Comparison

Otter Sleep vs Trace

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

Head to head
About

Otter Sleep

This app helps you sleep better by analyzing your sleep patterns and recording sounds like snoring and sleep talk. It features a cute companion named Nomi to make bedtime less lonely and offers sleep-inducing music and white noise to help you relax. Improve your sleep habits with personalized insights and a vitality development system.

Highlights
  • Sleep companion with virtual otter
  • Sleep-inducing music and white noise
  • Scientific sleep stage analysis
  • Sleep talk and snore recording
  • Vitality development system
  • Apple Health sync
Features
Read full description

Otter Sleep is your cozy bedtime companion, designed to help you relax, sleep peacefully, and build better sleep habits—one night at a time. Meet Nomi, your adorable sea otter friend. Every day, Nomi sets off on little adventures and returns at night with a new bedtime story, making each evening a little more comforting and special. Main Features ● Bedtime Stories Every night, Nomi brings home a new story from the day's adventure. Enjoy comforting bedtime tales that help you slow down, relax, and make bedtime something to look forward to. ● Sleep Audio Create your ideal bedtime atmosphere with personalized sleep stories, soothing white noise, relaxing nature sounds, and calming sleep music. ● Sleep Data Keep track of your nights with clear daily, weekly, and monthly sleep records. Easily look back on your sleep duration, bedtime, wake-up time, and other available sleep information over time. ● Sleep Recording Record nighttime sounds such as snoring and sleep talking, and review your sleep stages when available from Apple Health. Revisit your nights and discover more about what happens while you sleep. ● AI Sleep Companion Chat with your AI companion about sleep, bedtime routines, relaxation, and everyday wellness. Get friendly suggestions and inspiration to make your bedtime routine feel more comfortable and personal. ● Smart Alarms Wake up your way with Standard Alarms or Mission Alarms. Choose from different wake-up challenges to help you get out of bed and start your morning. ● Sleep Rituals Wind down with simple bedtime activities designed to help you relax and prepare for sleep. Build a calming nighttime routine that feels right for you. ● Nap & Meditation Take a break during the day with naps and calming meditation sessions, whether you need a quick recharge or a quiet moment to unwind. Why You'll Love Otter Sleep ● A cozy sea otter companion for bedtime ● Fresh bedtime stories to make every night special ● Sleep music, white noise, and relaxing sounds for every mood ● Simple daily, weekly, and monthly sleep records ● Gentle Sleep Rituals for a calmer bedtime routine ● Nap and meditation for moments of rest throughout the day ● Smart alarms that make mornings a little easier Whether you're winding down after a long day, enjoying a bedtime story, taking a quiet break, or getting ready for sleep, Nomi is here to make every moment of rest feel a little warmer. Privacy Policy:https://www.ottersleep.cn/privacy.html Terms of Service:https://www.ottersleep.cn/terms

About

Trace

Read full description

You already run the routine. trace keeps the record. Supplements in the morning, skincare at night, the gym three days a week — and progress photos scattered through your camera roll at different angles, in different light. When you ask "did the last 12 weeks change anything?", the honest answer is you can't tell. trace is a private regimen and progress journal. Define your stack, log it in one tap, capture aligned progress photos, and read your own timeline — all of it on your phone, none of it on a server. HOW IT WORKS • Add what you take and do — supplements, topicals, routines, anything. Unlimited items, no caps. • Log each item in one tap: taken, done, or skipped. Backdate when life happens. • Capture progress photos against a ghost overlay of your last photo — same angle, same light, actually comparable. • Check in with your weight and self-rated scores when you choose to. Optional, always skippable. • Read your timeline: photos, adherence, and check-ins on one axis. PRIVATE BY DESIGN • No account. trace never asks for an email address. • Local-first. Your photos and records stay on your phone. Nothing is uploaded, and no third-party SDK touches them. • Face ID app-lock, a neutral alternate icon, and notifications that reveal nothing. • Export everything (your photos plus a file of all your records) or delete everything, any time, at no charge. Your record is never held hostage. WHAT TRACE DOES NOT DO • No advice. trace never suggests what to take, how much, or how often. It records what you say you did. • No scores. trace never rates your appearance. It shows you your own record and lets you judge. • No streaks, no guilt, no cheering. Skipped days are just data. • No quiz before you start, no countdown timers, no tricks. WHY THE CORE IS FREE Unlimited items, one-tap logging, aligned photo capture, the full timeline, before/after pairs, check-ins, app-lock, export and delete — free, with no ads. The apps in this category cap your items or hold your own data behind a paywall. trace doesn't. TRACE+ (OPTIONAL) trace+ lines the record up for you: correlation overlays that chart your adherence against your own check-ins (and flag when more than one thing changed), the compare studio with side-by-side photo grids, per-item reminder cadences, formatted PDF progress reports, and multiple profiles. $4.99/month or $29.99/year ($2.50/month, billed annually), with a 7-day free trial on both plans. Cancel any time in two taps, and trace reminds you before every renewal. trace+ never gates the free core. HONEST BY DESIGN trace shows your records side by side; it can't tell you why something changed — and it says so. When more than one thing changed in the same period, trace flags it instead of drawing a tidy line. trace is for adults. You must be 18 or older to use it. Part of the Bramley family of honest apps. trace is a journal, not advice. It provides no medical, dosing, or treatment guidance. Talk to a qualified professional about anything you take. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Otter Sleep4 screens
Trace4 screens

Verdict

The call

Otter Sleep and Trace 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. Otter Sleep sells 10 in-app purchases, starting at $2.99 per 7 days and Trace 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

Otter Sleep ships an update every 2 weeks, Trace weekly. The most recent releases landed on October 18, 2026 and October 3, 2026 respectively.

ScorecardNo meaningful differences
Otter Sleep versus Trace: the parameters behind the verdict, then further details
ParameterOtter SleepTrace
PriceFreeFree
Rating4.8 (70 ratings) — better—
Positive reviews55.6% of reviews—
Number of ratings70 — better—
Update frequencyEvery 2 weeksWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone
Requires iOS16.016.0
Further details — not scored
Size146 MB39 MB
Age rating4+17+
DeveloperChongqing Cuyi Technology Co., LtdFuqiang UG (haftungsbeschrankt)

In-app purchases

10 purchases

Otter Sleep

Subscriptions10
  • weekly subscription$2.997 Days
  • weekly subscription$5.997 Days
  • weekly subscription$7.997 Days
Show 7 more
  • monthly subscription$7.991 Month
  • monthly subscription$9.991 Month
  • yearly subscription7 Days trial$14.991 Year
  • yearly subscription7 Days trial$17.991 Year
  • yearly subscription7 Days trial$29.991 Year
  • yearly subscription3 Days trial$29.991 Year
  • yearly subscription$29.991 Year
2 purchases

Trace

Subscriptions2
  • Trace Plus Monthly7 Days trial$4.991 Month
  • Trace Plus Yearly7 Days trial$29.991 Year

Questions

Is Otter Sleep free?
Otter Sleep is free to download, with in-app purchases available.
Is Trace free?
Trace is free to download, with in-app purchases available.
Do Otter Sleep or Trace have ads?
Neither Otter Sleep nor Trace shows ads.
Which is updated more often, Otter Sleep or Trace?
Otter Sleep ships an update every 2 weeks, and Trace weekly. Most recently, Otter Sleep was updated on October 18, 2026 and Trace on October 3, 2026.

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