Comparison

IOJ vs SweetCase

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

Head to head
About

IOJ

Discover unique walking tours and travel services across Japan, guided by local experts. Book experiences seamlessly and explore hidden gems in cities like Tokyo, Kyoto, and Osaka.

Highlights
  • Explore Japan's main cities
  • Walking tours and travel services
  • Engage with local Travel Story Tellers
  • Seamless booking and secure payments
  • Instant booking confirmations
  • Discover hidden gems
Features
Read full description

Discover Unforgettable Experiences: Inside Out Japan is your gateway to uncovering hidden gems and must-visit destinations across Japan. Whether you're exploring Tokyo, Kyoto or Osaka and surroundings, our app provides a comprehensive selection of unique walking tours and travel services that cater to all interests. Expert Guidance: With Inside Out Japan, you'll never miss out on the best experiences Japan has to offer. Our team of knowledgeable and passionate Travel Story Teller are here to assist you every step of the way. From historical landmarks to vibrant neighborhoods, they'll help you navigate the intricate tapestry of Japanese culture, ensuring an authentic and unforgettable adventure. Seamless Booking: Booking your dream experience has never been easier. Inside Out Japan offers a user-friendly interface that allows you to browse, select, and book your preferred walking tours or our 24-hour chat service. Securely make payments via credit card, and receive instant confirmations for a hassle-free planning process. Highlights: - Explore the main cities of Japan with a wide range of walking tours and travel services. - Engage with professional local Travel Story Teller who share their knowledge and passion. - Effortlessly book your preferred experiences and pay securely via credit card. - Receive instant confirmations for seamless planning and peace of mind. - Discover hidden gems and tailor your journey to suit your interests. Download Inside Out Japan now and embark on a once-in-a-lifetime adventure through the vibrant landscapes and captivating culture of Japan. Unforgettable memories await! Privacy policy https://www.insideoutjapan.com/doc/privacy-policy Terms and conditions https://www.insideoutjapan.com/terms-of-service

About

SweetCase

Read full description

Your daily dose of travel. Before a trip we read everything: we ask AI, we watch videos, we save lists of things to see. A week later? We remember almost nothing. Knowing a place is something else. It's knowing what to order and why, the story behind the square everyone photographs, the neighbourhood where locals go and tourists don't. It's something you build a little at a time, and it stays with you. That's where SweetCase comes in. Play a few minutes a day and the world stops being a list of sights: it becomes places you actually know. Learn it on the couch. Live it on the road. CITIES AND COUNTRIES • Pick a city or a country and travel through its chapters, from "Arrival & Orientation" to "Becoming a Local" • Beat the boss waiting at the end of every chapter and win its medal, from wood all the way to diamond • Stamp your passport as you go and watch your world fill up HOW YOU PLAY • Over 20 kinds of mini-game: find places on a real map, match festivals to their season, spot the real local, solve a crossword, bust myths in Urban Legends, and many more • Keep your daily streak alive: Sweet can remind you before your flame goes out • Challenge a friend face to face on the same phone, or train against one of the travel buddies, in a Knowledge Battle YOUR TRAVEL BUDDIES • 10 companions to travel with, starting with Sweet, the talking suitcase • Earn miles as you travel and spend them in the dressing room: hats, glasses, auras and onesies, from common to legendary THE DUTY FREE • Before you leave, open a travel guide: Barcelona, Paris, London and Milan, each with the essentials, what to see and eat, when to go, a phrasebook and how to live like a local WHY YOU CAN TRUST IT • Thousands of questions, each one checked against a public source and dated: no invented trivia • Climb the leaderboard and see how you rank worldwide and in your own country • Fully available in English, Italiano and Español • Sign in with Apple, Google or email: your passport is backed up and follows you to a new phone • Play offline anywhere; your progress syncs when you're back online • No ads, no third-party tracking Planning a trip, testing how well you really know your own city, or just curious about the world? Pack light, collect cities. SweetCase. Become a true traveler.

Screenshots

IOJ4 screens
SweetCase4 screens

Verdict

The call

The clearest difference is update cadence: SweetCase at every 5 days against IOJ's fortnightly. 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

IOJ ships an update fortnightly, SweetCase every 5 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard1 real difference · 8 level
IOJ versus SweetCase: the parameters behind the verdict, then further details
ParameterIOJSweetCase
PriceFreeFree
Rating4.8 (4 ratings) — better—
Number of ratings4 — better—
Update frequencyFortnightlyEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size71 MB221 MB
Age rating4+12+
DeveloperMTJ Co.,LtdALBERTO LOFFREDO

In-app purchases

None

IOJ

No in-app purchases

None

SweetCase

No in-app purchases

Questions

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

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