Comparison

Maybe Baby™ Fertility Tracker vs Sync Spin

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

Head to head
About

Maybe Baby™ Fertility Tracker

Track your menstrual cycle, predict ovulation, and identify fertile windows. This app offers insights into potential pregnancy and even suggests the likely gender of your baby. It supports multiple languages and is updated regularly.

Highlights
  • Period tracking
  • Ovulation prediction
  • Fertile window identification
  • Pregnancy possibility indicator
  • Baby gender prediction
  • Multilingual support
Features
Read full description

MUST HAVE APP #1 FOR EVERY WOMAN! -it shows if you could get pregnant today -if it would be a boy or a girl and -when your next period & ovulation. -it supports the following languages: English (US), English (UK), French, German, Italian, Japanese, Russian and Spanish ~more than 4,500,000 people use it already~ ~Constant FREE updates~ Dedicated to My Wife and my Baby With Love. This App Helped my Wife and Me to Conceive our Baby on October 2009 :) I Hope it Will Help You Too. For more information or support, please visit http://www.bazilsoft.com Best Cool & Funny Games For Girls & Kids! Touch Top Fun! _____________________________________________ ** DON'T MISS OUR OTHER EXCITING APPS! ** Abby Ball™, Attack Balls™, Bubble Burst™, Alison Baby Monitor, Take Pills Pill Reminder GIFT THIS APP: Click the “Buy App” arrow on the iTunes® App Store Copyright 2024 Bazilsoft

About

Sync Spin

This app enhances indoor cycling workouts by connecting to Echelon smart bikes. It provides real-time metrics, detailed summaries, and historical insights to help users track progress and achieve fitness goals.

Highlights
  • Real-time metrics tracking
  • Detailed workout summaries
  • HealthKit integration
  • Interactive charts
  • Historical insights
  • Customizable dashboard
Features
Read full description

Take your indoor cycling experience to the next level with Sync Spin, the powerful workout companion designed specifically for Bluetooth-connected Echelon smart indoor cycles. Whether you’re training for performance or riding for fun, Sync Spin tracks your progress, visualizes your data, and helps you achieve your fitness goals. Key Features: • Real-Time Metrics Tracking: Monitor Cadence, Speed, Power, Resistance, Distance and more, live during your workout. Enjoy a seamless connection with your Echelon smart bike via Bluetooth. • Detailed Workout Summaries: View Average Metrics for Speed, Cadence, Power, and Resistance. See your Maximum Metrics achieved during your ride. Track total Distance and Elapsed Time. • HealthKit Integration: Sync your workouts with Apple Health to track your Heart Rate, Calories Burned, and Workout Effort Score alongside your cycling data. • Interactive Charts: Visualize your workout with beautiful, interactive line and step charts. Toggle visibility for metrics you care about: Speed, Cadence, Power, and Resistance. • Historical Insights: Browse past workouts grouped by month. Easily compare sessions and track progress over time. • Customizable Dashboard: Reorder your key metrics display to prioritize the stats that matter most to you. • Intelligent Aggregation: Data points are dynamically aggregated to ensure smooth chart performance, even during long workouts. • Insights Tab: Gain deeper performance insights with a dedicated view of your top workouts across key metrics like Speed, Cadence, Power, and Resistance. Analyze total stats, averages, and workout distribution over time, track your long-term progress with interactive graphs showcasing trends and historical comparisons, and stay motivated with streak tracking to keep your momentum going. • Quick Access & Shortcuts: Stay connected to your workouts with Home Screen Widgets, Control Center integration, and Shortcuts support, making it easier than ever to start a ride, track progress, and access key stats with just a tap. Important Note: This application is designed to be used with an Echelon Bluetooth-connected smart indoor cycle. Please note that not all bike models have been tested for compatibility. Download Sync Spin today and start riding smarter, stronger, and more efficiently! Privacy Policy & Terms: https://www.rspoon3.com/sync-spin/privacy

Screenshots

Maybe Baby™ Fertility Tracker1 screens
Sync Spin4 screens

Verdict

The call

The clearest difference is price: Sync Spin at Free against Maybe Baby™ Fertility Tracker's $4.99. Sync Spin also leads on in-app purchases (none vs 3) and rating (5.0 vs 4.7). Maybe Baby™ Fertility Tracker's advantage is ratings volume (1.1K vs 10) and chart position (#61 vs unranked). On ads 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

Sync Spin is free to download; Maybe Baby™ Fertility Tracker costs $4.99 up front. Maybe Baby™ Fertility Tracker sells 3 one-off in-app purchases. Sync Spin asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Sync Spin holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Maybe Baby™ Fertility Tracker has 1.1K ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 85% of Maybe Baby™ Fertility Tracker's written reviews are positive against 100% of Sync Spin's.

UpkeepUpdate frequency

Maybe Baby™ Fertility Tracker ships an update every 4 months, Sync Spin monthly. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

Scorecard9 real differences · 2 level
Maybe Baby™ Fertility Tracker versus Sync Spin: the parameters behind the verdict, then further details
ParameterMaybe Baby™ Fertility TrackerSync Spin
Price$4.99Free — better
Rating4.7 (1.1K ratings)5.0 (10 ratings) — better
Positive reviews85.3% of reviews100.0% of reviews — better
Number of ratings1.1K — better10
Update frequencyEvery 4 monthsMonthly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank#61 — better—
DevicesiPhoneiPhone, iPad, Apple Watch — better
Requires iOS17.017.0
Further details — not scored
Size10 MB27 MB
Age rating4+4+
DeveloperBazilSoftRichard Witherspoon

Customer experience

Maybe Baby™ Fertility Tracker

All ratings1,048 ratings
Positive92.7%
Neutral3.2%
Negative4.1%
Written reviews742 reviews
Positive85.3%
Neutral4.6%
Negative10.1%

Sync Spin

All ratings10 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Maybe Baby™ Fertility Tracker

Reported bugs

2 issues
  • Inconsistent cycle tracking when updating start date
  • Glitches in gender prediction functionality

Requested features

3 requests
  • Add ability to input ovulation test results
  • Provide more detailed cycle analysis and insights
  • Allow editing of previous cycle data

Sync Spin

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Maybe Baby™ Fertility Tracker

One-time3
  • 1 month subscription$4.99
  • 3 months subscription$11.99
  • 12 months subscription$29.99
None

Sync Spin

No in-app purchases

Questions

Is Maybe Baby™ Fertility Tracker free?
Maybe Baby™ Fertility Tracker costs $4.99, and also offers in-app purchases.
Is Sync Spin free?
Sync Spin is free to download, with no in-app purchases.
Which has better reviews, Maybe Baby™ Fertility Tracker or Sync Spin?
Sync Spin is rated higher. Maybe Baby™ Fertility Tracker averages 4.7 out of 5 from 1.1K ratings, while Sync Spin averages 5.0 from 10 ratings.
Do Maybe Baby™ Fertility Tracker or Sync Spin have ads?
Neither Maybe Baby™ Fertility Tracker nor Sync Spin shows ads.
Which is updated more often, Maybe Baby™ Fertility Tracker or Sync Spin?
Maybe Baby™ Fertility Tracker ships an update every 4 months, and Sync Spin monthly. Most recently, Maybe Baby™ Fertility Tracker was updated on November 1, 2026 and Sync Spin on October 30, 2026.

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