Comparison

Pregnancy Tracker by Bloom vs Tether

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

Head to head
About

Pregnancy Tracker by Bloom

A private pregnancy tracker offering week-by-week baby development, daily logs for mood, sleep, and symptoms, and tools for planning your birth. It supports all pregnancy journeys with compassionate content and keeps your data secure on your device.

Highlights
  • Week-by-week baby development videos
  • Kick counter with session history
  • Contraction timer with frequency tracking
  • Daily mood, sleep, water, and symptom logs
  • Birth plan builder
  • Baby name explorer
  • Trimester nutrition guidance
Features
Read full description

Bloom is the calm, private pregnancy tracker that follows your journey week by week — no account, no sign-up, just you and your baby. Whether this is an easy pregnancy, a high-risk one, or a path through loss, Bloom meets you with care most apps don’t. WEEK-BY-WEEK • 3D baby development video for every week • Baby size, milestones, and what’s changing in your body EVERYDAY TRACKING • Kick counter with session history • Contraction timer with frequency tracking • Daily mood, sleep, water, and symptom logs • Weight gain tracking and appointment reminders PLAN & PREPARE • Birth plan builder • Baby name explorer with favorites • Trimester nutrition guidance PRIVATE BY DESIGN • No account required — ever • Your data stays on your device, synced privately across your iPhone, iPad, and Apple Watch FOR EVERY PREGNANCY Bloom handles high-risk, loss, and postpartum with compassion — gentle content that adapts to where you are, never tone-deaf. Start your journey with Bloom today.

About

Tether

This app allows partners to share pregnancy progress, including weekly updates, bump photos, and daily logs. It offers customizable tones and a clutter-free interface, focusing on essential tracking without ads or in-app purchases.

Highlights
  • Partner syncing for shared progress
  • Customizable app tones (Classic/Unhinged)
  • Week-by-week baby development visuals
  • Daily log for weight, water, mood, and meds
  • Bump photo timeline
  • Apple Health and Apple Watch integration
  • Home screen widgets
Features
Read full description

Most pregnancy apps are built for one person. This one is built for two. Send your partner one invite. From then on - your week, your bump photos, your daily log, and your vitals appear on his phone too, updating as you go. He sees everything and changes nothing. No account for him to make, no second app to buy. CHOOSE HOW IT TALKS TO YOU Two tones, and you can switch between them anytime. Classic is calm and straightforward. Unhinged is the same information with jokes and a hint of sarcasm. For example: Week 8 is "Uterus Grows" in Classic, and "Waistband Rebellion" in Unhinged. In week 25, baby is the size of a rutabaga - or "a bottle of wine, unopened, obviously." The medical details underneath never change. Only the tone does. QUIET, NOT CLUTTERED Open most pregnancy apps and you get a feed, a forum, a shop, a streak, and a red badge asking you to come back. Tether has six tabs and nothing to sell you. It's built to look like the rest of your iPhone — plain type, soft colors, one thing per screen — so checking in takes seconds and asks nothing of you on a bad day. SEE BABY GROW, AND TAP IT Every week has its own illustration, from a curled embryo at week 4 to a full-term baby at 40. Tap it and it wiggles. Around it: what's developing this week, how big baby is right now, and what's happening in your body, not just the baby's. THE DAILY LOG Weight, with a chart and your change since yesterday, this week, and per week on average Water, against a goal you set Medications and vitamins, dose by dose Mood, up to eight a day, because some days are complicated A note for the day, on paper that looks like paper CRAVINGS Log what you're craving and he's told while it's still true — so if he's near a shop, he knows. They stop counting after six hours. BUMP PHOTOS, EVERY TWO WEEKS Each one unlocks as you reach it, and a carousel swipes through your whole shape-shifting year. He sees each new one appear. APPLE HEALTH AND APPLE WATCH Your weight comes in from Apple Health on its own, so you don't type it twice. If you wear an Apple Watch, your latest heart rate and blood oxygen show up on your page - and on his. There's a watch app too. Log water, medications, weight and mood from your wrist, see the week and days left without your phone, and keep the countdown on your watch face. ON YOUR HOME SCREEN Widgets for the current week, a countdown to your due date, and this week's illustration. MAKE IT YOURS Six themes with matching app icons, a nickname for baby that the whole app picks up, and reminders for water, medications and bump photos. NO ACCOUNT. NO SERVER. NO ADS. There is no Tether account, because there is no Tether server. Everything you log stays on your phone and in your own iCloud, and the only person who ever sees it is the partner you invite. Nothing is sold, because there is nobody to sell it to. ALSO INSIDE A trimester checklist for the things that are easy to forget Your week-by-week journey, for baby and for you Export everything as a spreadsheet, for your records or an appointment Tether shares general information about pregnancy, not medical advice. Always follow your doctor or midwife.

Screenshots

Pregnancy Tracker by Bloom4 screens
Tether4 screens

Verdict

The call

The clearest difference is in-app purchases: Tether at none against Pregnancy Tracker by Bloom's 1. Tether also leads on update cadence (every 3 days vs every 11 days) and ratings volume (4 vs 1). On price, rating, ads and device support 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. Pregnancy Tracker by Bloom sells 1 in-app purchase, starting at $19.99 per month. Tether asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Pregnancy Tracker by Bloom against 5.0 for Tether. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

UpkeepUpdate frequency

Pregnancy Tracker by Bloom ships an update every 11 days, Tether every 3 days. Both last shipped on October 31, 2026.

Scorecard4 real differences · 6 level
Pregnancy Tracker by Bloom versus Tether: the parameters behind the verdict, then further details
ParameterPregnancy Tracker by BloomTether
PriceFreeFree
Rating5.0 (1 ratings)5.0 (4 ratings)
Positive reviews—100.0% of reviews
Number of ratings14 — better
Update frequencyEvery 11 daysEvery 3 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPad, Apple Watch — betteriPhone, Apple Watch
Requires iOS17.0 — better18.0
Further details — not scored
Size114 MB44 MB
Age rating4+17+
DeveloperABHIJITH NCJames Zamora

In-app purchases

1 purchases

Pregnancy Tracker by Bloom

Subscriptions1
  • Bloom Premium Monthly7 Days trial$19.991 Month
None

Tether

No in-app purchases

Questions

Is Pregnancy Tracker by Bloom free?
Pregnancy Tracker by Bloom is free to download, with in-app purchases available.
Is Tether free?
Tether is free to download, with no in-app purchases.
Which has better reviews, Pregnancy Tracker by Bloom or Tether?
Pregnancy Tracker by Bloom and Tether are both rated 5.0 out of 5 on the App Store, from 1 and 4 ratings respectively.
Do Pregnancy Tracker by Bloom or Tether have ads?
Neither Pregnancy Tracker by Bloom nor Tether shows ads.
Which is updated more often, Pregnancy Tracker by Bloom or Tether?
Pregnancy Tracker by Bloom ships an update every 11 days, and Tether every 3 days. Most recently, Pregnancy Tracker by Bloom was updated on October 31, 2026 and Tether on October 31, 2026.

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