Comparison

StaySync vs GuestDiary

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

Head to head
About

StaySync

Features
Read full description

Simplify hotel management and focus on what truly matters: your guests. StaySync is an intuitive, simple, and powerful reservation management app designed specifically for small hotels, inns, B&Bs, and vacation rental owners. Try all features with a 1-month free trial. Say goodbye to complex spreadsheets and costly systems. With StaySync, you can free yourself from tedious administrative tasks and dedicate more time to providing exceptional hospitality. β–Ό Is This You? Struggling with paper ledgers or messy spreadsheets? Need to check booking status on the go? Finding it hard to share updated information with your team? Overwhelmed by expensive, feature-heavy PMS (Property Management Systems)? Looking for an easy-to-use app that requires no technical skills? StaySync is the solution you've been searching for. 【Key Features】 Intuitive Calendar-Based UI Our clean calendar view gives you an at-a-glance overview of all your bookings. Easily check availability and prevent double bookings. Real-Time iCloud Sync Keep your reservations synchronized across all your devices (iPhone, iPad) using iCloud. Your data is always up-to-date, whether you're at the front desk or out and about. Effortless Booking Management Add new reservations in just a few taps. The streamlined process allows you to manage guest information and bookings without hassle. Designed for Simplicity We've focused on the essential features you need, eliminating the bloat. StaySync is incredibly easy to use, with no training required. 【Free Trial & Subscription】 You can try all of StaySync's features for free for one month. We want you to have plenty of time to see how it fits your property's needs. To continue using all features after the free trial period ends, a subscription to a paid plan is required. 【Perfect For】 Owners and managers of small hotels, pensions, inns, and B&Bs. Vacation rental hosts (e.g., Airbnb). Anyone managing guest properties. Download StaySync today and start managing your property the smart and simple way. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sites.google.com/view/stay-sync/privacy-policy

About

GuestDiary

Read full description

Manage your GuestDiary property anytime, anywhere. The GuestDiary mobile app puts everything you need to run your hotel or guesthouse right in your pocket: β€’ Check arrivals and departures with full guest details at a glance β€’ Manage reservations using an intuitive, calendar-style diary β€’ Instantly update room rates, availability, and restrictions β€’ Communicate directly with guests via the inbox β€’ Stay informed with push notifications for new, modified, or cancelled reservations, and new messages And much more! Simplify your daily operations and stay in control of your property β€” all from one powerful app.

Screenshots

StaySync3 screens
GuestDiary4 screens

Verdict

The call

The clearest difference is in-app purchases: GuestDiary at none against StaySync's 2. StaySync's advantage is update cadence (every 2 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. StaySync sells 2 in-app purchases, starting at $2.99 per month. GuestDiary asks for nothing beyond the download.

UpkeepUpdate frequency

StaySync ships an update every 2 weeks, GuestDiary every 2 months. The most recent releases landed on September 9, 2026 and September 20, 2026 respectively.

Scorecard2 real differences Β· 4 level
StaySync versus GuestDiary: the parameters behind the verdict, then further details
ParameterStaySyncGuestDiary
PriceFreeFree
Update frequencyEvery 2 weeks β€” betterEvery 2 months
AdsNoNo
In-app purchasesYesNo β€” better
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.416.4
Further details β€” not scored
Size2 MB61 MB
Age rating4+4+
DeveloperYasunori TanakaAccuBook Ltd

In-app purchases

2 purchases

StaySync

Subscriptions2
  • 1-Month Plan1 Month trial$2.991 Month
  • 1-Year Plan1 Month trial$29.991 Year
None

GuestDiary

No in-app purchases

Questions

Is StaySync free?
StaySync is free to download, with in-app purchases available.
Is GuestDiary free?
GuestDiary is free to download, with no in-app purchases.
Do StaySync or GuestDiary have ads?
Neither StaySync nor GuestDiary shows ads.
Which is updated more often, StaySync or GuestDiary?
StaySync ships an update every 2 weeks, and GuestDiary every 2 months. Most recently, StaySync was updated on September 9, 2026 and GuestDiary on September 20, 2026.

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