Comparison

Mist vs Bio Optimizer

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

Head to head
About

Mist

Easily log your food and exercise with a simple interface. Automatically calculates calories and macros, allowing you to view their impact on your health. Focuses on fast, uncomplicated tracking.

Highlights
  • Quick food and exercise logging
  • Automatic calorie calculation
  • Macro tracking
  • View health impacts (sleep, weight, mental health)
  • Optional calorie count hiding
  • Simple, no-fuss interface
Features
Read full description

Track food and exercise as quickly as a notes app. - No complicated menus, calories are automatically calculated - Log meals, workouts, and daily activity in seconds - Search for foods and see their macros - View how diet affects different aspects of health, including sleep, weight, and mental health - Hide calorie counts whenever you want - No complicated features. Just fast, easy food tracking Privacy policy: https://www.getmistapp.com/privacy Terms of use: https://www.getmistapp.com/terms

About

Bio Optimizer

Read full description

Bio Optimizer turns your blood panels and daily rhythm into one calm, private picture of how you're doing — between lab visits, not just on lab day. Enter your bloodwork or import it with a quick scan, then see it alongside the signals from your wearable and your day. A single Optimizer Index and clear tiles for Blood, Bio, and Mind help you notice what's steady, what's drifting, and where to place your attention next — without noise or hype. Built for people who take their health seriously and value their privacy. Your lab values and metrics are processed and stored on your iPhone, with optional backup to your own iCloud. We do not warehouse your health records on our servers. WHY PEOPLE USE IT • See your labs and daily signals in one place, on your schedule • Understand trends between panels instead of guessing • Keep a steady daily practice for body and mind • Stay in full control of your own data Free includes: • Optimizer Index and blood scoring • Manual entry and one complimentary lab scan import • Bio Alignment sync and Daily Optimization • One Align Mind session per day • iCloud backup and Home Screen widget Premium adds: • Deeper history trends (3M–1Y) • Full Bio Coaching insights • Dashboard Deep Insights • Unlimited lab scan imports • Clinical Report PDF export • Expanded Align Mind sessions Premium is an auto-renewable subscription. Payment is charged to your Apple ID at confirmation of purchase and renews automatically unless canceled at least 24 hours before the end of the period. Manage or cancel anytime in your Apple ID subscription settings. Bio Optimizer is for informational and wellness purposes only. It is not a medical device and does not provide diagnosis or treatment. Always consult a qualified professional for medical decisions. Privacy Policy: https://bio-optimizer.com/privacy-policy.html Terms of Use (EULA): https://bio-optimizer.com/terms-of-service.html

Screenshots

Mist4 screens
Bio Optimizer4 screens

Verdict

The call

Mist and Bio Optimizer are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Mist sells 2 in-app purchases, starting at $7.99 per month and Bio Optimizer sells 2 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Mist ships an update every 2 days, Bio Optimizer every 4 days. The most recent releases landed on October 17, 2026 and October 13, 2026 respectively.

ScorecardNo meaningful differences
Mist versus Bio Optimizer: the parameters behind the verdict, then further details
ParameterMistBio Optimizer
PriceFreeFree
Rating4.9 (550 ratings) — better—
Positive reviews82.5% of reviews—
Number of ratings550 — better—
Update frequencyEvery 2 days — betterEvery 4 days
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.6 — better17.0
Further details — not scored
Size64 MB76 MB
Age rating+1212+
DeveloperHolographYOU SUNG CHYUNG

In-app purchases

2 purchases

Mist

Subscriptions2
  • Mist Monthly7 Days trial$7.991 Month
  • Mist Yearly7 Days trial$59.991 Year
2 purchases

Bio Optimizer

Subscriptions2
  • Monthly Premium$19.991 Month
  • Annual Premium$119.001 Year

Questions

Is Mist free?
Mist is free to download, with in-app purchases available.
Is Bio Optimizer free?
Bio Optimizer is free to download, with in-app purchases available.
Do Mist or Bio Optimizer have ads?
Neither Mist nor Bio Optimizer shows ads.
Which is updated more often, Mist or Bio Optimizer?
Mist ships an update every 2 days, and Bio Optimizer every 4 days. Most recently, Mist was updated on October 17, 2026 and Bio Optimizer on October 13, 2026.

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