloperGustavo cesar Sola Barreto MarcelinoSeongsup Lee

In-app purchases

None

Datalyst

No in-app purchases

None

Stepmit

No in-app purchases

Questions

Is Datalyst free?
Datalyst is free to download, with no in-app purchases.
Is Stepmit free?
Stepmit is free to download, with no in-app purchases.
Do Datalyst or Stepmit have ads?
Neither Datalyst nor Stepmit shows ads.
Which is updated more often, Datalyst or Stepmit?
Datalyst ships an update monthly, and Stepmit monthly. Most recently, Datalyst was updated on November 13, 2026 and Stepmit on October 31, 2026.

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