Kailo vs Perkly Caffeine Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kailo
Share your real-time running and cycling stats with loved ones. This app uses advanced machine learning to analyze your training data, providing accurate race predictions and personalized insights. Explore your progress through interactive charts and conversational data queries.
- Live location, pace, and distance sharing
- Intelligent training analysis
- Accurate marathon time predictions
- Beautiful data visualizations
- Conversational data querying
- Strava and Garmin integration
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Go LIVE on your runs & rides with the Kailo to share your realtime location, pace, and distance stats with friends & family. Kailo helps runners train intelligently, understand their progress, and predict race performance with unprecedented accuracy. Built on cutting-edge machine learning algorithms, Kailo transforms your running data into insights you can act on. Connect your Strava or Garmin account to unlock personalized predictions and workout analysis. -- Marathon Predictions -- We look at your training runs to give you a highly accurate marathon prediction time. Whether you’re chasing your first sub-3 hour or your next personal best, Kailo shows exactly where you stand—and how to get faster. -- Beautiful Data Visualization -- See your training come alive. Kailo automatically turns your runs into dynamic, interactive charts that reveal your progress over time—pace, elevation, heart rate, and more. Every data point is visualized with clarity and purpose, so you can truly see your fitness evolve. -- Chat With Your Data -- Ever wish you could just ask your training data questions? Now you can. Use Kailo's built-in chat to explore your runs conversationally—“Show me my fastest long runs,” “Compare this week’s mileage to last month,” or “Create a chart of my tempo splits.” Your data answers instantly. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Perkly Caffeine Tracker
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Your morning coffee is still in your bloodstream at midnight. Perkly shows you exactly how much. THE LIVE CURVE One glance shows the caffeine in your system right now, rising and falling in real time. Scroll back through past days and watch last night's espresso still working this morning. LOG IN ONE TAP Nine everyday drinks - espresso, coffee, latte, cold brew, black tea, green tea, matcha, energy drink, cola - in three sizes. Tap, done. Forgot one? Backdate it. PROTECT YOUR SLEEP Set your bedtime and a caffeine target. Perkly computes your personal last call - the latest moment another coffee still fits - and can nudge you once, right before it passes. No streaks, no guilt, no spam. TUNED TO YOUR BODY Caffeine clearance varies from person to person. Tell Perkly if you smoke, take oral contraceptives, are pregnant, or simply feel caffeine strongly, and the curve adapts to your estimated half-life. EVERYWHERE YOU LOOK Home Screen widgets with the live curve, one-tap quick-log buttons, Lock Screen widgets, and a Live Activity that counts down to sleep-ready. PLAYS WELL WITH OTHERS Every drink is written to Apple Health and counts in Crunchly's food diary automatically. PERKLY PRO - PAY ONCE, YOURS FOREVER Full history beyond 3 days, trends across 30 to 365 days, and CSV export. Estimates based on typical values and your settings. Informational only, not medical advice. Part of the Bornly Family. Designed in Denmark. Terms of use: https://bornly.com/terms-of-service/ Medical Disclaimer: We are not doctors and do not give medical advice. Information in our app should not be used as a substitute for seeking medical advice from professional doctors. If you feel ill, experience pain, or have any concerns about your health, please contact your doctor or seek emergency care.
Screenshots
Verdict
The clearest difference is update cadence: Kailo at weekly against Perkly Caffeine Tracker's every 5 weeks. Kailo also leads on device support (4 vs 1) and iOS requirement (15.6 vs 26.0). On price, 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
Both are free to download. Kailo sells 1 in-app purchase, starting at $9.99 per month and Perkly Caffeine Tracker sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Kailo ships an update weekly, Perkly Caffeine Tracker every 5 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | Kailo | Perkly Caffeine Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (13 ratings) — better | — |
| Positive reviews | 25.0% of reviews | — |
| Number of ratings | 13 — better | — |
| Update frequency | Weekly — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone |
| Requires iOS | 15.6 — better | 26.0 |
| Further details — not scored | ||
| Size | 155 MB | 44 MB |
| Age rating | 4+ | 12+ |
| Developer | GetFast AI, Inc. | BORNLY ApS |
In-app purchases
Kailo
- GetFast Pro Monthly7 Days trial$9.991 Month
Perkly Caffeine Tracker
- Perkly Pro$5.99
Questions
Is Kailo free?
Is Perkly Caffeine Tracker free?
Do Kailo or Perkly Caffeine Tracker have ads?
Which is updated more often, Kailo or Perkly Caffeine Tracker?
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