Comparison

Soso vs Ondelle

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

Head to head
About

Soso

This app helps young girls understand puberty and track their menstrual cycles. It provides age-appropriate information, predicts the first period, and logs symptoms and moods without pressure.

Highlights
  • Predicts first period arrival
  • Tracks puberty stages
  • Logs cycle flow and spotting
  • Records moods and symptoms
  • Provides age-appropriate explanations
  • Offers daily check-ins and prompts
  • Visual calendar and history view
Features
Read full description

Soso is the first period tracker that starts before the first period. It follows the signs of puberty, estimates when hers is coming, and becomes a full cycle tracker from there. A place to learn and observe, without pressure, noise, or adult-focused content. Safe and clear both for the girls using it and the parents guiding them. We built Soso as parents. When our daughter started asking about her body, every app we found was made for adults, with language and features that were wrong for a first experience. What Soso helps with: - Soso focuses on understanding and learning first, then tracking comes naturally - Learn about cycle changes with clear, age-appropriate explanations - Build the habit of noticing and logging periods - Reduce anxiety by providing information at your pace - Create space for conversations between parents and kids Visual cycle tracking - Log periods with simple taps - Visual cues and colors to reflect flow intensity - Log spotting and discharge too, not only period days - Add a note to any day, in her own words - Clear calendar view to see cycles over time - Easy access to past logs and history Daily guidance, gently - Smart daily check-ins during a period - Helpful prompts that guide without forcing answers - No pressure to log everything perfectly - The period tracker adapts over time as more data is added Mood & symptoms - Log symptoms like cramps, headaches, tiredness, bloating and hay fever - Optional mood logging, with simple icons and language - Encourages self-reflection without judgment - Helps connect how the body feels across the cycle “When is my first period coming?” It is the question girls ask us hundreds of times a week, and the one most period apps cannot answer, because they only start working once periods do. Soso answers it. A few questions at the start, and she gets an estimate of when her first period is likely to arrive, in words written for her age. Then it narrows. Every sign she records pulls the window tighter, which is how predicting a first period is actually done: not one guess, but changes followed over time. The First Period Prediction Pack - Follow her development through the illustrated stages of puberty, for breast development and for pubic hair. She compares the drawings privately and picks the closest, the same stages a doctor would use. - Measure her height once a month. A growth spurt is one of the strongest signs a first period is close, and almost no period tracker follows it. - Check-ins on what is changing through puberty - A Signs tab showing how far along she is toward menarche and what usually comes next - An estimate that narrows with everything she adds A one-time purchase, yours for good. Built for families - No adult content - Private by design How Soso works Always free: logging your mood, a quiz a day, and a first estimate of when your period might arrive if it has not started yet. You also begin with 5 Drops for marking your cycle. Soso Plus adds unlimited marking and quizzes, predictions for your next cycles, notes, and the First Period Prediction Pack. It renews monthly or yearly, and you can cancel any time. Questions? Concerns? Suggestions? Get in touch via the app or our support URL on our app page. -------- Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Ondelle

Track your menstrual cycle, log symptoms, and view predictions privately. Offers detailed insights, pregnancy tracking, and birth control reminders with optional premium features.

Highlights
  • Period and symptom logging
  • Calendar view with fertile days
  • Cycle pattern insights
  • Pregnancy week tracking
  • Birth control reminders
  • Private data export and erasure
Features
Read full description

Meet Ondelle, a private period calendar designed to help you keep your history close. START FREE • Log when a period starts and ends, and record symptoms • See your logged dates and estimated fertile days on a clear calendar after two period starts • Take an optional illustrated tour and choose a profile illustration • Use privacy controls, app lock, manual full-data export and restore, and data erasure without a purchase EXPLORE ONDELLE PREMIUM • Read a Cycle Brief with dated observations from your own entries • Record mood, flow, temperature, cervical mucus, and ovulation-test results • Review cycle patterns and Insights • Follow pregnancy weeks with general guidance, check-ins, reminders, and a private journal • Create a personal report for appointments • Save protected recovery snapshots on this device with Memory Vault • Record a birth-control method and personal dates; set a one-time reminder for the next change, injection, check, or replacement date you enter Choose a monthly or annual subscription, or a lifetime purchase. Prices and any eligible introductory offer appear in the App Store purchase sheet. Restore Purchases is available in the app. Existing Ondelle 1.0 profiles keep access to the features previously available to them. Your health entries stay on your device unless you choose to export them. No email, phone number, or cloud account is required. Apple and RevenueCat process purchase information to verify Premium access. Ondelle is a wellness and education tool. Predictions are estimates and do not confirm ovulation; they are not contraception, medical advice, or diagnosis. Consult a qualified healthcare professional for medical questions. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Soso4 screens
Ondelle4 screens

Verdict

The call

The clearest difference is update cadence: Ondelle at daily against Soso's every 9 days. Ondelle also leads on rating (5.0 vs 4.7). Soso's advantage is ratings volume (854 vs 1). On price, review sentiment, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Soso sells 5 in-app purchases, starting at $9.99 per month and Ondelle sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Ondelle holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Soso has 854 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 93% of Soso's written reviews are positive against 100% of Ondelle's.

UpkeepUpdate frequency

Soso ships an update every 9 days, Ondelle daily. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
Soso versus Ondelle: the parameters behind the verdict, then further details
ParameterSosoOndelle
PriceFreeFree
Rating4.7 (854 ratings)5.0 (1 ratings) — better
Positive reviews92.6% of reviews100.0% of reviews — better
Number of ratings854 — better1
Update frequencyEvery 9 daysDaily — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS15.115.0 — better
Further details — not scored
Size77 MB16 MB
Age rating4+17+
DeveloperBeyond Analytics Ltdaskj enterprises llc

Customer experience

Soso

All ratings827 ratings
Positive94.1%
Neutral2.7%
Negative3.3%
Written reviews121 reviews
Positive92.6%
Neutral2.5%
Negative5.0%

Ondelle

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

5 purchases

Soso

Subscriptions4
  • Soso Plus: Monthly$9.991 Month
  • Soso Plus: Monthly7 Days trial$9.991 Month
  • Soso Plus: Yearly$49.991 Year
Show 1 more
  • Soso Plus: Yearly7 Days trial$49.991 Year
One-time1
  • First Period Prediction$9.99
3 purchases

Ondelle

Subscriptions2
  • Ondelle Premium Monthly$3.991 Month
  • Ondelle Premium Annual14 Days trial$29.991 Year
One-time1
  • Ondelle Premium Lifetime$79.99

Questions

Is Soso free?
Soso is free to download, with in-app purchases available.
Is Ondelle free?
Ondelle is free to download, with in-app purchases available.
Which has better reviews, Soso or Ondelle?
Ondelle is rated higher. Soso averages 4.7 out of 5 from 854 ratings, while Ondelle averages 5.0 from 1 ratings.
Do Soso or Ondelle have ads?
Neither Soso nor Ondelle shows ads.
Which is updated more often, Soso or Ondelle?
Soso ships an update every 9 days, and Ondelle daily. Most recently, Soso was updated on November 9, 2026 and Ondelle on October 31, 2026.

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