Comparison

CafLog vs GemStep

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

Head to head
About

CafLog

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CafLog helps you log caffeine in seconds and see how much will still be in your body at bedtime. - Your drinks become a 3D scene Each time you log a drink, a cup, can or bottle drops from the top of the screen and piles up at the bottom. The pile resets every week, so you can see at a glance how much you've had this week. You can grab and move the drinks with your finger. - Quick logging Pick from 26 drinks, including coffee, espresso, green tea and energy drinks. Long-press the log button to bring up your favorites. Adjust the amount or time later, and add your own drinks. - Coffee-kun tells you about your sleep CafLog estimates the caffeine in your body now and what will be left at your bedtime. Coffee-kun, the app's character, sums up your day in one line. - Look back with a monthly grid Each day of the month is a square shaded by how much you had. Days without a record show as no-caffeine days. Highlights are summed up in four cards. - Rewards that grow as you go Keep logging to climb six achievement levels. Each level unlocks rewards: Coffee-kun expression icons, Coffee-kun artwork, themes for the whole app and 3D looks. - Widgets Check today's total and your bedtime estimate on the Home Screen and Lock Screen. - CafLog Pro (auto-renewing subscription) - Past records (earlier weeks in 3D and earlier months in Review) - Metabolism simulation (your caffeine curve) - Every look unlocked - Saving to Apple Health and iCloud sync - Up to 4 favorites - No ads Monthly and yearly plans are available. If a plan includes a free trial, cancel at least 24 hours before it ends to avoid being charged. Payment is charged to your Apple ID account at confirmation of purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in your App Store account settings. The free version shows ads at the bottom of the Review and Account screens. CafLog never asks to track you for ads and does not show personalized ads. Amounts are estimates based on typical values and are not intended for medical diagnosis or treatment. Terms of Use: https://app.yutodev.com/apps/caflog/terms/ Privacy Policy: https://app.yutodev.com/apps/caflog/privacy/

About

GemStep

Features
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Every step shapes a crystal. GemStep is a step counter and gentle growing game that turns your daily walks into a one-of-a-kind 3D crystal — right on your Home Screen. Choose a starting shape and scene, go about your day, and watch new crystal columns emerge as your steps add up. Every crystal is created from its own unique seed, giving it a form you can rotate in 3D, replay from the beginning, customize, collect, and share. KEY FEATURES - Automatic Step Tracking: Connect to Apple Health through HealthKit and let GemStep read your step totals automatically — no manual input needed - Living 3D Growth: Watch your crystal gradually change shape as you walk, with new columns appearing throughout its growth - Home Screen Widgets: Add Small, Medium, or Large widgets and keep your crystal and latest progress close by - One-of-a-Kind Crystals: Each crystal combines its own seed, shape, color, clarity, and scene — no two journeys have to look the same - Growth Time Machine: Replay your crystal’s journey from its earliest form to where it is today - Personal Collection: Save completed crystals, give them names, mark your favorites, and build a collection shaped by your walks - Customize Your Crystal: Change colors, switch scenes, or try a new shape without resetting your growth progress - Create & Share: Turn your crystal into a high-resolution image, wallpaper, transparent PNG, or six-second rotating video - Gentle Progress: No streaks to break, no wilting, and no punishment for missing a day WHY GEMSTEP Most step counter apps only show you numbers. GemStep turns those steps into a visible reward — a beautiful 3D crystal shaped by your own journey. It feels like a game, but all you have to do is walk. There are no strict daily goals and no pressure to maintain a streak. Your crystal simply keeps growing whenever you do. Perfect for anyone bored with traditional pedometers or looking for a relaxing, visual reason to walk more. PERFECT FOR - Anyone looking to make a daily walking habit more enjoyable - People who find traditional step counters boring - Widget lovers who want something beautiful that changes on their Home Screen - Fans of crystals, relaxing growing games, and digital collections - Anyone who prefers gentle motivation without streak pressure HOW IT WORKS 1. Choose a starting shape and a scene for your crystal 2. Connect to Apple Health for automatic step tracking 3. Walk through your day — commute, explore, run errands, or take a quiet stroll 4. Follow your crystal’s latest growth in GemStep or from the Home Screen widget 5. Rotate it in 3D, replay its growth, customize its appearance, or share your creation 6. Add the completed crystal to your collection and begin growing another HEALTHKIT INTEGRATION GemStep uses HealthKit to read step totals from Apple Health, so you do not need to enter steps manually or keep the app open while you walk. Walk with your iPhone or any compatible device that saves steps to Apple Health, and GemStep applies the latest available totals when it syncs. GemStep requests read-only access to step totals. It does not read walking routes or precise location, and it never writes data to Apple Health. HOME SCREEN WIDGETS Add a Small, Medium, or Large GemStep widget to keep your crystal nearby. See its latest appearance and step progress without opening the app. Widgets update throughout the day according to the refresh timing allowed by iOS. GET STARTED Download GemStep and turn every walk into a one-of-a-kind 3D crystal. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://gemsteps.com/privacy

Screenshots

CafLog4 screens
GemStep3 screens

Verdict

The call

The clearest difference is ads: GemStep at none against CafLog's shown. GemStep also leads on update cadence (daily vs every 7 months) and iOS requirement (18.0 vs 26.1). On price, in-app purchases 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. CafLog sells 2 in-app purchases, starting at $1.99 per month and GemStep sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

CafLog ships an update every 7 months, GemStep daily. The most recent releases landed on November 9, 2026 and November 10, 2026 respectively.

Scorecard3 real differences · 3 level
CafLog versus GemStep: the parameters behind the verdict, then further details
ParameterCafLogGemStep
PriceFreeFree
Update frequencyEvery 7 monthsDaily — better
AdsYesNo — better
In-app purchasesYesYes
DevicesiPhone, iPad — betteriPhone
Requires iOS26.118.0 — better
Further details — not scored
Size110 MB30 MB
Age rating17+4+
DeveloperYuto Uesugi东景 梁

In-app purchases

2 purchases

CafLog

Subscriptions2
  • Monthly Plan3 Days trial$1.991 Month
  • Annual Plan7 Days trial$9.991 Year
3 purchases

GemStep

One-time3
  • 300 Credits$0.99
  • 1,000 Credits$2.49
  • 2,500 Credits$5.99

Questions

Is CafLog free?
CafLog is free to download, with in-app purchases available.
Is GemStep free?
GemStep is free to download, with in-app purchases available.
Do CafLog or GemStep have ads?
CafLog shows ads; GemStep does not.
Which is updated more often, CafLog or GemStep?
CafLog ships an update every 7 months, and GemStep daily. Most recently, CafLog was updated on November 9, 2026 and GemStep on November 10, 2026.

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