Comparison

Prism vs Mark Things

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

Head to head
About

Prism

Features
Read full description

Prism is an elegant utility that transforms your daily sunlight exposure into a journey of discovery. By syncing seamlessly with your Apple Watch, Prism helps you balance your light intake and well-being effortlessly. Key Features 1 Seamless Apple Watch Integration. Automatically syncs Time in Daylight using Apple Watch ambient light sensors for a hands-free tracking experience. 2 Dynamic iPhone Widgets. Stay connected with beautiful Home Screen and Lock Screen widgets that show your progress at a glance. 3 Spirit Evolution. Your sunlight data nourishes unique Spirits. Unlock various visual forms as they evolve based on your daily activity. 4 Environmental Insights. View real-time local UV Index and sunset data to plan your outdoor day safely. 5 Secure HealthKit Sync. Prism integrates deeply with the Apple Health app to store and visualize your light exposure data securely. Disclaimer. All data is for informational purposes only. Please consult a professional before making health decisions. information about the auto-renewable nature of the Premium Subscription: Subscription period: 1 month. Price: $1.99 per month (or local equivalent). Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period. Terms of Use (EULA): [https://superficial-restaurant-956.notion.site/Privacy-Policy-2f3f52245d5580b1ae9ac299a0408cff?source=copy_link]. Privacy Policy: [https://superficial-restaurant-956.notion.site/Terms-of-Use-EULA-2f3f52245d558073aa26f42eb6149f80?source=copy_link].

About

Mark Things

Features
Read full description

Mark Things is the all-in-one tally counter for everything in your life. Track anything. Count anything. Understand everything. Whether you're counting coffee cups, tracking habits, logging workouts, or recording daily events, Mark Things turns simple tallies into powerful insights. ■ Count Anything Use Mark Things as a universal counter: • Coffee cups • Water intake • Workouts • Mood logs • Reading sessions • Expenses • Daily habits • Custom life events If it happens — you can mark it. ■ More Than a Counter Unlike simple tally apps, Mark Things combines: • Tally counter • Notes for every entry • Todo tracking • Monthly calendar view • Smart statistics • Visual insights Everything stays organized in one clean place. ■ See Your Patterns Numbers become meaningful with: • Daily / Weekly / Monthly statistics • Trend charts • Frequency insights • Long-term patterns • Visual progress tracking Stop guessing. Start understanding. ■ Monthly View Get a bird’s-eye view of your life. Quickly see when you logged events, completed tasks, or hit milestones. ■ Built for Clarity • Minimal and clean design • Fast one-tap counting • Custom categories • Flexible tracking • Designed for real daily use Mark Things helps you become more aware, more intentional, and more in control of your habits and daily life. Start marking today. Privacy policy: https://markthings.lovehealth.space/privacy Terms of service: https://markthings.lovehealth.space/terms

Screenshots

Prism4 screens
Mark Things4 screens

Verdict

The call

The clearest difference is device support: Prism at 3 against Mark Things's 1. Mark Things's advantage is iOS requirement (17.0 vs 26.0). On price, update cadence, ads and in-app purchases 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. Prism sells 1 in-app purchase, starting at $1.99 per month and Mark Things sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Prism ships an update every 11 days, Mark Things fortnightly. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 4 level
Prism versus Mark Things: the parameters behind the verdict, then further details
ParameterPrismMark Things
PriceFreeFree
Update frequencyEvery 11 days — betterFortnightly
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS26.017.0 — better
Further details — not scored
Size3 MB162 MB
Age rating4+4+
Developer剑炜 陈名 陈

In-app purchases

1 purchases

Prism

Subscriptions1
  • Prism Premium (Monthly)1 Month trial$1.991 Month
1 purchases

Mark Things

One-time1
  • One-time Purchase$1.99

Questions

Is Prism free?
Prism is free to download, with in-app purchases available.
Is Mark Things free?
Mark Things is free to download, with in-app purchases available.
Do Prism or Mark Things have ads?
Neither Prism nor Mark Things shows ads.
Which is updated more often, Prism or Mark Things?
Prism ships an update every 11 days, and Mark Things fortnightly. Most recently, Prism was updated on October 28, 2026 and Mark Things on October 31, 2026.

Other comparisons