Tonic Day Spa vs Sellier
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tonic Day Spa
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Based in Heath Hayes Cannock, Tonic Day Spa has been established for over 20 years and we offer a unique, friendly and high quality health spa experience on your local high street. Offering treatments to men and women of all ages our skilled and highly trained therapists offer a wide range of treatments using the only the best products. Our app allows you to book treatment, browse and purchase a range of beauty products and keep up to date with our latest news and offers.
Sellier
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Sellier brings the world of pre-loved luxury to your fingertips. Based in the heart of Knightsbridge & Monaco, we curate an exceptional edit of authenticated handbags, ready-to-wear, shoes and accessories from the world's most coveted houses — Hermès, Chanel, Dior, Louis Vuitton, Prada, Saint Laurent and beyond. WHY SELLIER • Expertly Authenticated — Every piece is rigorously inspected and authenticated by our in-house specialists before it reaches you. • Knightsbridge Curated — Our buyers travel the world to source rare, archival and current-season pieces you won't find anywhere else. • Personal Shopping — Work one-on-one with our personal shoppers who create bespoke edits tailored to your taste and wardrobe. • Secure & Seamless — Sign in with Apple or Google, shop securely, and check out in seconds. WHAT YOU CAN DO — Browse the full Sellier collection, updated daily with new arrivals — Shop by category: Bags, Clothing, Shoes and Accessories — Filter by designer, size, colour and price to find exactly what you're looking for — Save favourites to your Wishlist and revisit anytime — Receive personal edits curated just for you by our shoppers, delivered straight to your inbox — Get notified the moment new pieces drop or your wishlisted items are restocked — Secure checkout with all major payment methods THE SELLIER PROMISE Every item is guaranteed authentic. We stand behind every piece we sell with our authentication guarantee and a transparent returns policy. From the iconic to the irreplaceable, Sellier is your trusted destination for luxury, reimagined. Visit us in Knightsbridge or shop the app — wherever you are, the world's most beautiful pieces are just a tap away. Follow us @sellierknightsbridge Questions? Email shop@sellierknightsbridge.com
Screenshots
Verdict
The clearest difference is update cadence: Sellier at daily against Tonic Day Spa's every 6 weeks. Tonic Day Spa's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Tonic Day Spa ships an update every 6 weeks, Sellier daily. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.
| Parameter | Tonic Day Spa | Sellier |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 weeks | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 165 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | TEKNET CONSULTANTS LTD | Sellier Ltd |
In-app purchases
Tonic Day Spa
No in-app purchases
Sellier
No in-app purchases
