Comparison

SumOne vs WaveCrest

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

Head to head
About

SumOne

This app offers daily questions to help couples deepen their connection and learn more about each other. It features a virtual companion to raise, customizable interiors, and tools to track emotions and anniversaries.

Highlights
  • Daily discovery questions
  • Virtual companion (EggMon)
  • Customizable room interiors
  • Send cute notes (Memos)
  • Emotion tracker
  • Anniversary counter
  • Home screen widgets
Read full description

**Already 6 Million people are learning more about their partners through SumOne! Will you join us and start your own journey?** Get together with the one who makes your heart flutter, create a space to raise a new friend together, and discover something about each other every day! ● SumOne’s main features! [A daily discovery] Every day at a time of your choice, SumOne gives you and your partner a question - ranging from deep and introspective to cute and surprising! It’s a chance for you to share more about who you truly are, learn about your partner’s heart and soul, and strengthen your bond! [A new companion] Welcome EggMon on your journey! This sweet little egg is fascinated by Love and can't help but be interested in your relationship! Help it grow and hatch into a surprising new form by sharing your honest answers on the Daily Question! [Interior] With the pebbles (in-app currency) you collect together within the app, you can buy various items to decorate little EggMon’s room! Head over to the shop and select your items from the various themes available. Keep your eyes peeled for the seasonal themes only available for a limited time! ● There's so much more! - [Send each other cute notes] Get a Memo and stick it up on the Main Screen! Your partner will be delighted to read your thoughts of the day - [Discover EggMon’s past] EggMon kept a diary of his quest for Love. Get a new page and read it together! - [Birth Certificate] It is clear that EggMon is here to stay…How about officially registering its cute nickname? - [Emotion Tracker] Every time you answer a question, you can select and share how you’re feeling that day. At the end of the month, our little helper (and EggMon’s best friend) Hakoo will gather it all and share the record of your love with you! - [The most important day] Keep track of your anniversary! We count the days since you decided to be together. - [Have it all on your home screen] Use our Memo or Anniversary widgets to keep a cute reminder of your love right on your screen! Make new memories and deepen your ties with your partner with SumOne! Contact us : [contactus@monymony.co] Mobile: +82 103255561 Instagram : @sumone.global Homepage : [https://www.sumone.co/en/] End User License Agreement (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

WaveCrest

Features
Read full description

WaveCrest combines a companion timer for intense moments with a private, on-device self-care journal for what happened afterward. ・Start companion mode with one tap Follow a quiet ocean animation, optional paced breathing, haptics, and an elapsed timer. Use breathing guidance only at a pace that feels comfortable for you. ・Record observable details afterward Optionally save intensity changes, duration, triggers, symptoms, and coping actions. Review each completed episode as a rise, crest, and fall curve. ・Build your own evidence archive See counts of episodes you marked complete, average and median duration, time to peak, and calm intervals. Create a shareable evidence card or export your records. ・Ten built-in learning cards Read short, offline explanations about body responses, breathing, attention, and safety behaviors. Records stay on device and no account is required. Supported screens may show a bottom banner; full-screen ads may appear only at natural pauses after a record is saved or skipped. An optional one-time Remove Ads purchase hides both formats. WaveCrest is a self-care journal and companion timer, not a medical device. It does not diagnose, treat, or provide emergency help. Seek medical or emergency care for new, severe, or unusual symptoms.

Screenshots

SumOne4 screens
WaveCrest4 screens

Verdict

The call

SumOne and WaveCrest are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support 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. SumOne sells 10 in-app purchases, starting at $5.99 per month and WaveCrest sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
SumOne versus WaveCrest: the parameters behind the verdict, then further details
ParameterSumOneWaveCrest
PriceFreeFree
Rating4.9 (19K ratings) — better—
Positive reviews73.9% of reviews—
Number of ratings19K — better—
Update frequencyEvery 6 days—
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone
Requires iOS16.0 — better17.0
Further details — not scored
Size271 MB6 MB
Age rating4+4+
Developersandfox丽佳 施

Bugs and requests

SumOne

Reported bugs

5 issues
  • App crashes on launch
  • Pebbles (in-game currency) disappearing
  • Inability to open app on certain networks
  • Syncing issues between partners
  • Notification and timer problems

Requested features

5 requests
  • Add autocorrect feature
  • Increase character limit for responses
  • Introduce more ways to earn in-game currency
  • Add mini-games or activities for couples
  • Provide a web/desktop version of the app

WaveCrest

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

SumOne

Subscriptions3
  • Monthly subscription$5.991 Month
  • Annual subscription7 Days trial$29.991 Year
  • Annual subscription$29.991 Year
One-time7
  • Gem - 2500$1.99
  • Gem - 5500$2.99
  • SHUYA&TOYA's Autumn$4.99
Show 4 more
  • Gem - 9900$5.99
  • 썸원골드(얼리버드)$11.99
  • Gem - 19000$11.99
  • 썸원골드$14.99
1 purchases

WaveCrest

One-time1
  • Remove Ads$0.99

Questions

Is SumOne free?
SumOne is free to download, with in-app purchases available.
Is WaveCrest free?
WaveCrest is free to download, with in-app purchases available.
Do SumOne or WaveCrest have ads?
Both SumOne and WaveCrest show ads.

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