Comparison

Aerth Saunas vs Flow Glow

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

Head to head
About

Aerth Saunas

Features
Read full description

Features: -Purchase Class Packs and Memberships Easily browse and purchase our class packs or membership options -View our schedule Filter classes by type to find the perfect fit for your routine. -Manage your reservations Book your class reservations with ease. Keep track of your upcoming classes and manage your schedule to stay organized and committed to your fitness goals.

About

Flow Glow

This app syncs your skincare routine with your menstrual cycle, offering personalized advice based on hormonal changes. It tracks your skin's needs through five distinct phases, providing science-backed routines and product recommendations.

Highlights
  • Phase-synced skincare routines
  • Product shelf with safety ratings
  • Skin phase guidance and science
  • Daily skin logging and insights
  • Before and after photo comparisons
  • Clinic treatment timing guide
  • Ingredient conflict checker
  • Phase-specific food recommendations
Features
Read full description

Your skin has a rhythm. Most skincare routines ignore it. Estrogen, progesterone and testosterone each shape your skin differently across your cycle. Flow Glow tracks where you are and builds your daily routine around it, so you always know exactly what your skin needs, and why. Whether you're dealing with hormonal acne before your period, sensitivity during your bleed, or that natural glow in your follicular phase, Flow Glow gives you a science-backed routine for every phase of your cycle. FIVE PHASES. FIVE DIFFERENT SKIN STORIES. Bleed: Repair and restore. Barrier-first, gentle everything. Follicular: Your golden window. Retinol, actives, collagen. Ovulatory: Peak radiance. Protect and maintain your glow. Early Luteal: Balance sebum. Support your shifting skin. Late Luteal: Calm inflammation. Soothe and protect. WHAT'S INSIDE: Phase-synced routines Morning and evening routines that adapt to your cycle every day. Built around your shelf, your skin type and your phase. Product shelf Add your products and see phase safety ratings for every item in your cabinet. Know what to use, what to rest and what to avoid, and when. Skin phase guidance Deep science behind all 5 phases. Know what your hormones are doing and exactly how your skin responds. Daily skin log Track clarity, hydration, oiliness, sensitivity and glow every day. Watch personalized insights build over time as you spot your patterns. Before and after photos A photo log tied to your cycle day and phase. Compare your bleed-phase skin to your ovulatory glow and watch the difference hormones make. Clinic treatment guide When to book microneedling, laser, injectables and peels. Timing treatments to your cycle doubles results and halves recovery. Ingredient conflict checker Know what to layer and what to keep apart. Retinol, acids, vitamin C, niacinamide and more, 29 conflict pairs checked. Eat for your skin Phase-specific food recommendations. What you eat directly affects your skin. Flow Glow connects the two. 14 science deep dives Hormones and skin, hyperpigmentation, microbiome, retinol, SPF, collagen and more, all explained through a cycle lens. START FREE: Try Flow Glow free for 7 days with annual plan. Full access. After your trial, you will be charged $39.99 unless cancelled before the trial ends. Monthly plan available at $7.99 per month, billed immediately. Cancel anytime in App Store settings. For wellness purposes only. Not medical advice. Terms of Use: https://flowglow.me/terms-of-service

Screenshots

Aerth Saunas4 screens
Flow Glow4 screens

Verdict

The call

The clearest difference is in-app purchases: Aerth Saunas at none against Flow Glow's 2. Flow Glow's advantage is update cadence (every 6 days vs every 2 weeks) and device support (3 vs 1). On price and ads 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. Flow Glow sells 2 in-app purchases, starting at $7.99 per month. Aerth Saunas asks for nothing beyond the download.

UpkeepUpdate frequency

Aerth Saunas ships an update every 2 weeks, Flow Glow every 6 days. The most recent releases landed on October 21, 2026 and October 14, 2026 respectively.

Scorecard4 real differences · 6 level
Aerth Saunas versus Flow Glow: the parameters behind the verdict, then further details
ParameterAerth SaunasFlow Glow
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 2 weeksEvery 6 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.013.0 — better
Further details — not scored
Size38 MB16 MB
Age rating4+12+
DeveloperAERTH SAUNA CORP.Kristina Kozicynaite

In-app purchases

None

Aerth Saunas

No in-app purchases

2 purchases

Flow Glow

Subscriptions2
  • Monthly$7.991 Month
  • Annual7 Days trial$39.991 Year

Questions

Is Aerth Saunas free?
Aerth Saunas is free to download, with no in-app purchases.
Is Flow Glow free?
Flow Glow is free to download, with in-app purchases available.
Do Aerth Saunas or Flow Glow have ads?
Neither Aerth Saunas nor Flow Glow shows ads.
Which is updated more often, Aerth Saunas or Flow Glow?
Aerth Saunas ships an update every 2 weeks, and Flow Glow every 6 days. Most recently, Aerth Saunas was updated on October 21, 2026 and Flow Glow on October 14, 2026.

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