Comparison

Bloom Pregnancy App vs Tether

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

Head to head
About

Bloom Pregnancy App

Features
Read full description

Bloom is a calm, private companion for your pregnancy — from your first positive test to the day you meet your baby. Follow your journey week by week with clear, reassuring updates on your baby's growth and the changes in your body. Everything lives on your device: no account, no sign-up, no internet required. Your most personal moments stay yours. FEATURES • Week-by-week guide to your baby's development and size • Personalized countdown to your due date • Kick counter to track your baby's movements • Private journal for your feelings, symptoms, and memories • Pregnancy weight tracking • Medical appointment calendar with reminders • Medication and vitamin tracker with a reminder for every dose • Hospital bag checklist you can fully edit • Home Screen widgets to see your progress at a glance • Available in Spanish, English and Portuguese • 100% offline and private — your data never leaves your phone Bloom is free to download and start using. Unlock every feature forever with a single one-time purchase — no subscriptions, no recurring charges, ever. Bloom is an informational companion, not a medical device. The figures shown are statistical averages by gestational week. Always consult your doctor with any questions about your pregnancy. Your pregnancy is one of a kind. Bloom is here to walk beside you, week by week.

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

Bloom Pregnancy App4 screens
Tether4 screens

Verdict

The call

The clearest difference is in-app purchases: Tether at none against Bloom Pregnancy App's 1. On price, update cadence, 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. Bloom Pregnancy App sells 1 one-off in-app purchase. Tether asks for nothing beyond the download.

UpkeepUpdate frequency

Bloom Pregnancy App ships an update every 5 days, Tether every 3 days. Both last shipped on October 31, 2026.

Scorecard1 real difference · 9 level
Bloom Pregnancy App versus Tether: the parameters behind the verdict, then further details
ParameterBloom Pregnancy AppTether
PriceFreeFree
Rating—5.0 (4 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—4 — better
Update frequencyEvery 5 daysEvery 3 days — better
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhoneiPhone, Apple Watch — better
Requires iOS18.018.0
Further details — not scored
Size25 MB44 MB
Age rating4+17+
DeveloperLINE BUSINESS DIGITAL S.A.S.James Zamora

In-app purchases

1 purchases

Bloom Pregnancy App

One-time1
  • Lifetime Full Access$29.99
None

Tether

No in-app purchases

Questions

Is Bloom Pregnancy App free?
Bloom Pregnancy App is free to download, with in-app purchases available.
Is Tether free?
Tether is free to download, with no in-app purchases.
Do Bloom Pregnancy App or Tether have ads?
Neither Bloom Pregnancy App nor Tether shows ads.
Which is updated more often, Bloom Pregnancy App or Tether?
Bloom Pregnancy App ships an update every 5 days, and Tether every 3 days. Most recently, Bloom Pregnancy App was updated on October 31, 2026 and Tether on October 31, 2026.

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