Comparison

BiAffect vs suntime.

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

Head to head
About

BiAffect

This ResearchKit study explores the link between mood and cognitive function in bipolar disorder using typing patterns and passive sensor data. Both individuals with bipolar disorder and healthy participants are needed to help identify objective biomarkers.

Highlights
  • Keystroke dynamics analysis
  • Passive sensor data collection
  • Mood and neurocognitive study
  • Bipolar disorder research
  • Control group participation
Read full description

Thank you for trying BiAffect. In this ResearchKit study, we would like to understand the relationship between mood and neurocognitive functioning in bipolar disorder using keystroke dynamics (such as typing speed and typing errors) and other passive sensor information (such as the accelerometer). You don't have to be a person with bipolar disorder to help us test this app—we also need healthy participants to use the app and serve as a control group. Currently, diagnosis and treatment of bipolar disorder rely on careful history taking and examination by a clinician, at times aided by self-report or caretaker-informed questionnaires. In general, these reports have to be interpreted by providers in order to extract patterns that could indicate an imminent change in mood. Moreover, they do not necessarily represent objective psycho-physiological markers. On the other hand, the pervasive use of mobile wireless devices has significantly shaped interpersonal communications in modern life. Indeed, as personal smartphone technology advances, people are increasingly interacting with one another via typed (rather than oral) communications. For this reason, we want to investigate if keyboard dynamics and sensor data from iPhone serve as more objective biomarkers or 'virtual mental-health footprints' of bipolar disorder and mood in general.

About

suntime.

This app offers real-time UV tracking, personalized sun safety timers, and gamified insights to help users enjoy the outdoors without sunburn. It provides features like smart UV timers, sunscreen effectiveness tracking, and UV forecasts for safe outdoor planning.

Highlights
  • Real-time UV tracking
  • Personalized sun safety timers
  • Sunscreen effectiveness tracking
  • Protective gear logging
  • UV forecasts
  • Gamified SunScore
  • Family mode for multi-member tracking
Features
Read full description

suntime. gives you real-time UV tracking, personalized sun safety timers, and gamified insights to help you (and your family) enjoy the outdoors without the burn. Solo Mode Your personal sun safety companion for everyday outdoor activities. • Smart UV Timer — Real-time countdowns based on your skin type, current UV index, and SPF level • Sunscreen Effectiveness — Live tracking of your sunscreen's protection as it fades over time • Protective Gear Tracking — Log hats, sunglasses, and shade to extend your safe sun time • Post-Sun Check-Ins — Report sunburns and get smarter recommendations for next time • UV Forecasts — Hourly UV predictions so you can plan outdoor activities safely Family Mode (Premium) Manage sun safety for your whole family in one screen. • Multi-Member Tracking — Monitor parents, kids, toddlers, and babies simultaneously • Collapsible Cards — See everyone's countdown at a glance, expand for details • Age-Specific Guidance — Custom recommendations for babies (shade only), toddlers, children, and adults • Individual SPF & Timers — Each family member gets their own sunscreen tracking and safe exposure countdown • Quick Session Management — Add/remove family members, reapply sunscreen, and end sessions with one tap SunScore Gamify your sun safety with a daily score (0-100) that tracks how well you protect yourself. • Daily Motivation — See your sun safety score update in real-time as you apply SPF, wear protective gear, and avoid overexposure • Weekly Streaks — Build consistency with streak tracking and tier badges (Bronze, Silver, Gold, Platinum) • Personal Bests — Track your highest scores and longest streaks • Insights & Breakdown — Detailed charts showing how SPF usage, gear, and exposure time affect your score • Milestones & Badges — Unlock achievements as you build healthier sun habits Health Tracking • Water intake reminders (stay hydrated in the sun) • Sunscreen reapplication alerts based on UV intensity • Exposure history with weather, UV levels, and duration logs Why suntime.? Whether you're a parent managing kids at the playground, an outdoor athlete training in the sun, or just someone who wants to enjoy the outdoors safely — suntime. gives you the tools to prevent sunburn, track sun exposure, and build long-term healthy habits. Perfect for: • Parents managing sun safety for multiple kids • Outdoor enthusiasts, runners, and hikers • Anyone with fair or sensitive skin • People building healthier sun habits with data and motivation Download suntime. today and turn sun safety into a habit. DISCLAIMER suntime. provides guidance for informational purposes only and is not a substitute for professional medical advice. Privacy Policy: https://suntime-299.created.app/privacy Terms of Use: https://suntime-299.created.app/terms

Screenshots

BiAffect3 screens
suntime.4 screens

Verdict

The call

The clearest difference is rating: suntime. at 5.0 against BiAffect's 4.3. suntime. also leads on update cadence (every 2 weeks vs monthly). BiAffect's advantage is in-app purchases (none vs 2) and ratings volume (12 vs 1). On price, ads, device support and iOS requirement there is nothing between them.

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. suntime. sells 2 in-app purchases, starting at $1.99 per month. BiAffect asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

suntime. holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: BiAffect has 12 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

BiAffect ships an update monthly, suntime. every 2 weeks. The most recent releases landed on October 9, 2026 and October 3, 2026 respectively.

Scorecard5 real differences · 5 level
BiAffect versus suntime.: the parameters behind the verdict, then further details
ParameterBiAffectsuntime.
PriceFreeFree
Rating4.3 (12 ratings)5.0 (1 ratings) — better
Positive reviews50.0% of reviews—
Number of ratings12 — better1
Update frequencyMonthlyEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS16.115.1 — better
Further details — not scored
Size36 MB67 MB
Age rating12+17+
DeveloperUniversity of IllinoisChris Dziuba

In-app purchases

None

BiAffect

No in-app purchases

2 purchases

suntime.

Subscriptions2
  • suntime. Premium Monthly3 Days trial$1.991 Month
  • suntime. Premium Yearly3 Days trial$9.991 Year

Questions

Is BiAffect free?
BiAffect is free to download, with no in-app purchases.
Is suntime. free?
suntime. is free to download, with in-app purchases available.
Which has better reviews, BiAffect or suntime.?
suntime. is rated higher. BiAffect averages 4.3 out of 5 from 12 ratings, while suntime. averages 5.0 from 1 ratings.
Do BiAffect or suntime. have ads?
Neither BiAffect nor suntime. shows ads.
Which is updated more often, BiAffect or suntime.?
BiAffect ships an update monthly, and suntime. every 2 weeks. Most recently, BiAffect was updated on October 9, 2026 and suntime. on October 3, 2026.

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