Comparison

Caffeine App vs TEKTELIC eDoctor

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

Head to head
About

Caffeine App

Track your caffeine intake from various beverages and monitor your hydration levels. Visualize your caffeine curve over 24 hours and receive notifications for your optimal sleep time. Integrates with Apple Health and Apple Watch for seamless logging and data syncing.

Highlights
  • Log caffeine from coffee, tea, and energy drinks
  • Visualize 24-hour caffeine curve
  • Calculate optimal sleep time
  • Track daily water intake
  • Apple Watch logging and complications
  • Apple Health integration
  • iCloud sync
Features
Read full description

How much caffeine is still in your body? When can you fall asleep? Are you drinking enough water? Caffeine App gives you the answers — at a glance. Caffeine Tracking • Log every coffee, tea, espresso, energy drink, or mate • Scrollable 24-hour timeline shows your caffeine curve • See how much caffeine is currently in your system • Create custom drinks with individual caffeine amounts • Caffeine calculator for drinks with unusual sizes Optimal Sleep Time • Caffeine App calculates when you're ready to sleep • Get notified when your sleep time is reached • Set your personal caffeine limit and desired sleep time Water Tracking • Track your daily water intake with personalized goals • Save your favorite glass and bottle sizes • Customizable reminders to stay hydrated Statistics • Daily caffeine and water charts across your full history • See which drinks make up most of your caffeine • Compare your water intake against your daily goal Widgets • Caffeine Now: current caffeine level and 30-day history • Water Intake: today's progress towards your goal • Quick Log: log your favorite drink with one tap • Home Screen and Lock Screen widgets Apple Watch • Log caffeine and water right from your wrist • Daily charts for caffeine and water • Complications show your optimal sleep time More Features • Apple Health integration — caffeine and water entries stay in sync • iCloud sync across all your devices • Dynamic Type for optimal readability • URL scheme support

About

TEKTELIC eDoctor

Features
Read full description

TEKTELIC eDoctor app is an easy-to-use tool for monitoring patients’ vital signs in real time. This app is a perfect choice for remote health monitoring and tracking any changes in medical conditions. eDoctor will significantly improve operational processes in the medical sphere, reducing time wasted on regular checks and filling out the forms with updated measurements. eDoctor is your way to facilitate routine medical processes, make healthcare accessible, and increase patients’ safety in remote areas.

Screenshots

Caffeine App4 screens
TEKTELIC eDoctor4 screens

Verdict

The call

The clearest difference is in-app purchases: TEKTELIC eDoctor at none against Caffeine App's 1. TEKTELIC eDoctor also leads on iOS requirement (15.1 vs 18.0). On price, update cadence, ads and device support 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. Caffeine App sells 1 one-off in-app purchase. TEKTELIC eDoctor asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

Scorecard2 real differences · 8 level
Caffeine App versus TEKTELIC eDoctor: the parameters behind the verdict, then further details
ParameterCaffeine AppTEKTELIC eDoctor
PriceFreeFree
Rating4.6 (341 ratings) — better—
Positive reviews73.7% of reviews—
Number of ratings341 — better—
Update frequencyMonthlyMonthly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, Apple Watch, Vision Pro — betteriPhone, iPod
Requires iOS18.015.1 — better
Further details — not scored
Size20 MB50 MB
Age rating4+17+
DeveloperOleg MuellerTEKTELIC Communications Inc.

Bugs and requests

Caffeine App

Reported bugs

10 issues
  • Sleep ready time displays current time instead of predicted sleep time
  • Cannot rename custom amounts until after adding them
  • Newly added custom amounts appear at bottom of list
  • Health app data from third-party apps not syncing
  • All presets missing in some versions
Show 5 more
  • HealthKit integration broken in certain versions
  • Shift work time differential not processed correctly
  • Outdated caffeine data for Dunkin Donuts beverages
  • Graphics update delays causing app unresponsiveness
  • Watch app loading issues on initial launch

Requested features

20 requests
  • Toggle option to disable bar chart visualization
  • Taller graph display area with scrolling capability
  • Personalization based on body weight and metabolism
  • Ounce-based measurement options for drinks
  • Multi-day and historical trend analysis
Show 15 more
  • Siri Shortcuts integration for automated logging
  • Today widget for quick access
  • Mood and energy level tracking
  • More granular unit adjustments (fractions of shots)
  • Expanded beverage library (Monster Java, Sheetz coffee, K-cups, etc.)
  • Custom coffee group creation without preset requirements
  • Apple Watch complications showing current caffeine levels
  • Watch app graph visualization
  • Headache threshold level tracking
  • Future-looking graph projections
  • Water consumption tracking integration
  • Ability to rename custom amounts before adding
  • Custom amounts appearing at top of list instead of bottom
  • Shift work schedule support
  • Average daily caffeine statistics

TEKTELIC eDoctor

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Caffeine App

One-time1
  • Unlock Pro$4.99
None

TEKTELIC eDoctor

No in-app purchases

Questions

Is Caffeine App free?
Caffeine App is free to download, with in-app purchases available.
Is TEKTELIC eDoctor free?
TEKTELIC eDoctor is free to download, with no in-app purchases.
Do Caffeine App or TEKTELIC eDoctor have ads?
Neither Caffeine App nor TEKTELIC eDoctor shows ads.
Which is updated more often, Caffeine App or TEKTELIC eDoctor?
Caffeine App ships an update monthly, and TEKTELIC eDoctor monthly. Most recently, Caffeine App was updated on October 24, 2026 and TEKTELIC eDoctor on October 27, 2026.

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