Comparison

TimeSpanCalc vs OneFocus

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

Head to head
About

TimeSpanCalc

Calculate time durations between dates or specific hours. This tool helps determine the span of time by inputting start and end dates or hours. It's optimized for multitasking on iPads.

Highlights
  • Calculate start date
  • Calculate end date
  • Calculate hours
  • Calculate days
  • iPad multitasking support
Features
Read full description

Simple calculator for "Time Span". This can calculate an start date, an end date, and hours or days by turns. (Requires iOS 8 or later) Adapted for iPad multitasking (Slide Over, Split View) .

About

OneFocus

Features
Read full description

OneFocus turns a focus plan into one clear session across iPhone, iPad, and Mac. Choose a Focus Profile, set a duration, and see whether each device is protectedβ€”without a vague all-green status hiding a problem. FOCUS YOUR WAY β€’ Start 25, 50, or 90-minute sessions, or choose a custom duration. β€’ Build Profiles for Deep Work, Study, Reading, and your own routines. β€’ Block selected apps and websites on iPhone and iPad with Apple's Screen Time controls. β€’ Use the free Mac companion to protect supported apps and websites. β€’ Keep a session going with local rain, cafΓ©, train, forest, wave, and other procedural sounds. ONE SESSION, HONEST STATUS Private iCloud sync carries your active session, Profiles, schedules, history, and verified Pro status between devices. OneFocus shows iPhone Protected, Mac Protected, Waiting, Needs Permission, or Offline separately, so you know what is actually happening. Existing local sessions and history remain useful offline. HISTORY THAT EXPLAINS YOUR TIME Review Today, 7 Days, Month, and All Time. See pause-aware totals, streaks, Profile distribution, a calendar heatmap, Focus Constellation, and per-device protection intervals. Session details preserve the Profile used at the time, even if you later rename it. APPLE WORKFLOWS Use App Shortcuts for quick 25 or 50-minute starts, open History, and coordinate OneFocus with an Apple Focus through a guided Shortcut. Core actions support VoiceOver, larger text, reduced motion, and keyboard navigation. FREE AND PRO The free version includes manual sessions, one custom Profile, four sounds, a daily goal, basic iPhone/Mac connection, Flexible mode, and recent history. A single US$9.99 Pro Lifetime purchase unlocks unlimited Profiles, repeating schedules, full history, all sounds, skies, and themes, Committed mode, advanced Shortcuts, and data export. Restore purchases at any time. PRIVATE BY DESIGN No OneFocus account. No ads. No third-party tracking. Browser content and Screen Time selections are not uploaded. Sync uses your private iCloud database, and sounds are generated locally. Terms of Use: https://oneapps.studio/terms

Screenshots

TimeSpanCalc4 screens
OneFocus4 screens

Verdict

The call

The clearest difference is in-app purchases: TimeSpanCalc at none against OneFocus's 1. TimeSpanCalc also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (12.0 vs 17.0). On price, ads and device support 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. OneFocus sells 1 one-off in-app purchase. TimeSpanCalc asks for nothing beyond the download.

UpkeepUpdate frequency

TimeSpanCalc ships an update every 3 weeks, OneFocus every 2 months. The most recent releases landed on November 1, 2026 and November 8, 2026 respectively.

Scorecard3 real differences Β· 5 level
TimeSpanCalc versus OneFocus: the parameters behind the verdict, then further details
ParameterTimeSpanCalcOneFocus
PriceFreeFree
Positive reviews100.0% of reviewsβ€”
Update frequencyEvery 3 weeks β€” betterEvery 2 months
AdsNoNo
In-app purchasesNo β€” betterYes
MonetizationPaidβ€”
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS12.0 β€” better17.0
Further details β€” not scored
Size1 MB33 MB
Age rating4+4+
DeveloperMasahiko NogamiFreedom Dimension (shenzhen) Technology Co., Ltd

In-app purchases

None

TimeSpanCalc

No in-app purchases

1 purchases

OneFocus

One-time1
  • OneFocus Pro Lifetime$9.99

Questions

Is TimeSpanCalc free?
TimeSpanCalc is free to download, with no in-app purchases.
Is OneFocus free?
OneFocus is free to download, with in-app purchases available.
Do TimeSpanCalc or OneFocus have ads?
Neither TimeSpanCalc nor OneFocus shows ads.
Which is updated more often, TimeSpanCalc or OneFocus?
TimeSpanCalc ships an update every 3 weeks, and OneFocus every 2 months. Most recently, TimeSpanCalc was updated on November 1, 2026 and OneFocus on November 8, 2026.

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