Comparison

burrow sleep vs RepLens

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

Head to head
About

burrow sleep

Features
Read full description

A bedtime story you can read in the morning. Burrow fills in the missing pages between lights out and waking up: the quiet stretches, the restless ones, and the small interruptions you don't remember. CHAPTERS OF YOUR NIGHT • Session Setup — A calm start screen with phone and watch activity ready to go • Sleep Journey — A scrollable timeline of wakefulness, restless stretches, and your longest block of calm • Sound Breakdown — Every sound from the night, grouped: breathing, snoring, ambient, talking, bed movement • Labeled Audio Playback — Tap any moment to play it back, with an automatic label you can correct • AI Session Summary — A plain-language morning read, plus a chat for questions like "what woke me at 3 a.m.?" or "how did last night compare to this week?" • Sleep Insights — A weekly view where patterns start to take shape YOUR STORY STAYS YOURS Sound classification runs on your device. Audio, motion, and session history stay on your phone. PAIRS WITH APPLE WATCH Heart rate and motion from the Watch sit alongside the audio timeline. PREMIUM The core night view is free. Sound Breakdown, analytics, and the AI summaries are part of Burrow Premium. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

RepLens

Get personalized feedback on your weightlifting form using AI. Simply record a set, and receive clear, actionable advice to improve technique and prevent injuries. See your form compared to an ideal model for better understanding.

Highlights
  • AI form analysis
  • Specific lift feedback
  • Injury prevention tips
  • Ideal form comparison
  • Pain-focused adjustments
  • On-device body tracking
Features
Read full description

Bad lifting form doesn't just stall your progress - it's what wrecks your joints. RepLens is your pocket form coach: record or photograph a set, and in seconds you get clear, specific feedback on what to fix and why. HOW IT WORKS 1. Pick your lift (squat, bench, deadlift, overhead press, row, pull-ups, dips, push-ups) 2. Add a photo or a short video from the side 3. RepLens tracks your body, finds your key rep, and grades your form 4. Get ranked, plain-English fixes - plus an AI-generated "ideal form" photo so you can SEE the correction on your own body BUILT TO CATCH WHAT MATTERS - On-device body tracking finds your deepest, most telling rep - Coaching judged against proven strength-training principles, not vague tips - Prioritized corrections, most important first - no jargon - A side-by-side "your rep vs. ideal form" so the fix actually clicks TRAIN AROUND YOUR PAIN Tell RepLens where you hurt - knees, lower back, shoulders - and it pays extra attention there, flagging the corrections most likely tied to your pain. Turn it off when the ache is gone. WHO IT'S FOR Whether you're new to the barbell or chasing a PR, RepLens gives you the second set of eyes most lifters never have - without a coach's price tag or a gym mirror full of guesswork. Your first analysis is free. RepLens Pro unlocks unlimited analyses on every lift. --- RepLens Pro is an auto-renewing subscription. - 7-day free trial, then $4.99/month or $29.99/year - Payment is charged to your Apple ID at confirmation of purchase - Auto-renews unless canceled at least 24 hours before the end of the current period - Manage or cancel anytime in your Apple ID settings Privacy Policy: https://docs.google.com/document/d/1LtePaM24gEgSJ6YCspb37dWz5g87WZjdCedKyWmzls0/edit?usp=sharing Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ RepLens gives general technique feedback for informational purposes and is not medical advice.

Screenshots

burrow sleep4 screens
RepLens3 screens

Verdict

The call

The clearest difference is update cadence: RepLens at every 3 days against burrow sleep's every 2 months. burrow sleep's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement 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. burrow sleep sells 3 in-app purchases, starting at $5.00 per month and RepLens sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

burrow sleep ships an update every 2 months, RepLens every 3 days. The most recent releases landed on October 7, 2026 and September 28, 2026 respectively.

Scorecard2 real differences · 8 level
burrow sleep versus RepLens: the parameters behind the verdict, then further details
Parameterburrow sleepRepLens
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 2 monthsEvery 3 days — better
AdsNoNo
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS17.017.0
Further details — not scored
Size20 MB18 MB
Age rating4+4+
DeveloperShawn BarrNicholas Oganesoff

In-app purchases

3 purchases

burrow sleep

Subscriptions3
  • Monthly7 Days trial$5.001 Month
  • 3 Months$12.003 Months
  • Annual$40.001 Year
2 purchases

RepLens

Subscriptions2
  • RepLens Pro (Monthly)7 Days trial$4.991 Month
  • RepLens Pro (Annual)7 Days trial$29.991 Year

Questions

Is burrow sleep free?
burrow sleep is free to download, with in-app purchases available.
Is RepLens free?
RepLens is free to download, with in-app purchases available.
Do burrow sleep or RepLens have ads?
Neither burrow sleep nor RepLens shows ads.
Which is updated more often, burrow sleep or RepLens?
burrow sleep ships an update every 2 months, and RepLens every 3 days. Most recently, burrow sleep was updated on October 7, 2026 and RepLens on September 28, 2026.

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