Comparison

Rayyan vs Energizer AI

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

Head to head
About

Rayyan

This app streamlines systematic literature reviews for researchers, enabling quick article screening and decision-making on mobile devices. It supports offline work and real-time collaboration, significantly reducing review time.

Highlights
  • Offline article screening
  • Real-time collaboration
  • Quick inclusion decisions
  • Reference labeling
  • Article filtering
  • Configurable settings
Features
Read full description

The Most Advanced Systematic Literature Review App If you conduct research, Rayyan is the app for you. It accelerates systematic literature reviews in support of all types of evidence-based research. Developed by researchers, for researchers, Rayyan offers a quick and easy way to screen articles on the go, and it even works offline! Key Features: - Work online for real-time collaboration. - Download your reviews to work on the go or offline. - Swipe left or right to make inclusion decisions quickly. - Label references by selecting or adding labels. - Filter references with the touch of a button. - Configure and save your settings to work however you like. Save Your Valuable Time, Reduce Your Frustration, and Increase Your Productivity Rayyan is designed to guide you through article screening by enabling quick decisions and label applications on each article. You won’t believe how easy it is to use! Researchers report reducing the time spent on their reviews by 50%-80% or more using Rayyan. Enjoying real-time collaboration with fellow researchers has never been easier. Rayyan records every decision for you. The app even functions when you’re offline, so you can always rely on Rayyan to make the most of your valuable time. We welcome your feedback about the app. You can contact us anytime via email at support@rayyan.ai or on Twitter @rayyanapp. Terms of Use: https://www.rayyan.ai/terms-of-service Privacy Policy: https://www.rayyan.ai/privacy_policy/

About

Energizer AI

Features
Read full description

I was just like you once. I used to sleep all day and only got up to eat. But everything changed when I downloaded Energizer AI. These days I'm known as the world's most motivated panda. My name is Bamboo, and I'm your personal energy coach. You know that feeling when it's 2 PM, your brain has completely checked out, and you're staring at a report you were supposed to finish an hour ago? That's not laziness. That's bad scheduling. You were given the wrong task at the wrong time — and Bamboo is here to fix that with a smarter approach to daily planning. ENERGY-AWARE SCHEDULING Most productivity apps tell you what to do. Bamboo is a smart routine planner that tells you when to do it. Log your energy levels throughout the day — it takes 10 seconds — and our AI builds a schedule around YOUR natural rhythm. It acts as your personal habit tracker to balance your day: • Deep work when you're sharpest. • Admin when you're coasting. • Rest when you're running on empty to prevent burnout. No more forcing focus when your brain wants to sleep, and no more wasting peak hours on emails. YOUR AI COACH Tell Bamboo what's on your plate today. He'll figure out the rest. Share your tasks, how long they take, how draining they are — and the AI routine planner generates a personalized schedule matched to your energy forecast. The more you log, the smarter your habit tracker gets. Over time, Bamboo learns your patterns, predicts your dips before they hit, and adjusts your schedule accordingly. ENERGY TRACKING THAT ACTUALLY STICKS No complicated forms. No lengthy check-ins. Just a quick energy log whenever you feel a shift — and Bamboo takes it from there. Watch your Energy Flow graph evolve throughout the day. See your highs, your dips, and your patterns emerge over weeks. You'll start to understand your own productivity in a way no other daily planner app has ever shown you. SMART NOTIFICATIONS Bamboo doesn't spam you. He nudges you at the right moments — before an energy dip hits, when a high-focus task is coming up, or when you haven't logged in a while. Notifications that actually help, not ones you immediately swipe away. ACHIEVEMENTS & PROGRESS Stay motivated with streaks, badges, and monthly report cards. Watch Bamboo transform from a sleepy, eye-rubbing panda into a fully energized, backflip-doing productivity machine — the more consistent you are, the more alive he gets. Unlock badges for morning productivity, perfect weeks, long streaks, and more. Your achievements page shows deep insights: which hours you perform best, how your energy levels correlate with task completion, and how this month stacks up against the last. DEEP INSIGHTS Bamboo doesn't just track — he analyses. Discover that you complete 3x more tasks on high-energy mornings. Find out that Tuesday is your most productive day. Learn that your energy crashes every afternoon at 2 PM without exception. These aren't generic tips — they're observations drawn directly from your own data, surfaced by AI, and presented in plain language you can actually act on. BUILT FOR REAL LIFE Works across all your devices. Syncs automatically. Respects your schedule and your time. No overwhelming features you'll never use. Just a clean, focused experience designed around one idea: the right task at the right time changes everything. PANDAS ARE LAZY. YOU DON'T HAVE TO BE. Bamboo started out just like every other panda — horizontal, unbothered, treating bamboo consumption as a full-time job. Then he discovered energy-aware scheduling. Now he's the most productive panda in the world, and he's convinced you can be too. Download Energizer. Log your energy. Build your best schedule. Let's get to work. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Rayyan4 screens
Energizer AI4 screens

Verdict

The call

Rayyan and Energizer AI are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Rayyan sells 13 in-app purchases, starting at $9.99 per month and Energizer AI sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Rayyan ships an update every 5 weeks, Energizer AI every 3 weeks. The most recent releases landed on October 25, 2026 and October 6, 2026 respectively.

ScorecardNo meaningful differences
Rayyan versus Energizer AI: the parameters behind the verdict, then further details
ParameterRayyanEnergizer AI
PriceFreeFree
Rating3.8 (24 ratings) — better—
Positive reviews37.1% of reviews—
Number of ratings24 — better—
Update frequencyEvery 5 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.0 — better
Further details — not scored
Size36 MB48 MB
Age rating17+4+
DeveloperRayyan Systems, Inc.FORGE TECH

In-app purchases

13 purchases

Rayyan

Subscriptions13
  • Student Monthly$9.991 Month
  • Professional Monthly$14.991 Month
  • Student Quarterly$24.993 Months
Show 10 more
  • Essential Quarterly$24.993 Months
  • Professional Quarterly$39.993 Months
  • Advanced Quarterly$39.993 Months
  • Student Annual$59.991 Year
  • Essential Annual$59.991 Year
  • Advanced Quarterly 2 Seats$79.993 Months
  • Professional Annual$99.991 Year
  • Advanced Annual$99.991 Year
  • Advanced Quarterly 4 Seats$159.993 Months
  • Advanced Annual 5 Seats$499.991 Year
2 purchases

Energizer AI

Subscriptions2
  • Energizer Pro Monthly$7.991 Month
  • Energizer AI pro yearly$69.991 Year

Questions

Is Rayyan free?
Rayyan is free to download, with in-app purchases available.
Is Energizer AI free?
Energizer AI is free to download, with in-app purchases available.
Do Rayyan or Energizer AI have ads?
Neither Rayyan nor Energizer AI shows ads.
Which is updated more often, Rayyan or Energizer AI?
Rayyan ships an update every 5 weeks, and Energizer AI every 3 weeks. Most recently, Rayyan was updated on October 25, 2026 and Energizer AI on October 6, 2026.

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