Comparison

Test For Eye vs Caffeine Tracker

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

Head to head
About

Test For Eye

Features
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Everyone wants to know how good their eyes are. Test for eye App will help them to know how good their eyes are. Test for eye app has four levels (Easy, Normal, Hard, and Extreme Hard), In each lever user needs to pick an odd colour. Perform each level and know your result in which category you fall in.

About

Caffeine Tracker

Features
Read full description

Meet your mysterious new companion โ€” a 3D character that lives inside your caffeine tracker and reacts to your body's caffeine level in real time. Sleepy when you're clean, dancing when you're at peak, jittery when you've had too much. The numbers on a graph, finally with a face. MyDailyCaffeine is the smart way to track and manage your daily caffeine intake. Coffee, espresso, tea, matcha, energy drinks โ€” log them all in seconds and see exactly how your body feels, minute by minute. โ—† Meet Your Mystery Mascot (NEW) A 3D animated character appears on your Today tab. Their pose and mood are driven by your actual caffeine curve, so a single glance tells you more than any chart. Tap them for a surprise reaction. Drag to rotate. Pinch to zoom. You can toggle them off anytime from Settings. โ—† Track Caffeine Intake Record every caffeinated drink with one tap. Coffee (95mg), espresso (63mg), green tea (28mg), matcha (70mg), energy drinks (80mg), cola, cocoa, chocolate โ€” and create custom drinks with your own values. โ—† Daily Caffeine Limit Set a personal daily cap (default 400mg, the WHO healthy-adult guideline). See at a glance how much you've consumed versus your target. โ—† Remaining Caffeine in Your Body Know exactly how much caffeine is still active in your system using a 5-hour half-life model. Decide whether that afternoon cup is a good idea โ€” before you pour it. โ—† Calendar Heatmap Spot weekly patterns and habit shifts with a color-coded monthly calendar. โ—† Statistics and Trends 7, 30, and 90-day analytics. Daily averages, most-consumed drinks, long-term trends. โ—† Streaks and Badges A gentle streak system and achievement badges keep the daily logging habit going. โ—† Widget Support Home Screen widgets for an instant caffeine summary, no app open required. โ—† Apple Watch App Log your coffee right from your wrist and check your current caffeine level at a glance. โ—† Personalization Eight theme colors inspired by coffee (espresso, mocha, caramel, matcha, chai, berry, midnight, slate). Dark mode included. โ—† Privacy First All data stays on your device. No account. No cloud. No tracking. โ—† 33 Languages English, Japanese, Korean, Simplified & Traditional Chinese, Spanish, French, German, Portuguese, Arabic, and many more. Feedback & Support: https://keik.co.jp/wp/app-inquiry-form/

Screenshots

Test For Eye4 screens
Caffeine Tracker4 screens

Verdict

The call

The clearest difference is in-app purchases: Test For Eye at none against Caffeine Tracker's 1. Test For Eye also leads on iOS requirement (12.0 vs 26.1). Caffeine Tracker's advantage is update cadence (every 9 days vs every 9 months). On price, ads and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Caffeine Tracker sells 1 one-off in-app purchase. Test For Eye asks for nothing beyond the download.

UpkeepUpdate frequency

Test For Eye ships an update every 9 months, Caffeine Tracker every 9 days. The most recent releases landed on October 10, 2026 and October 8, 2026 respectively.

Scorecard3 real differences ยท 3 level
Test For Eye versus Caffeine Tracker: the parameters behind the verdict, then further details
ParameterTest For EyeCaffeine Tracker
PriceFreeFree
Update frequencyEvery 9 monthsEvery 9 days โ€” better
AdsYesYes
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPodiPhone, iPad, Apple Watch โ€” better
Requires iOS12.0 โ€” better26.1
Further details โ€” not scored
Size27 MB25 MB
Age rating4+4+
Developergangadhar goudKeiK LLC

In-app purchases

None

Test For Eye

No in-app purchases

1 purchases

Caffeine Tracker

One-time1
  • Remove Ads$4.99

Questions

Is Test For Eye free?
Test For Eye is free to download, with no in-app purchases.
Is Caffeine Tracker free?
Caffeine Tracker is free to download, with in-app purchases available.
Do Test For Eye or Caffeine Tracker have ads?
Both Test For Eye and Caffeine Tracker show ads.
Which is updated more often, Test For Eye or Caffeine Tracker?
Test For Eye ships an update every 9 months, and Caffeine Tracker every 9 days. Most recently, Test For Eye was updated on October 10, 2026 and Caffeine Tracker on October 8, 2026.

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