Comparison

Contract Countdown vs Studio One Hundred

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

Head to head
About

Contract Countdown

Track your progress through sea contracts with detailed calculations. Log past contracts to see total days onboard and completed contracts. Calculate days within specific tax years and share your progress.

Highlights
  • Calculate contract days
  • Track total days onboard
  • View days remaining
  • See percentage complete
  • Count completed contracts
  • Calculate tax year days
  • Share progress via screenshot
Features
Read full description

Contract Countdown counts down the days of your contract at sea, from joining day to sign-off. Your contracts, safe in iCloud Everything you add is backed up to your own iCloud account. Change phone, reinstall the app or add an iPad, and your contracts come straight back. When you update from an earlier version, your existing contracts are moved across automatically. The gauge you know • The original 0–100 gauge, with a white needle for days completed and a red needle for days remaining • The red zone for the last stretch of your contract, set as a percentage or a number of days • Days completed, total days and days remaining, counting both joining day and sign-off day Your career at sea • Every contract in one history, grouped by year and searchable by ship, cruise line or position • Add your position to each contract and see your career progress • Career stats: days at sea each year, a career timeline, the ships and cruise lines you've worked on, your longest contract and your average time home • Lifetime days at sea across all your contracts Tax days Set the start of your tax year and see how many days you've spent at sea so far, plus the days already scheduled. Browse earlier and later years. A guide to help with your records. On your Home Screen, Lock Screen and wrist • Widgets for the Home Screen and Lock Screen • An Apple Watch app with complications • Ask Siri: "How many days left in Contract Countdown?" Made for crew • Reminders at halfway, when the red zone starts, with 7 days to go, the day before sign-off and the day before joining • Add joining and sign-off days to your calendar • A badge for each cruise line, or add your own logo from Photos • Share a countdown card with friends and family • Export a backup file whenever you like • For iPhone and iPad, in English, Spanish, Portuguese, Filipino, Indonesian and Hindi Private by design No account, no ads, no tracking. Your contracts stay on your devices and in your own iCloud. We never see them.

About

Studio One Hundred

Features
Read full description

The official Studio One Hundred app. Download to make appointments and turn on notifications to get all of our latest updates. Based in Rhoose, Vale of Glamorgan. Key features include:⁣ - Book with us directly⁣ - Receive all of our latest notifications⁣ - View staff and service details⁣ - View all of our latest gallery posts⁣ ⁣ Welcome to Studio One Hundred! Download the app today.

Screenshots

Contract Countdown4 screens
Studio One Hundred4 screens

Verdict

The call

The clearest difference is price: Studio One Hundred at Free against Contract Countdown's $0.99. Studio One Hundred also leads on iOS requirement (15.1 vs 17.0). On update cadence, 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

Studio One Hundred is free to download; Contract Countdown costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Contract Countdown ships an update every 7 months, Studio One Hundred every 9 months. The most recent releases landed on November 1, 2026 and October 28, 2026 respectively.

Scorecard2 real differences · 8 level
Contract Countdown versus Studio One Hundred: the parameters behind the verdict, then further details
ParameterContract CountdownStudio One Hundred
Price$0.99Free — better
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 7 months — betterEvery 9 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPod
Requires iOS17.015.1 — better
Further details — not scored
Size15 MB79 MB
Age rating4+4+
DeveloperJohn PhillipsStyler Digital Limited

In-app purchases

None

Contract Countdown

No in-app purchases

None

Studio One Hundred

No in-app purchases

Questions

Is Contract Countdown free?
Contract Countdown costs $0.99, with no in-app purchases.
Is Studio One Hundred free?
Studio One Hundred is free to download, with no in-app purchases.
Do Contract Countdown or Studio One Hundred have ads?
Neither Contract Countdown nor Studio One Hundred shows ads.
Which is updated more often, Contract Countdown or Studio One Hundred?
Contract Countdown ships an update every 7 months, and Studio One Hundred every 9 months. Most recently, Contract Countdown was updated on November 1, 2026 and Studio One Hundred on October 28, 2026.

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